Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains found in AMP-activated protein kinase gamma-like proteins, repeat 1; AMP-activated protein kinase (AMPK) plays multiple roles in the body's overall metabolic balance and response to exercise, nutritional stress, hormonal stimulation, and the glucose-lowering drugs metformin and rosiglitazone. AMPK consists of a catalytic alpha subunit and two non-catalytic subunits, beta and gamma, each with multiple isoforms that form active 1:1:1 heterotrimers. This cd contains 2 tandem repeats of the CBS domains found in the gamma subunits of AMPK. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 115 KCYDIVPTSSKLVVFDTTLQVKKAFFALVANGVRAAPLWESKKQSFVGMLTITDFINILHRYYKSPMVQIYELEEHKIET 194
Cdd:cd04618     1 TCYDLLPTSSKLVVLDTKLPVKKAFFALVQNGIRSAPLWDSEKQDFVGMLTITDFINILQYYYKSPSVQMEELEEHTIET 80

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1958770485 195 WRELYLQETFKPLVNISPDASLFDAVYSLIKNKIHRLPVIDPISGNALYILTHKRILK 252
Cdd:cd04618    81 WREIERQIGVPPLVSVHPEDSLYDAALLLLQNKIHRLPVIDPLTGNVLSVLTHKRILK 138

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains found in AMP-activated protein kinase gamma-like proteins, repeat 1; AMP-activated protein kinase (AMPK) plays multiple roles in the body's overall metabolic balance and response to exercise, nutritional stress, hormonal stimulation, and the glucose-lowering drugs metformin and rosiglitazone. AMPK consists of a catalytic alpha subunit and two non-catalytic subunits, beta and gamma, each with multiple isoforms that form active 1:1:1 heterotrimers. This cd contains 2 tandem repeats of the CBS domains found in the gamma subunits of AMPK. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 115 KCYDIVPTSSKLVVFDTTLQVKKAFFALVANGVRAAPLWESKKQSFVGMLTITDFINILHRYYKSPMVQIYELEEHKIET 194
Cdd:cd04618     1 TCYDLLPTSSKLVVLDTKLPVKKAFFALVQNGIRSAPLWDSEKQDFVGMLTITDFINILQYYYKSPSVQMEELEEHTIET 80

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1958770485 195 WRELYLQETFKPLVNISPDASLFDAVYSLIKNKIHRLPVIDPISGNALYILTHKRILK 252
Cdd:cd04618    81 WREIERQIGVPPLVSVHPEDSLYDAALLLLQNKIHRLPVIDPLTGNVLSVLTHKRILK 138

CBS-domain-containing membrane protein [Signal transduction mechanisms];

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 205 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALY-ILTHKRILKFLQLFMSDMPKPAFMKQNLDELgigTYHNIA 283
Cdd:COG3448    10 RDVVTVSPDTTLREALELMREHGIRGLPVVD--EDGRLVgIVTERDLLRALLPDRLDELEERLLDLPVEDV---MTRPVV 84

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*..
gi 1958770485 284 FIHPNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAE 330
Cdd:COG3448    85 TVTPDTPLEEAAELMLEHGIHRLPVVDDDGRLVGIVTRTDLLRALAR 131

Domain in cystathionine beta-synthase and other proteins; Domain present in all 3 forms of cellular life. Present in two copies in inosine monophosphate dehydrogenase, of which one is disordered in the crystal structure. A number of disease states are associated with CBS-containing proteins including homocystinuria, Becker's and Thomsen disease.

                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*
gi 1958770485  285 IHPNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAA 329
Cdd:smart00116   5 VSPDTTLEEALELLRENGIRRLPVVDEEGRLVGIVTRRDIIKALA 49

Domain in cystathionine beta-synthase and other proteins; Domain present in all 3 forms of cellular life. Present in two copies in inosine monophosphate dehydrogenase, of which one is disordered in the crystal structure. A number of disease states are associated with CBS-containing proteins including homocystinuria, Becker's and Thomsen disease.

