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Conserved domains on  [gi|1995569479|gb|QSF54756|]
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LysR family transcriptional regulator [Brevundimonas fontaquae]

Protein Classification

LysR family transcriptional regulator( domain architecture ID 11426483)

LysR family transcriptional regulator containing an N-terminal HTH (helix-turn-helix) DNA-binding domain and a C-terminal substrate binding domain, which is structurally homologous to the type 2 periplasmic-binding (PBP2) fold proteins

CATH:  3.40.190.10
Gene Ontology:  GO:0003700|GO:0003677|GO:0006355
SCOP:  4000316

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
LysR COG0583
DNA-binding transcriptional regulator, LysR family [Transcription];
92-382 1.19e-42

DNA-binding transcriptional regulator, LysR family [Transcription];


:

Pssm-ID: 440348 [Multi-domain]  Cd Length: 256  Bit Score: 149.63  E-value: 1.19e-42
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  92 LHELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHARAAVSLRDLDHLDAFG 171
Cdd:COG0583     3 LRQLRAFVAVAEEGSFTAAAERLGVSQPAVSRQIRRLEEELGVPLFERTGRGLRLTEAGERLLERARRILAELEEAEAEL 82
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 172 RQLASGEEAILRVVLGDLCPRPMILGALSKFFAGHPRTRLHLDYEAVTGPFERLDEGTTDLIIHRVDASRYDFEQMEICK 251
Cdd:COG0583    83 RALRGGPRGTLRIGAPPSLARYLLPPLLARFRARHPGVRLELREGNSDRLVDALLEGELDLAIRLGPPPDPGLVARPLGE 162
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 252 VQLVPVVAPGflsfaptpetrhdalrsltqcvirdtarqpgtenHFLIEGAPQCSapDMAMKKELILNRLAWGHLPDFMV 331
Cdd:COG0583   163 ERLVLVASPD----------------------------------HPLARRAPLVN--SLEALLAAVAAGLGIALLPRFLA 206
                         250       260       270       280       290
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1995569479 332 EQEVRSGTLLNLQGRHLPGRREtLAVMRHRNKPHGPVAEALWRWIRDQLRS 382
Cdd:COG0583   207 ADELAAGRLVALPLPDPPPPRP-LYLVWRRRRHLSPAVRAFLDFLREALAE 256
 
Name Accession Description Interval E-value
LysR COG0583
DNA-binding transcriptional regulator, LysR family [Transcription];
92-382 1.19e-42

DNA-binding transcriptional regulator, LysR family [Transcription];


Pssm-ID: 440348 [Multi-domain]  Cd Length: 256  Bit Score: 149.63  E-value: 1.19e-42
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  92 LHELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHARAAVSLRDLDHLDAFG 171
Cdd:COG0583     3 LRQLRAFVAVAEEGSFTAAAERLGVSQPAVSRQIRRLEEELGVPLFERTGRGLRLTEAGERLLERARRILAELEEAEAEL 82
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 172 RQLASGEEAILRVVLGDLCPRPMILGALSKFFAGHPRTRLHLDYEAVTGPFERLDEGTTDLIIHRVDASRYDFEQMEICK 251
Cdd:COG0583    83 RALRGGPRGTLRIGAPPSLARYLLPPLLARFRARHPGVRLELREGNSDRLVDALLEGELDLAIRLGPPPDPGLVARPLGE 162
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 252 VQLVPVVAPGflsfaptpetrhdalrsltqcvirdtarqpgtenHFLIEGAPQCSapDMAMKKELILNRLAWGHLPDFMV 331
Cdd:COG0583   163 ERLVLVASPD----------------------------------HPLARRAPLVN--SLEALLAAVAAGLGIALLPRFLA 206
                         250       260       270       280       290
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1995569479 332 EQEVRSGTLLNLQGRHLPGRREtLAVMRHRNKPHGPVAEALWRWIRDQLRS 382
Cdd:COG0583   207 ADELAAGRLVALPLPDPPPPRP-LYLVWRRRRHLSPAVRAFLDFLREALAE 256
HTH_1 pfam00126
Bacterial regulatory helix-turn-helix protein, lysR family;
92-151 6.72e-17

Bacterial regulatory helix-turn-helix protein, lysR family;


Pssm-ID: 459683 [Multi-domain]  Cd Length: 60  Bit Score: 74.34  E-value: 6.72e-17
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  92 LHELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGR 151
Cdd:pfam00126   1 LRQLRLFVAVAETGSFTAAAERLGLSQPAVSRQIKRLEEELGVPLFERTTRGVRLTEAGE 60
PRK10094 PRK10094
HTH-type transcriptional activator AllS;
95-352 8.64e-14

HTH-type transcriptional activator AllS;


Pssm-ID: 182237 [Multi-domain]  Cd Length: 308  Bit Score: 71.38  E-value: 8.64e-14
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  95 LRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHARAAVSLRDLDHLDAFGRQL 174
Cdd:PRK10094    7 LRTFIAVAETGSFSKAAERLCKTTATISYRIKLLEENTGVALFFRTTRSVTLTAAGEHLLSQARDWLSWLESMPSELQQV 86
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 175 ASGEEAILRVVLGDLCPRPMILGA-LSKFFAGHPRTRLHLDYEAVTGPFERLDEGTTDLIIHrVDASRYDFEQMEIC--- 250
Cdd:PRK10094   87 NDGVERQVNIVINNLLYNPQAVAQlLAWLNERYPFTQFHISRQIYMGVWDSLLYEGFSLAIG-VTGTEALANTFSLDplg 165
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 251 KVQLVPVVAPGF-LSFAPTPETrHDALRSLTQCVIRDTARQPGTENHFLIEGAPQCSAPDMAMKKELILNRLAWGHLPDF 329
Cdd:PRK10094  166 SVQWRFVMAADHpLANVEEPLT-EAQLRRFPAVNIEDSARTLTKRVAWRLPGQKEIIVPDMETKIAAHLAGVGIGFLPKS 244
                         250       260
                  ....*....|....*....|...
gi 1995569479 330 MVEQEVRSGTLLnlqGRHLPGRR 352
Cdd:PRK10094  245 LCQSMIDNQQLV---SRVIPTMR 264
PBP2_HupR cd08431
The C-terminal substrate binding domain of LysR-type transcriptional regulator, HupR, which ...
182-345 1.31e-08