                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|
gi 1958770485  206 PLVNISPDASLFDAVYSLIKNKIHRLPVIDPiSGNALYILTHKRILKFLQ 255
Cdd:smart00116   1 DVVTVSPDTTLEEALELLRENGIRRLPVVDE-EGRLVGIVTRRDIIKALA 49

putative manganese-dependent inorganic diphosphatase;

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|...
gi 1958770485 281 NIAFIHPNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFD 323
Cdd:PRK14869   77 KPVTVSPDTSLKEAWNLMDENNVKTLPVVDEEGKLLGLVSLSD 119

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains found in AMP-activated protein kinase gamma-like proteins, repeat 1; AMP-activated protein kinase (AMPK) plays multiple roles in the body's overall metabolic balance and response to exercise, nutritional stress, hormonal stimulation, and the glucose-lowering drugs metformin and rosiglitazone. AMPK consists of a catalytic alpha subunit and two non-catalytic subunits, beta and gamma, each with multiple isoforms that form active 1:1:1 heterotrimers. This cd contains 2 tandem repeats of the CBS domains found in the gamma subunits of AMPK. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 115 KCYDIVPTSSKLVVFDTTLQVKKAFFALVANGVRAAPLWESKKQSFVGMLTITDFINILHRYYKSPMVQIYELEEHKIET 194
Cdd:cd04618     1 TCYDLLPTSSKLVVLDTKLPVKKAFFALVQNGIRSAPLWDSEKQDFVGMLTITDFINILQYYYKSPSVQMEELEEHTIET 80

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1958770485 195 WRELYLQETFKPLVNISPDASLFDAVYSLIKNKIHRLPVIDPISGNALYILTHKRILK 252
Cdd:cd04618    81 WREIERQIGVPPLVSVHPEDSLYDAALLLLQNKIHRLPVIDPLTGNVLSVLTHKRILK 138

CBS-domain-containing membrane protein [Signal transduction mechanisms];

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 205 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALY-ILTHKRILKFLQLFMSDMPKPAFMKQNLDELgigTYHNIA 283
Cdd:COG3448    10 RDVVTVSPDTTLREALELMREHGIRGLPVVD--EDGRLVgIVTERDLLRALLPDRLDELEERLLDLPVEDV---MTRPVV 84

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*..
gi 1958770485 284 FIHPNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAE 330
Cdd:COG3448    85 TVTPDTPLEEAAELMLEHGIHRLPVVDDDGRLVGIVTRTDLLRALAR 131

Predicted transcriptional regulator, contains C-terminal CBS domains [Transcription];

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 205 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALYILTHKRILKFLQLFMSDMPKPA--FMKQNLdelgigtyhni 282
Cdd:COG2524    94 KDVITVSPDTTLEEALELMLEKGISGLPVVD--DGKLVGIITERDLLKALAEGRDLLDAPVsdIMTRDV----------- 160

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....
gi 1958770485 283 AFIHPNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVIN 326
Cdd:COG2524   161 VTVSEDDSLEEALRLMLEHGIGRLPVVDDDGKLVGIITRTDILR 204

CBS domain [Signal transduction mechanisms];

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 205 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALY-ILTHKRILKFLqlfmsdmpkpAFMKQNLDELGIGTY--HN 281
Cdd:COG0517     9 TDVVTVSPDATVREALELMSEKRIGGLPVVD--EDGKLVgIVTDRDLRRAL----------AAEGKDLLDTPVSEVmtRP 76

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*....
gi 1958770485 282 IAFIHPNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAE 330
Cdd:COG0517    77 PVTVSPDTSLEEAAELMEEHKIRRLPVVDDDGRLVGIITIKDLLKALLE 125