The C-terminal substrate binding domain of LysR-type transcriptional regulator, HupR, which regulates expression of the heme uptake receptor HupA; contains the type 2 periplasmic binding fold; HupR, a member of the LysR family, activates hupA transcription under low-iron conditions in the presence of hemin. The expression of many iron-uptake genes, such as hupA, is regulated at the transcriptional level by iron and an iron-binding repressor protein called Fur (ferric uptake regulation). Under iron-abundant conditions with heme, the active Fur repressor protein represses transcription of the iron-uptake gene hupA, and prevents transcriptional activation via HupR. Under low-iron conditions with heme, the Fur repressor is inactive and transcription of the hupA is allowed. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176122 [Multi-domain]  Cd Length: 195  Bit Score: 54.20  E-value: 1.31e-08
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 182 LRVVLGDLCPRPMILGALSKFFAGHPRTRLHLDYEAVTGPFERLDEGTTDLII-HRVDASRYDFEQMEICKVQLVPVVAP 260
Cdd:cd08431     2 LRIAIDTVLPLQPLYPLIAEFYQLNKATRIRLSEEVLGGTWDALASGRADLVIgATGELPPGGVKTRPLGEVEFVFAVAP 81
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 261 GF-LSFAPTPETRhDALRSLTQCVIRDTARQPGTENHFLIEGAPQCSAPDMAMKKELILNRLAWGHLPDFMVEQEVRSGT 339
Cdd:cd08431    82 NHpLAKLDGPLDA-SAIKQYPAIVVADTSRNLPPRSSGLLEGQDRIRVPTMQAKIDAQVLGLGVGYLPRHLAKPELASGE 160

                  ....*.
gi 1995569479 340 LLNLQG 345
Cdd:cd08431   161 LVEKAL 166
decaheme_TF NF041036
multiheme cytochrome-associated LysR family transcriptional regulator; Members of this family, ...
95-152 1.35e-06

multiheme cytochrome-associated LysR family transcriptional regulator; Members of this family, including founding member GSU2202 from Geobacter sulfurreducens PCA, are LysR family transcriptional regulators found regularly in the vicinity of multiheme cytochromes such as GSU2203, a decaheme c-type cytochrome.


Pssm-ID: 468965 [Multi-domain]  Cd Length: 301  Bit Score: 49.74  E-value: 1.35e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1995569479  95 LRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRA 152
Cdd:NF041036    6 LKTLVIVAEEGSFSKAAEKLHLTQSAVSQRIKFLEECYGYQLFDRSGPSLEPTAAGEM 63
HTH_MARR smart00347
helix_turn_helix multiple antibiotic resistance protein;
94-157 9.36e-03

helix_turn_helix multiple antibiotic resistance protein;


Pssm-ID: 197670 [Multi-domain]  Cd Length: 101  Bit Score: 35.26  E-value: 9.36e-03
                           10        20        30        40        50        60        70
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1995569479   94 ELRCLDAVARFG--SFQSAADALHRSHPSVFASVARLEANlGL-----KLLDRSGYRVELTDAGRAFHARA 157
Cdd:smart00347  12 QFLVLRILYEEGplSVSELAKRLGVSPSTVTRVLDRLEKK-GLvrrepSPEDRRSVLVSLTEEGRELIEQL 81
 
Name Accession Description Interval E-value
LysR COG0583
DNA-binding transcriptional regulator, LysR family [Transcription];
92-382 1.19e-42

DNA-binding transcriptional regulator, LysR family [Transcription];


Pssm-ID: 440348 [Multi-domain]  Cd Length: 256  Bit Score: 149.63  E-value: 1.19e-42
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  92 LHELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHARAAVSLRDLDHLDAFG 171
Cdd:COG0583     3 LRQLRAFVAVAEEGSFTAAAERLGVSQPAVSRQIRRLEEELGVPLFERTGRGLRLTEAGERLLERARRILAELEEAEAEL 82
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 172 RQLASGEEAILRVVLGDLCPRPMILGALSKFFAGHPRTRLHLDYEAVTGPFERLDEGTTDLIIHRVDASRYDFEQMEICK 251
Cdd:COG0583    83 RALRGGPRGTLRIGAPPSLARYLLPPLLARFRARHPGVRLELREGNSDRLVDALLEGELDLAIRLGPPPDPGLVARPLGE 162
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 252 VQLVPVVAPGflsfaptpetrhdalrsltqcvirdtarqpgtenHFLIEGAPQCSapDMAMKKELILNRLAWGHLPDFMV 331
Cdd:COG0583   163 ERLVLVASPD----------------------------------HPLARRAPLVN--SLEALLAAVAAGLGIALLPRFLA 206
                         250       260       270       280       290
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1995569479 332 EQEVRSGTLLNLQGRHLPGRREtLAVMRHRNKPHGPVAEALWRWIRDQLRS 382
Cdd:COG0583   207 ADELAAGRLVALPLPDPPPPRP-LYLVWRRRRHLSPAVRAFLDFLREALAE 256
HTH_1 pfam00126
Bacterial regulatory helix-turn-helix protein, lysR family;
92-151 6.72e-17

Bacterial regulatory helix-turn-helix protein, lysR family;