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains found in archaea and associated with helix turn helix domain; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains in the inosine 5' monophosphate dehydrogenase (IMPDH) protein. IMPDH is an essential enzyme that catalyzes the first step unique to GTP synthesis, playing a key role in the regulation of cell proliferation and differentiation. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 205 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALYILTHKRILKFLQLFMSDMPKPAFMKQNldelgigtyhnIAF 284
Cdd:cd04588     2 KDLITLKPDATIKDAAKLLSENNIHGAPVVD--DGKLVGIVTLTDIAKALAEGKENAKVKDIMTKD-----------VIT 68

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|...
gi 1958770485 285 IHPNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINL 327
Cdd:cd04588    69 IDKDEKIYDAIRLMNKHNIGRLIVVDDNGKPVGIITRTDILKV 111

signal transduction protein with CBS domains; Archeal gamma-subunit of 5'-AMP-activated protein kinase (AMPK) contains four CBS domains in tandem repeats, similar to eukaryotic homologs. AMPK is an important regulator of metabolism and of energy homeostasis. It is a heterotrimeric protein composed of a catalytic serine/threonine kinase subunit (alpha) and two regulatory subunits (beta and gamma). The gamma subunit senses the intracellular energy status by competitively binding AMP and ATP and is believed to be responsible for allosteric regulation of the whole complex. In humans mutations in gamma- subunit of AMPK are associated with hypertrophic cardiomiopathy, Wolff-Parkinson-White syndrome and glycogen storage in the skeletal muscle. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 205 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDPISGNALYILTHKRILKFL-----QLFMSDMPKPAFMK---QNLDElgI 276
Cdd:cd17779     8 KDVITIPPTTTIIGAIKTMTEKGFRRLPVADAGTKRLEGIVTSMDIVDFLgggskYNLVEKKHNGNLLAainEPVRE--I 85

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*....
gi 1958770485 277 GTyHNIAFIHPNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVI 325
Cdd:cd17779    86 MT-RDVISVKENASIDDAIELMLEKNVGGLPIVDKDGKVIGIVTERDFL 133

Domain in cystathionine beta-synthase and other proteins; Domain present in all 3 forms of cellular life. Present in two copies in inosine monophosphate dehydrogenase, of which one is disordered in the crystal structure. A number of disease states are associated with CBS-containing proteins including homocystinuria, Becker's and Thomsen disease.

                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*
gi 1958770485  285 IHPNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAA 329
Cdd:smart00116   5 VSPDTTLEEALELLRENGIRRLPVVDEEGRLVGIVTRRDIIKALA 49

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains present in bacteria; The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 280 HNIAFIHPNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAEKTYNNLD-ITVtqalqhrSQYFEGVVKCS 358
Cdd:cd04629     3 RNPVTLTPDTSILEAVELLLEHKISGAPVVDEQGRLVGFLSEQDCLKALLEASYHCEPgGTV-------ADYMSTEVLTV 75

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*
gi 1958770485 359 KLETleTIVDrivRAEVRDRSPPHIFPrvcwahtqqVV--GRLLG 401
Cdd:cd04629    76 SPDT--SIVD---LAQLFLKNKPRRYP---------VVedGKLVG 106

CBS domain; CBS domains are small intracellular modules that pair together to form a stable globular domain. This family represents a single CBS domain. Pairs of these domains have been termed a Bateman domain. CBS domains have been shown to bind ligands with an adenosyl group such as AMP, ATP and S-AdoMet. CBS domains are found attached to a wide range of other protein domains suggesting that CBS domains may play a regulatory role making proteins sensitive to adenosyl carrying ligands. The region containing the CBS domains in Cystathionine-beta synthase is involved in regulation by S-AdoMet. CBS domain pairs from AMPK bind AMP or ATP. The CBS domains from IMPDH and the chloride channel CLC2 bind ATP.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1958770485 280 HNIAFIHPNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAE 330
Cdd:pfam00571   7 KDVVTVSPDTTLEEALELMREHGISRLPVVDEDGKLVGIVTLKDLLRALLG 57