Pssm-ID: 459683 [Multi-domain]  Cd Length: 60  Bit Score: 74.34  E-value: 6.72e-17
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  92 LHELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGR 151
Cdd:pfam00126   1 LRQLRLFVAVAETGSFTAAAERLGLSQPAVSRQIKRLEEELGVPLFERTTRGVRLTEAGE 60
LysR_substrate pfam03466
LysR substrate binding domain; The structure of this domain is known and is similar to the ...
182-381 1.97e-16

LysR substrate binding domain; The structure of this domain is known and is similar to the periplasmic binding proteins. This domain binds a variety of ligands that caries in size and structure, such as amino acids, sugar phosphates, organic acids, metal cations, flavonoids, C6-ring carboxylic acids, H2O2, HOCl, homocysteine, NADPH, ATP, sulphate, muropeptides, acetate, salicylate, citrate, phenol- and quinolone derivatives, acetylserines, fatty acid CoA, shikimate, chorismate, homocysteine, indole-3-acetic acid, Na(I), c-di-GMP, ppGpp and hydrogen peroxide (Matilla et. al., FEMS Microbiology Reviews, fuab043, 45, 2021, 1. https://doi.org/10.1093/femsre/fuab043).


Pssm-ID: 460931 [Multi-domain]  Cd Length: 205  Bit Score: 77.33  E-value: 1.97e-16
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 182 LRVVLGDLCPRPMILGALSKFFAGHPRTRLHLDYEAVTGPFERLDEGTTDLIIHRVDASRYDFEQMEICKVQLVPVVAPG 261
Cdd:pfam03466   4 LRIGAPPTLASYLLPPLLARFRERYPDVELELTEGNSEELLDLLLEGELDLAIRRGPPDDPGLEARPLGEEPLVLVAPPD 83
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 262 FLSFAPTPET-----RHDALRSLTQCVIRDTARQPGTENHFLIEGAPQCSapDMAMKKELILNRLAWGHLPDFMVEQEVR 336
Cdd:pfam03466  84 HPLARGEPVSledlaDEPLILLPPGSGLRDLLDRALRAAGLRPRVVLEVN--SLEALLQLVAAGLGIALLPRSAVARELA 161
                         170       180       190       200
                  ....*....|....*....|....*....|....*....|....*
gi 1995569479 337 SGTLLNLQGRHLPGRREtLAVMRHRNKPHGPVAEALWRWIRDQLR 381
Cdd:pfam03466 162 DGRLVALPLPEPPLPRE-LYLVWRKGRPLSPAVRAFIEFLREALA 205
PRK10094 PRK10094
HTH-type transcriptional activator AllS;
95-352 8.64e-14

HTH-type transcriptional activator AllS;


Pssm-ID: 182237 [Multi-domain]  Cd Length: 308  Bit Score: 71.38  E-value: 8.64e-14
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  95 LRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHARAAVSLRDLDHLDAFGRQL 174
Cdd:PRK10094    7 LRTFIAVAETGSFSKAAERLCKTTATISYRIKLLEENTGVALFFRTTRSVTLTAAGEHLLSQARDWLSWLESMPSELQQV 86
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 175 ASGEEAILRVVLGDLCPRPMILGA-LSKFFAGHPRTRLHLDYEAVTGPFERLDEGTTDLIIHrVDASRYDFEQMEIC--- 250
Cdd:PRK10094   87 NDGVERQVNIVINNLLYNPQAVAQlLAWLNERYPFTQFHISRQIYMGVWDSLLYEGFSLAIG-VTGTEALANTFSLDplg 165
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 251 KVQLVPVVAPGF-LSFAPTPETrHDALRSLTQCVIRDTARQPGTENHFLIEGAPQCSAPDMAMKKELILNRLAWGHLPDF 329
Cdd:PRK10094  166 SVQWRFVMAADHpLANVEEPLT-EAQLRRFPAVNIEDSARTLTKRVAWRLPGQKEIIVPDMETKIAAHLAGVGIGFLPKS 244
                         250       260
                  ....*....|....*....|...
gi 1995569479 330 MVEQEVRSGTLLnlqGRHLPGRR 352
Cdd:PRK10094  245 LCQSMIDNQQLV---SRVIPTMR 264
PRK11242 PRK11242
DNA-binding transcriptional regulator CynR; Provisional
92-165 1.05e-13

DNA-binding transcriptional regulator CynR; Provisional


Pssm-ID: 183051 [Multi-domain]  Cd Length: 296  Bit Score: 71.14  E-value: 1.05e-13
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1995569479  92 LHELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAF--HARAAvsLRDLD 165
Cdd:PRK11242    3 LRHIRYFLAVAEHGNFTRAAEALHVSQPTLSQQIRQLEESLGVQLFDRSGRTVRLTDAGEVYlrYARRA--LQDLE 76
PRK11074 PRK11074
putative DNA-binding transcriptional regulator; Provisional
93-247 1.46e-13

putative DNA-binding transcriptional regulator; Provisional


Pssm-ID: 182948 [Multi-domain]  Cd Length: 300  Bit Score: 70.74  E-value: 1.46e-13
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  93 HELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHARAAVSLRDLDHLDAFGR 172
Cdd:PRK11074    5 YSLEVVDAVARTGSFSAAAQELHRVPSAVSYTVRQLEEWLAVPLFERRHRDVELTPAGEWFVKEARSVIKKMQETRRQCQ 84
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 173 QLASGEE-----AILRVVLGDLCpRPMILgalsKFFAGHPRTRLHLDYEAVTGPFERLDEGTTDLIIHRVDAS----RYD 243
Cdd:PRK11074   85 QVANGWRgqlsiAVDNIVRPDRT-RQLIV----DFYRHFDDVELIIRQEVFNGVWDALADGRVDIAIGATRAIpvggRFA 159

                  ....
gi 1995569479 244 FEQM 247
Cdd:PRK11074  160 FRDM 163
PRK09791 PRK09791
LysR family transcriptional regulator;
87-245 8.19e-12

LysR family transcriptional regulator;


Pssm-ID: 182077 [Multi-domain]  Cd Length: 302  Bit Score: 65.55  E-value: 8.19e-12
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  87 PASFKLHELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHARAAVSLRDLD- 165
Cdd:PRK09791    2 AFQVKIHQIRAFVEVARQGSIRGASRMLNMSQPALTKSIQELEEGLAAQLFFRRSKGVTLTDAGESFYQHASLILEELRa 81
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 166 -HLDAFGRQ-LASGEeaiLRVVLGDLCPRPMILGALSKFFAGHPRTRLHLDYEAVTGPFERLDEGTTDLIIHRVDASRYD 243
Cdd:PRK09791   82 aQEDIRQRQgQLAGQ---INIGMGASIARSLMPAVISRFHQQHPQVKVRIMEGQLVSMINELRQGELDFTINTYYQGPYD 158

                  ..
gi 1995569479 244 FE 245
Cdd:PRK09791  159 HE 160
PRK11139 PRK11139
DNA-binding transcriptional activator GcvA; Provisional
92-295 9.37e-11

DNA-binding transcriptional activator GcvA; Provisional


Pssm-ID: 182990 [Multi-domain]  Cd Length: 297  Bit Score: 62.17  E-value: 9.37e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  92 LHELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHARAAVSLRDLdhLDAFG 171
Cdd:PRK11139    8 LNALRAFEAAARHLSFTRAAEELFVTQAAVSHQIKALEDFLGLKLFRRRNRSLLLTEEGQRYFLDIREIFDQL--AEATR 85
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 172 RQLASGEEAILRVVLGD------LCPRpmilgaLSKFFAGHPRTRLHLdyEAVTGPFERLDEGttdliihrVD-ASRYDF 244
Cdd:PRK11139   86 KLRARSAKGALTVSLLPsfaiqwLVPR------LSSFNEAHPDIDVRL--KAVDRLEDFLRDD--------VDvAIRYGR 149
                         170       180       190       200       210       220
                  ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1995569479 245 EQMEICKVQ------LVPVVAPGFLSFAPTPET-----RHDALRSLTQCVIRDTARQPGTEN 295
Cdd:PRK11139  150 GNWPGLRVEklldeyLLPVCSPALLNGGKPLKTpedlaRHTLLHDDSREDWRAWFRAAGLDD 211
rbcR CHL00180
LysR transcriptional regulator; Provisional
89-153 1.16e-10

LysR transcriptional regulator; Provisional


Pssm-ID: 177082 [Multi-domain]  Cd Length: 305  Bit Score: 61.96  E-value: 1.16e-10
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1995569479  89 SFKLHELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAF 153
Cdd:CHL00180    4 PFTLDQLRILKAIATEGSFKKAAESLYISQPAVSLQIKNLEKQLNIPLFDRSKNKASLTEAGELL 68
PRK09906 PRK09906
DNA-binding transcriptional regulator HcaR; Provisional
91-236 3.85e-09

DNA-binding transcriptional regulator HcaR; Provisional


Pssm-ID: 182137 [Multi-domain]  Cd Length: 296  Bit Score: 57.47  E-value: 3.85e-09
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  91 KLHELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHARAAVSLRDLDHLDAF 170
Cdd:PRK09906    2 ELRHLRYFVAVAEELNFTKAAEKLHTAQPSLSQQIKDLENCVGVPLLVRDKRKVALTAAGEVFLQDARAILEQAEKAKLR 81
                          90       100       110       120       130       140
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1995569479 171 GRQlASGEEAILRVVLGDLCPRPMILGALSKFFAGHPRTRLHLDYEAVTGPFERLDEGTTDLIIHR 236
Cdd:PRK09906   82 ARK-IVQEDRQLTIGFVPSAEVNLLPKVLPMFRLRHPDTLIELVSLITTQQEEKLRRGELDVGFMR 146
PRK12684 PRK12684
CysB family HTH-type transcriptional regulator;
91-213 4.45e-09

CysB family HTH-type transcriptional regulator;


Pssm-ID: 237173 [Multi-domain]  Cd Length: 313  Bit Score: 57.29  E-value: 4.45e-09
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  91 KLHELRCLDAVARFG-SFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYR-VELTDAGRAFHARAAVSLRDLDHLD 168
Cdd:PRK12684    2 NLHQLRFVREAVRQNfNLTEAAKALYTSQPGVSKAIIELEDELGVEIFTRHGKRlRGLTEPGRIILASVERILQEVENLK 81
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....
gi 1995569479 169 AFGRQLASGEEAIL---------RVVLgdlcPRpmilgALSKFFAGHPRTRLHL 213
Cdd:PRK12684   82 RVGKEFAAQDQGNLtiatthtqaRYAL----PA-----AIKEFKKRYPKVRLSI 126
PBP2_HupR cd08431
The C-terminal substrate binding domain of LysR-type transcriptional regulator, HupR, which ...
182-345 1.31e-08