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the BON (bacterial OsmY and nodulation domain) domain; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the BON (bacterial OsmY and nodulation domain) domain. BON is a putative phospholipid-binding domain found in a family of osmotic shock protection proteins. It is also found in some secretins and a group of potential haemolysins. Its likely function is attachment to phospholipid membranes. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|.
gi 1958770485 285 IHPNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVI 325
Cdd:cd04586     8 VTPDTSVREAARLLLEHRISGLPVVDDDGKLVGIVSEGDLL 48

CBS pair domains found in archeal 5'-AMP-activated protein kinase gamma subunit-like proteins; Archeal gamma-subunit of 5'-AMP-activated protein kinase (AMPK) contains four CBS domains in tandem repeats, similar to eukaryotic homologs. AMPK is an important regulator of metabolism and of energy homeostasis. It is a heterotrimeric protein composed of a catalytic serine/threonine kinase subunit (alpha) and two regulatory subunits (beta and gamma). The gamma subunit senses the intracellular energy status by competitively binding AMP and ATP and is believed to be responsible for allosteric regulation of the whole complex. In humans mutations in gamma- subunit of AMPK are associated with hypertrophic cardiomiopathy, Wolff-Parkinson-White syndrome and glycogen storage in the skeletal muscle. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 208 VNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALYILTHKRILKFL---QLFMS----------DMPKPAFMKQNldel 274
Cdd:cd04631    11 ITATPGTPIEDVAKIMVRNGFRRLPVVS--DGKLVGIVTSTDIMRYLgsgEAFEKlktgnihevlNVPISSIMKRD---- 84

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1958770485 275 gigtyhnIAFIHPNTPIIKALNIFVERRISALPVVDEsGKVVDIYSKFDVIN 326
Cdd:cd04631    85 -------IITTTPDTDLGEAAELMLEKNIGALPVVDD-GKLVGIITERDILR 128

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the BON (bacterial OsmY and nodulation domain) domain; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the BON (bacterial OsmY and nodulation domain) domain. BON is a putative phospholipid-binding domain found in a family of osmotic shock protection proteins. It is also found in some secretins and a group of potential haemolysins. Its likely function is attachment to phospholipid membranes. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 205 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNAL-------------YILTHKRILKFLQLFMSDMPKPAfmKQNL 271
Cdd:cd04586     3 TDVVTVTPDTSVREAARLLLEHRISGLPVVD--DDGKLvgivsegdllrreEPGTEPRRVWWLDALLESPERLA--EEYV 78

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*....
gi 1958770485 272 DELG-----IGTyHNIAFIHPNTPIIKALNIFVERRISALPVVDEsGKVVDIYSKFDVI 325
Cdd:cd04586    79 KAHGrtvgdVMT-RPVVTVSPDTPLEEAARLMERHRIKRLPVVDD-GKLVGIVSRADLL 135

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains from plant CBSX proteins; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains of plant single cystathionine beta-synthase (CBS) pair proteins (CBSX). CBSX1 and CBSX2 have been identified as redox regulators of the thioredoxin (Trx) system. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|...
gi 1958770485 287 PNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAA 329
Cdd:cd17789    10 PNTTVDEALELLVENRITGLPVIDEDWRLVGVVSDYDLLALDS 52

Signal-transduction protein containing cAMP-binding, CBS, and nucleotidyltransferase domains [Signal transduction mechanisms];

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1958770485 280 HNIAFIHPNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINLAAEKTYNNLDITV 340
Cdd:COG2905     7 RDVVTVSPDATVREAARLMTEKGVGSLVVVDDDGRLVGIITDRDLRRRVLAEGLDPLDTPV 67

CBS pair domains found in archeal proteins, repeat 2; CBS pair domains found in archeal proteins that contain 2 repeats. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 205 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALYILTHKRILKFL--QLFMSDMPKP---AFMKQNLDELgigTY 279
Cdd:cd17778     8 TPVVTIYPDDTLKEAMELMVTRGFRRLPVVS--GGKLVGIVTAMDIVKYFgsHEAKKRLTTGdidEAYSTPVEEI---MS 82