The C-terminal substrate binding domain of LysR-type transcriptional regulator, HupR, which regulates expression of the heme uptake receptor HupA; contains the type 2 periplasmic binding fold; HupR, a member of the LysR family, activates hupA transcription under low-iron conditions in the presence of hemin. The expression of many iron-uptake genes, such as hupA, is regulated at the transcriptional level by iron and an iron-binding repressor protein called Fur (ferric uptake regulation). Under iron-abundant conditions with heme, the active Fur repressor protein represses transcription of the iron-uptake gene hupA, and prevents transcriptional activation via HupR. Under low-iron conditions with heme, the Fur repressor is inactive and transcription of the hupA is allowed. This substrate-binding domain shows significant homology to the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176122 [Multi-domain]  Cd Length: 195  Bit Score: 54.20  E-value: 1.31e-08
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 182 LRVVLGDLCPRPMILGALSKFFAGHPRTRLHLDYEAVTGPFERLDEGTTDLII-HRVDASRYDFEQMEICKVQLVPVVAP 260
Cdd:cd08431     2 LRIAIDTVLPLQPLYPLIAEFYQLNKATRIRLSEEVLGGTWDALASGRADLVIgATGELPPGGVKTRPLGEVEFVFAVAP 81
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 261 GF-LSFAPTPETRhDALRSLTQCVIRDTARQPGTENHFLIEGAPQCSAPDMAMKKELILNRLAWGHLPDFMVEQEVRSGT 339
Cdd:cd08431    82 NHpLAKLDGPLDA-SAIKQYPAIVVADTSRNLPPRSSGLLEGQDRIRVPTMQAKIDAQVLGLGVGYLPRHLAKPELASGE 160

                  ....*.
gi 1995569479 340 LLNLQG 345
Cdd:cd08431   161 LVEKAL 166
PRK10086 PRK10086
DNA-binding transcriptional regulator DsdC;
89-166 9.84e-08

DNA-binding transcriptional regulator DsdC;


Pssm-ID: 182231 [Multi-domain]  Cd Length: 311  Bit Score: 53.08  E-value: 9.84e-08
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1995569479  89 SFKLHELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAG-RAFHARAAvSLRDLDH 166
Cdd:PRK10086   13 GWQLSKLHTFEVAARHQSFALAADELSLTPSAVSHRINQLEEELGIKLFVRSHRKVELTEEGkRVFWALKS-SLDTLNQ 90
PRK11151 PRK11151
DNA-binding transcriptional regulator OxyR; Provisional
94-234 1.13e-07

DNA-binding transcriptional regulator OxyR; Provisional


Pssm-ID: 182999 [Multi-domain]  Cd Length: 305  Bit Score: 52.72  E-value: 1.13e-07
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  94 ELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHARAAVSLRDLDHLdafgRQ 173
Cdd:PRK11151    5 DLEYLVALAEHRHFRRAADSCHVSQPTLSGQIRKLEDELGVMLLERTSRKVLFTQAGLLLVDQARTVLREVKVL----KE 80
                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 174 LAS--GEEAILRVVLGdLCPR------PMILGALSKFFaghPRTRLHLdYEAVTGPF-ERLDEGTTDLII 234
Cdd:PRK11151   81 MASqqGETMSGPLHIG-LIPTvgpyllPHIIPMLHQTF---PKLEMYL-HEAQTHQLlAQLDSGKLDCAI 145
PRK12682 PRK12682
transcriptional regulator CysB-like protein; Reviewed
91-213 2.75e-07

transcriptional regulator CysB-like protein; Reviewed


Pssm-ID: 183679 [Multi-domain]  Cd Length: 309  Bit Score: 51.92  E-value: 2.75e-07
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  91 KLHELRCLDAVARFG-SFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVE-LTDAGRAFHARAAVSLRDLDHLD 168
Cdd:PRK12682    2 NLQQLRFVREAVRRNlNLTEAAKALHTSQPGVSKAIIELEEELGIEIFIRHGKRLKgLTEPGKAVLDVIERILREVGNIK 81
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*
gi 1995569479 169 AFGRQLASGEEAILRVVLGDLCPRPMILGALSKFFAGHPRTRLHL 213
Cdd:PRK12682   82 RIGDDFSNQDSGTLTIATTHTQARYVLPRVVAAFRKRYPKVNLSL 126
PRK10632 PRK10632
HTH-type transcriptional activator AaeR;
101-154 7.41e-07

HTH-type transcriptional activator AaeR;


Pssm-ID: 182601 [Multi-domain]  Cd Length: 309  Bit Score: 50.53  E-value: 7.41e-07
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....
gi 1995569479 101 VARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFH 154
Cdd:PRK10632   13 VVEFGSFTAAARQLQMSVSSISQTVSKLEDELQVKLLNRSTRSIGLTEAGRIYY 66
decaheme_TF NF041036
multiheme cytochrome-associated LysR family transcriptional regulator; Members of this family, ...
95-152 1.35e-06

multiheme cytochrome-associated LysR family transcriptional regulator; Members of this family, including founding member GSU2202 from Geobacter sulfurreducens PCA, are LysR family transcriptional regulators found regularly in the vicinity of multiheme cytochromes such as GSU2203, a decaheme c-type cytochrome.


Pssm-ID: 468965 [Multi-domain]  Cd Length: 301  Bit Score: 49.74  E-value: 1.35e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1995569479  95 LRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRA 152
Cdd:NF041036    6 LKTLVIVAEEGSFSKAAEKLHLTQSAVSQRIKFLEECYGYQLFDRSGPSLEPTAAGEM 63
PRK09801 PRK09801
LysR family transcriptional regulator;
94-276 1.49e-06

LysR family transcriptional regulator;


Pssm-ID: 182085 [Multi-domain]  Cd Length: 310  Bit Score: 49.65  E-value: 1.49e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  94 ELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHARAAVSLRDLDHLDAFGRQ 173
Cdd:PRK09801   10 DLQVLVEIVHSGSFSAAAATLGQTPAFVTKRIQILENTLATTLLNRSARGVALTESGQRCYEHALEILTQYQRLVDDVTQ 89
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 174 LASGEEAILRVVLGDLCPRPMILGALSKFFAGHPRTRLHLDYeavtgpFER---LDEGTTDLIIHRVDASRYDFEQMEIC 250
Cdd:PRK09801   90 IKTRPEGMIRIGCSFGFGRSHIAPAITELMRNYPELQVHFEL------FDRqidLVQDNIDLDIRINDEIPDYYIAHLLT 163
                         170       180       190
                  ....*....|....*....|....*....|.
gi 1995569479 251 KVQLVPVVAPGFLSFAPTPET-----RHDAL 276
Cdd:PRK09801  164 KNKRILCAAPEYLQKYPQPQSlqelsRHDCL 194
PRK13348 PRK13348
HTH-type transcriptional regulator ArgP;
94-187 1.10e-05

HTH-type transcriptional regulator ArgP;


Pssm-ID: 237357 [Multi-domain]  Cd Length: 294  Bit Score: 46.89  E-value: 1.10e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  94 ELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGyRVELTDAGRAF--HARaAVSLRDLDHLdafg 171
Cdd:PRK13348    6 QLEALAAVVETGSFERAARRLHVTPSAVSQRIKALEESLGQPLLVRGR-PCRPTPAGQRLlrHLR-QVALLEADLL---- 79
                          90
                  ....*....|....*.
gi 1995569479 172 RQLASGEEAILRVVLG 187
Cdd:PRK13348   80 STLPAERGSPPTLAIA 95
PBP2_LTTR_substrate cd05466
The substrate binding domain of LysR-type transcriptional regulators (LTTRs), a member of the ...
195-376 3.01e-05

The substrate binding domain of LysR-type transcriptional regulators (LTTRs), a member of the type 2 periplasmic binding fold protein superfamily; This model and hierarchy represent the the substrate-binding domain of the LysR-type transcriptional regulators that form the largest family of prokaryotic transcription factor. Homologs of some of LTTRs with similar domain organizations are also found in the archaea and eukaryotic organisms. The LTTRs are composed of two functional domains joined by a linker helix involved in oligomerization: an N-terminal HTH (helix-turn-helix) domain, which is responsible for the DNA-binding specificity, and a C-terminal substrate-binding domain, which is structurally homologous to the type 2 periplasmic binding proteins. As also observed in the periplasmic binding proteins, the C-terminal domain of the bacterial transcriptional repressor undergoes a conformational change upon substrate binding which in turn changes the DNA binding affinity of the repressor. The genes controlled by the LTTRs have diverse functional roles including amino acid biosynthesis, CO2 fixation, antibiotic resistance, degradation of aromatic compounds, oxidative stress responses, nodule formation of nitrogen-fixing bacteria, synthesis of virulence factors, toxin production, attachment and secretion, to name a few. The structural topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis. Besides transport proteins, the PBP2 superfamily includes the substrate-binding domains from ionotropic glutamate receptors, LysR-like transcriptional regulators, and unorthodox sensor proteins involved in signal transduction.


Pssm-ID: 176102 [Multi-domain]  Cd Length: 197  Bit Score: 44.51  E-value: 3.01e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 195 ILGALSKFFAGHPRTRLHLDYEAVTGPFERLDEGTTDLIIHRVDASRYDFEQMEICKVQLVPVVAPGFlsfaptPETRHD 274
Cdd:cd05466    15 LPPLLAAFRQRYPGVELSLVEGGSSELLEALLEGELDLAIVALPVDDPGLESEPLFEEPLVLVVPPDH------PLAKRK 88
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 275 ALRsltqcvIRDTARQP------GTENHFLIEGA---------PQCSAPDMAMKKELILNRLAWGHLPDFMVEQEVRSGt 339
Cdd:cd05466    89 SVT------LADLADEPlilferGSGLRRLLDRAfaeagftpnIALEVDSLEAIKALVAAGLGIALLPESAVEELADGG- 161
                         170       180       190
                  ....*....|....*....|....*....|....*....
gi 1995569479 340 llnLQGRHL--PGRRETLAVMRHRNKPHGPVAEALWRWI 376
Cdd:cd05466   162 ---LVVLPLedPPLSRTIGLVWRKGRYLSPAARAFLELL 197
PRK10837 PRK10837
putative DNA-binding transcriptional regulator; Provisional
92-213 1.74e-04

putative DNA-binding transcriptional regulator; Provisional


Pssm-ID: 182768 [Multi-domain]  Cd Length: 290  Bit Score: 43.14  E-value: 1.74e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  92 LHELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHARaAVSLrdldhLDAFG 171
Cdd:PRK10837    5 LRQLEVFAEVLKSGSTTQASVMLALSQSAVSAALTDLEGQLGVQLFDRVGKRLVVNEHGRLLYPR-ALAL-----LEQAV 78
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....
gi 1995569479 172 --RQLASGEEAILRVVLGDLCPRPMILGALSKFFAGHPRTRLHL 213
Cdd:PRK10837   79 eiEQLFREDNGALRIYASSTIGNYILPAMIARYRRDYPQLPLEL 122
PRK10341 PRK10341
transcriptional regulator TdcA;
91-164 1.92e-04

transcriptional regulator TdcA;


Pssm-ID: 182391 [Multi-domain]  Cd Length: 312  Bit Score: 42.93  E-value: 1.92e-04
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1995569479  91 KLHELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHARAAVSLRDL 164
Cdd:PRK10341    8 KTQHLVVFQEVIRSGSIGSAAKELGLTQPAVSKIINDIEDYFGVELIVRKNTGVTLTPAGQVLLSRSESITREM 81
PRK11233 PRK11233
nitrogen assimilation transcriptional regulator; Provisional
105-162 7.02e-04

nitrogen assimilation transcriptional regulator; Provisional


Pssm-ID: 183045 [Multi-domain]  Cd Length: 305  Bit Score: 41.21  E-value: 7.02e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 1995569479 105 GSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHARAAVSLR 162
Cdd:PRK11233   16 GSLTQAAEVLHIAQPALSQQVATLEGELNQQLLIRTKRGVTPTEAGKILYTHARAILR 73
PRK12683 PRK12683
transcriptional regulator CysB-like protein; Reviewed
91-184 8.70e-04