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*.
gi 1958770485 280 HNIAFIHPNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVI 325
Cdd:cd17778    83 KEVVTIEPDADIAEAARLMIKKNVGSLLVVDDEGELKGIITERDVL 128

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the DHH and nucleotidyltransferase (NT) domains; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with an upstream DHH domain which performs a phosphoesterase function and a downstream nucleotidyltransferase (NT) domain of family X DNA polymerases. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 205 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDPISGNALYILTHKRILKFLQLFMSDMPKPAFMKQnldelgigtyhNIAF 284
Cdd:cd17772     2 SPVISVEPDTTIAEAAELMTRYNINALPVVDGGTGRLVGIITRQVAEKAIYHGLGDLPVSEYMTT-----------EFAT 70

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|...
gi 1958770485 285 IHPNTPIIKALNIFVERRISALPVVDEsGKVVDIYSKFDVINL 327
Cdd:cd17772    71 VTPDAPLSEIQEIIVEQRQRLVPVVED-GRLVGVITRTDLLNL 112

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with family II inorganic pyrophosphatase; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with a subgroup of family II inorganic pyrophosphatases (PPases) that also contain a DRTGG domain. The homolog from Clostridium has been shown to be inhibited by AMP and activated by a novel effector, diadenosine 5',5-P1,P4-tetraphosphate (AP(4)A), which has been shown to bind to the CBS domain. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 210 ISPDASLFDAVYSLIKNKIHRLPVIDPiSGNALYILTHKRILKFLQLFMS-DMPKPAFMKQNLDElgigtyhniafihpn 288
Cdd:cd04597    10 LSPETSIKDAWNLMDENNLKTLPVTDD-NGKLIGLLSISDIARTVDYIMTkDNLIVFKEDDYLDE--------------- 73

                          90       100       110
                  ....*....|....*....|....*....|....*...
gi 1958770485 289 tpiIKalNIFVERRISALPVVDESGKVVDIYSKFDVIN 326
Cdd:cd04597    74 ---VK--EIMLNTNFRNYPVVDENNKFLGTISRKHLIN 106

CBS domain; CBS domains are small intracellular modules that pair together to form a stable globular domain. This family represents a single CBS domain. Pairs of these domains have been termed a Bateman domain. CBS domains have been shown to bind ligands with an adenosyl group such as AMP, ATP and S-AdoMet. CBS domains are found attached to a wide range of other protein domains suggesting that CBS domains may play a regulatory role making proteins sensitive to adenosyl carrying ligands. The region containing the CBS domains in Cystathionine-beta synthase is involved in regulation by S-AdoMet. CBS domain pairs from AMPK bind AMP or ATP. The CBS domains from IMPDH and the chloride channel CLC2 bind ATP.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 1958770485 205 KPLVNISPDASLFDAVYSLIKNKIHRLPVIDPiSGNALYILTHKRILKFL 254
Cdd:pfam00571   7 KDVVTVSPDTTLEEALELMREHGISRLPVVDE-DGKLVGIVTLKDLLRAL 55

Predicted transcriptional regulator containing CBS domains [Transcription];

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 210 ISPDASLFDAVYSLIKNKIHRLPVIDPiSGNALYILTHKRILKFlqlfMSDMPKPAFMKqnldelgigtyHNIAFIHPNT 289
Cdd:COG4109    30 LSEDDTVEDALELLEKTGHSRFPVVDE-NGRLVGIVTSKDILGK----DDDTPIEDVMT-----------KNPITVTPDT 93

                          90       100       110
                  ....*....|....*....|....*....|....*..
gi 1958770485 290 PIIKALNIFVERRISALPVVDESGKVVDIYSKFDVIN 326
Cdd:COG4109    94 SLASAAHKMIWEGIELLPVVDDDGRLLGIISRQDVLK 130

Signal-transduction protein containing cAMP-binding, CBS, and nucleotidyltransferase domains [Signal transduction mechanisms];