transcriptional regulator CysB-like protein; Reviewed


Pssm-ID: 237172 [Multi-domain]  Cd Length: 309  Bit Score: 40.80  E-value: 8.70e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  91 KLHELRCLDAVARFG-SFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVE-LTDAGRAFHARAAVSLRDLDHLD 168
Cdd:PRK12683    2 NFQQLRIIREAVRQNfNLTEVANALYTSQSGVSKQIKDLEDELGVEIFIRRGKRLTgLTEPGKELLQIVERMLLDAENLR 81
                          90
                  ....*....|....*.
gi 1995569479 169 AFGRQLASGEEAILRV 184
Cdd:PRK12683   82 RLAEQFADRDSGHLTV 97
PRK12680 PRK12680
LysR family transcriptional regulator;
92-234 1.07e-03

LysR family transcriptional regulator;


Pssm-ID: 183677 [Multi-domain]  Cd Length: 327  Bit Score: 40.76  E-value: 1.07e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  92 LHELRCLDAVARFG-SFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVE-LTDAGRAFHARAAVSLRDLDHLDA 169
Cdd:PRK12680    3 LTQLRYLVAIADAElNITLAAARVHATQPGLSKQLKQLEDELGFLLFVRKGRSLEsVTPAGVEVIERARAVLSEANNIRT 82
                          90       100       110       120       130       140
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1995569479 170 FGRQLASGEEAILRVVLGDLCPRPMILGALSKFFAGHPRTRLHLDYEAVTGPFERLDEGTTDLII 234
Cdd:PRK12680   83 YAANQRRESQGQLTLTTTHTQARFVLPPAVAQIKQAYPQVSVHLQQAAESAALDLLGQGDADIAI 147
PRK11013 PRK11013
DNA-binding transcriptional regulator LysR; Provisional
100-212 2.04e-03

DNA-binding transcriptional regulator LysR; Provisional


Pssm-ID: 236819 [Multi-domain]  Cd Length: 309  Bit Score: 39.59  E-value: 2.04e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 100 AVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAG-RAFH--ARAAVSLRDLDHLDAFGRQLAS 176
Cdd:PRK11013   14 AVMTAGSLTEAARLLHTSQPTVSRELARFEKVIGLKLFERVRGRLHPTVQGlRLFEevQRSYYGLDRIVSAAESLREFRQ 93
                          90       100       110
                  ....*....|....*....|....*....|....*...
gi 1995569479 177 GEEAI--LRVVLGDLCPrpmilGALSKFFAGHPRTRLH 212
Cdd:PRK11013   94 GQLSIacLPVFSQSLLP-----GLCQPFLARYPDVSLN 126
MntR COG1321
Mn-dependent transcriptional regulator MntR, DtxR family [Transcription];
111-152 3.13e-03

Mn-dependent transcriptional regulator MntR, DtxR family [Transcription];


Pssm-ID: 440932 [Multi-domain]  Cd Length: 135  Bit Score: 37.49  E-value: 3.13e-03
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|...
gi 1995569479 111 ADALHRSHPSVFASVARLEANlglKLLDRSGYR-VELTDAGRA 152
Cdd:COG1321    31 AERLGVSPPSVTEMLKKLEEK---GLVEYEPYGgITLTEEGRE 70
PBP2_CrgA_like cd08422
The C-terminal substrate binding domain of LysR-type transcriptional regulator CrgA and its ...
192-340 3.67e-03

The C-terminal substrate binding domain of LysR-type transcriptional regulator CrgA and its related homologs, contains the type 2 periplasmic binding domain; This CD includes the substrate binding domain of LysR-type transcriptional regulator (LTTR) CrgA and its related homologs. The LTTRs are acting as both auto-repressors and activators of target promoters, controlling operons involved in a wide variety of cellular processes such as amino acid biosynthesis, CO2 fixation, antibiotic resistance, degradation of aromatic compounds, nodule formation of nitrogen-fixing bacteria, and synthesis of virulence factors, to name a few. In contrast to the tetrameric form of other LTTRs, CrgA from Neisseria meningitides assembles into an octameric ring, which can bind up to four 63-bp DNA oligonucleotides. Phylogenetic cluster analysis further showed that the CrgA-like regulators form a subclass of the LTTRs that function as octamers. The CrgA is an auto-repressor of its own gene and activates the expression of the mdaB gene which coding for an NADPH-quinone reductase and that its action is increased by MBL (alpha-methylene-gamma-butyrolactone), an inducer of NADPH-quinone oxidoreductase. The structural topology of this substrate-binding domain is most similar to that of the type 2 periplasmic binding proteins (PBP2), which are responsible for the uptake of a variety of substrates such as phosphate, sulfate, polysaccharides, lysine/arginine/ornithine, and histidine. The PBP2 bind their ligand in the cleft between these domains in a manner resembling a Venus flytrap. After binding their specific ligand with high affinity, they can interact with a cognate membrane transport complex comprised of two integral membrane domains and two cytoplasmically located ATPase domains. This interaction triggers the ligand translocation across the cytoplasmic membrane energized by ATP hydrolysis.