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 130 DTTlqVKKAFFALVANGVRAAPLwESKKQSFVGMLTITDFINILHRYYKSPM-VQIYEleehkIETwrelylqetfKPLV 208
Cdd:COG2905    15 DAT--VREAARLMTEKGVGSLVV-VDDDGRLVGIITDRDLRRRVLAEGLDPLdTPVSE-----VMT----------RPPI 76

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*.
gi 1958770485 209 NISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALYILTHKRILKFL 254
Cdd:COG2905    77 TVSPDDSLAEALELMEEHRIRHLPVVD--DGKLVGIVSITDLLRAL 120

IMP dehydrogenase / GMP reductase domain; This family is involved in biosynthesis of guanosine nucleotide. Members of this family contain a TIM barrel structure. In the inosine monophosphate dehydrogenases 2 CBS domains pfam00571 are inserted in the TIM barrel. This family is a member of the common phosphate binding site TIM barrel family.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 208 VNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALYILThKRILKFLqlfmSDMPKP--AFMkqnldelgigTYHNIAFI 285
Cdd:pfam00478  91 VTLSPDATVADALALMERYGISGVPVVD--DGKLVGIVT-NRDLRFE----TDLSQPvsEVM----------TKENLVTA 153

                          90       100       110
                  ....*....|....*....|....*....|.
gi 1958770485 286 HPNTPIIKALNIFVERRISALPVVDESGKVV 316
Cdd:pfam00478 154 PEGTTLEEAKEILHKHKIEKLPVVDDNGRLV 184

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the with the SIS (Sugar ISomerase) domain; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the SIS (Sugar ISomerase) domain in the API [A5P (D-arabinose 5-phosphate) isomerase] protein KpsF/GutQ. These APIs catalyze the conversion of the pentose pathway intermediate D-ribulose 5-phosphate into A5P, a precursor of 3-deoxy-D-manno-octulosonate, which is an integral carbohydrate component of various glycolipids coating the surface of the outer membrane of Gram-negative bacteria, including lipopolysaccharide and many group 2 K-antigen capsules. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                          10        20        30
                  ....*....|....*....|....*....|..
gi 1958770485 285 IHPNTPIIKALNIFVERRISALPVVDESGKVV 316
Cdd:cd04604    83 ISPDALAAEALELMEEHKITVLPVVDEDGKPV 114

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains in the inosine 5' monophosphate dehydrogenase (IMPDH) protein; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains in the inosine 5' monophosphate dehydrogenase (IMPDH) protein. IMPDH is an essential enzyme that catalyzes the first step unique to GTP synthesis, playing a key role in the regulation of cell proliferation and differentiation. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 208 VNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALY-ILTHKRILkflqlFMSDMPKP--AFMKQNLDelgigtyhnIAF 284
Cdd:cd04601     5 VTLSPDATVADVLELKAEYGISGVPVTE--DGGKLVgIVTSRDIR-----FETDLSTPvsEVMTPDER---------LVT 68

                          90       100       110
                  ....*....|....*....|....*....|....
gi 1958770485 285 IHPNTPIIKALNIFVERRISALPVVDESGKVVDI 318
Cdd:cd04601    69 APEGITLEEAKEILHKHKIEKLPIVDDNGELVGL 102

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains found in the metalloprotease peptidase M50; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains in peptidase M50. Members of the M50 metallopeptidase family include mammalian sterol-regulatory element binding protein (SREBP) site 2 proteases and various hypothetical bacterial homologues. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958770485 210 ISPDASLFDAVYSLI--KNKIHRLPVIDP-------ISGNAL-YILTHKrilkflqlfMSDMPKPAFMKqnldelgigTY 279
Cdd:cd04639    10 VDADLTLREFADDYLigKKSWREFLVTDEagrlvglITVDDLrAIPTSQ---------WPDTPVRELMK---------PL 71

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*...
gi 1958770485 280 HNIAFIHPNTPIIKALNIFVERRISALPVVDESGKVVDIYSKFDVINL 327
Cdd:cd04639    72 EEIPTVAADQSLLEVVKLLEEQQLPALAVVSENGTLVGLIEKEDIIEL 119

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the GGDEF (DiGuanylate-Cyclase (DGC)) domain; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains in association with the GGDEF (DiGuanylate-Cyclase (DGC)) domain. The GGDEF domain has been suggested to be homologous to the adenylyl cyclase catalytic domain and is thought to be involved in regulating cell surface adhesiveness in bacteria. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....
gi 1958770485 208 VNISPDASLFDAVYSLIKNKIHRLPVIDpiSGNALYILTHKRIL 251
Cdd:cd04599    64 VTISPEASLWEAKELMEEHGIERLVVVE--EGRLVGIITKSTLY 105

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains present in archaea; The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1958770485 161 VGMLTITDFINILHRYYKS-PMVQIYELEEHkietwrelylqetfkPLVNISPDASLFDAVYSLIKNKIHRLPVID 235
Cdd:cd17776    38 AGILTETDALHAGYATDDPfSEIPVRAVASR---------------PLVTISPTATLREAAERMVDEGVKKLPVVD 98

Two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the bacterial CAP_ED (cAMP receptor protein effector domain) family of transcription factors, the NT (Nucleotidyltransferase) Pol-beta-like domain, and the DUF294 dom; This cd contains two tandem repeats of the cystathionine beta-synthase (CBS pair) domains associated with the bacterial CAP_ED (cAMP receptor protein effector domain) family of transcription factors, the NT_Pol-beta-like domain, and the DUF294 domain. Members of CAP_ED, include CAP which binds cAMP, FNR (fumarate and nitrate reductase) which uses an iron-sulfur cluster to sense oxygen, and CooA a heme containing CO sensor. In all cases binding of the effector leads to conformational changes and the ability to activate transcription. The NT_Pol-beta-like domain includes the Nucleotidyltransferase (NT) domains of DNA polymerase beta and other family X DNA polymerases, as well as the NT domains of class I and class II CCA-adding enzymes, RelA- and SpoT-like ppGpp synthetases and hydrolases, 2'5'-oligoadenylate (2-5A)synthetases, Escherichia coli adenylyltransferase (GlnE), Escherichia coli uridylyl transferase (GlnD), poly (A) polymerases, terminal uridylyl transferases, Staphylococcus aureus kanamycin nucleotidyltransferase, and similar proteins. DUF294 is a putative nucleotidyltransferase with a conserved DxD motif. CBS is a small domain originally identified in cystathionine beta-synthase and subsequently found in a wide range of different proteins. The CBS domain, named after human CBS, is a small domain originally identified in cystathionine beta-synthase and is subsequently found in a wide range of different proteins. CBS domains usually occur in tandem repeats. They associate to form a so-called Bateman domain or a CBS pair based on crystallographic studies in bacteria. The CBS pair was used as a basis for this cd hierarchy since the human CBS proteins can adopt the typical core structure and form an intramolecular CBS pair. The interface between the two CBS domains forms a cleft that is a potential ligand binding site. The CBS pair coexists with a variety of other functional domains and this has been used to help in its classification here. It has been proposed that the CBS domain may play a regulatory role, although its exact function is unknown. Mutations of conserved residues within this domain are associated with a variety of human hereditary diseases, including congenital myotonia, idiopathic generalized epilepsy, hypercalciuric nephrolithiasis, and classic Bartter syndrome (CLC chloride channel family members), Wolff-Parkinson-White syndrome (gamma 2 subunit of AMP-activated protein kinase), retinitis pigmentosa (IMP dehydrogenase-1), and homocystinuria (cystathionine beta-synthase).

                          10        20        30
                  ....*....|....*....|....*....|.
gi 1958770485 205 KPLVNISPDASLFDAVYSLIKNKIHRLPVID 235
Cdd:cd04587    68 PPPVTIDADALVFEALLLMLERNIHHLPVVD 98