Pssm-ID: 176114 [Multi-domain]  Cd Length: 197  Bit Score: 38.19  E-value: 3.67e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 192 RPMILGALSKFFAGHPRTRLHLDyeavtgpferLDEGTTDLIIHRVDAS-RYDFEQME------ICKVQLVPVVAPGFLS 264
Cdd:cd08422    13 RLHLAPLLAEFLARYPDVRLELV----------LSDRLVDLVEEGFDLAiRIGELPDSslvarrLGPVRRVLVASPAYLA 82
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 265 FAPTPET-----RHDALR-SLTQCVIRDTARQPGTENHFLIEGAPQCSAPDMAmkKELILNRLAWGHLPDFMVEQEVRSG 338
Cdd:cd08422    83 RHGTPQTpedlaRHRCLGyRLPGRPLRWRFRRGGGEVEVRVRGRLVVNDGEAL--RAAALAGLGIALLPDFLVAEDLASG 160

                  ..
gi 1995569479 339 TL 340
Cdd:cd08422   161 RL 162
PRK09986 PRK09986
LysR family transcriptional regulator;
92-187 3.75e-03

LysR family transcriptional regulator;


Pssm-ID: 182183 [Multi-domain]  Cd Length: 294  Bit Score: 38.94  E-value: 3.75e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  92 LHELRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHARAAVSLRDLDHLDAFG 171
Cdd:PRK09986    9 LKLLRYFLAVAEELHFGRAAARLNISQPPLSIHIKELEDQLGTPLFIRHSRSVVLTHAGKILMEESRRLLDNAEQSLARV 88
                          90
                  ....*....|....*.
gi 1995569479 172 RQLASGEEAilRVVLG 187
Cdd:PRK09986   89 EQIGRGEAG--RIEIG 102
PRK03635 PRK03635
ArgP/LysG family DNA-binding transcriptional regulator;
95-378 6.12e-03

ArgP/LysG family DNA-binding transcriptional regulator;


Pssm-ID: 235144 [Multi-domain]  Cd Length: 294  Bit Score: 38.22  E-value: 6.12e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  95 LRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRsGYRVELTDAGRAFharaavsLRDLDHLdafgRQL 174
Cdd:PRK03635    7 LEALAAVVREGSFERAAQKLHITQSAVSQRIKALEERVGQVLLVR-TQPCRPTEAGQRL-------LRHARQV----RLL 74
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 175 asgeEAILRVVLGDLCPRPMIL--------------GALSKFFAGHP-RTRLHLDYEAVTGpfERLDEGTtdlIIHRVDA 239
Cdd:PRK03635   75 ----EAELLGELPALDGTPLTLsiavnadslatwflPALAPVLARSGvLLDLVVEDQDHTA--ELLRRGE---VVGAVTT 145
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 240 SRydfEQMEICKVQL------VPVVAPGF----LSFAPTPET----------RHDAL--RSLTQCVIRDTARQPgteNHF 297
Cdd:PRK03635  146 EP---QPVQGCRVDPlgamryLAVASPAFaaryFPDGVTAEAlakapavvfnRKDDLqdRFLRQAFGLPPGSVP---CHY 219
                         250       260       270       280       290       300       310       320
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 298 LiegapqcsaPDMAMKKELILNRLAWGHLPDFMVEQEVRSGTLLNLqgrhLPGRRETLAVMRHRNKPHGPVAEALWRWIR 377
Cdd:PRK03635  220 V---------PSSEAFVRAALAGLGWGMIPELQIEPELASGELVDL----TPGRPLDVPLYWQHWRLESRLLDRLTDALL 286

                  .
gi 1995569479 378 D 378
Cdd:PRK03635  287 A 287
PRK15092 PRK15092
DNA-binding transcriptional repressor LrhA; Provisional
95-234 7.36e-03

DNA-binding transcriptional repressor LrhA; Provisional


Pssm-ID: 237907 [Multi-domain]  Cd Length: 310  Bit Score: 38.09  E-value: 7.36e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479  95 LRCLDAVARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAF--HAR--------AAVSLR-- 162
Cdd:PRK15092   16 LRTFVAVADLNTFAAAAAAVCRTQSAVSQQMQRLEQLVGKELFARHGRNKLLTEHGIQLlgYARkilrfndeACSSLMys 95
                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1995569479 163 DLDHLDAFGrqlASGEEA--ILrvvlgdlcprPMILGALSKFFAghprtRLHLDYEAVTGPF--ERLDEGTTDLII 234
Cdd:PRK15092   96 NLQGVLTIG---ASDDTAdtIL----------PFLLNRVSSVYP-----KLALDVRVKRNAFmmEMLESQEVDLAV 153
PRK14997 PRK14997
LysR family transcriptional regulator; Provisional
101-214 7.79e-03

LysR family transcriptional regulator; Provisional


Pssm-ID: 184959 [Multi-domain]  Cd Length: 301  Bit Score: 38.05  E-value: 7.79e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1995569479 101 VARFGSFQSAADALHRSHPSVFASVARLEANLGLKLLDRSGYRVELTDAGRAFHaraavslrdlDHLDAFGRQLASGEEA 180
Cdd:PRK14997   13 VVEEGGFAAAGRALDEPKSKLSRRIAQLEERLGVRLIQRTTRQFNVTEVGQTFY----------EHCKAMLVEAQAAQDA 82
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....
gi 1995569479 181 IL------RVVLGDLCPRPM----ILGALSKFFAGHPRTRLHLD 214
Cdd:PRK14997   83 IAalqvepRGIVKLTCPVTLlhvhIGPMLAKFMARYPDVSLQLE 126
HTH_MARR smart00347
helix_turn_helix multiple antibiotic resistance protein;
94-157 9.36e-03

helix_turn_helix multiple antibiotic resistance protein;


Pssm-ID: 197670 [Multi-domain]  Cd Length: 101  Bit Score: 35.26  E-value: 9.36e-03
                           10        20        30        40        50        60        70
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1995569479   94 ELRCLDAVARFG--SFQSAADALHRSHPSVFASVARLEANlGL-----KLLDRSGYRVELTDAGRAFHARA 157
Cdd:smart00347  12 QFLVLRILYEEGplSVSELAKRLGVSPSTVTRVLDRLEKK-GLvrrepSPEDRRSVLVSLTEEGRELIEQL 81
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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