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Conserved domains on  [gi|67090368|gb|AAY67562|]
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cytochrome b, partial (mitochondrion) [Pachyornis geranoides]

Protein Classification

cytochrome b family protein( domain architecture ID 581032)

cytochrome b family protein such as formate dehydrogenase subunit gamma or cytochrome b, a component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex), a respiratory chain that generates an electrochemical potential coupled to ATP synthesis.

Gene Ontology:  GO:0046872|GO:0016491

Graphical summary

 Zoom to residue level

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List of domain hits

 Name Accession Description Interval E-value
Cytochrome_b_N super family cl23723
Cytochrome b (N-terminus)/b6/petB: Cytochrome b is a subunit of cytochrome bc1, an 11-subunit ...
 1-90 1.26e-53

Cytochrome b (N-terminus)/b6/petB: Cytochrome b is a subunit of cytochrome bc1, an 11-subunit mitochondrial respiratory enzyme. Cytochrome b spans the mitochondrial membrane with 8 transmembrane helices (A-H) in eukaryotes. In plants and cyanobacteria, cytochrome b6 is analogous to eukaryote cytochrome b, containing two chains: helices A-D are encoded by the petB gene and helices E-H are encoded by the petD gene in these organisms. Cytochrome b/b6 contains two bound hemes and two ubiquinol/ubiquinone binding sites. The C-terminal portion of cytochrome b is described in a separate CD.


The actual alignment was detected with superfamily member MTH00119:

Pssm-ID: 474033 [Multi-domain]  Cd Length: 380  Bit Score: 170.47  E-value: 1.26e-53
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLT 80
Cdd:MTH00119 163 EWIWGGFSVDNPTLTRFFALHFLLPFLIAGLTLIHLLFLHETGSNNPLGLNSNTDKIPFHPYFSYKDLLGLTLMLTLLLT 242

                         90
                 ....*....|
gi 67090368   81 LAFFSPNLLG 90
Cdd:MTH00119 243 LALFSPNLLG 252
 
Name Accession Description Interval E-value
CYTB MTH00119
cytochrome b; Provisional
 1-90 1.26e-53

cytochrome b; Provisional


Pssm-ID: 214425 [Multi-domain]  Cd Length: 380  Bit Score: 170.47  E-value: 1.26e-53
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLT 80
Cdd:MTH00119 163 EWIWGGFSVDNPTLTRFFALHFLLPFLIAGLTLIHLLFLHETGSNNPLGLNSNTDKIPFHPYFSYKDLLGLTLMLTLLLT 242

                         90
                 ....*....|
gi 67090368   81 LAFFSPNLLG 90
Cdd:MTH00119 243 LALFSPNLLG 252
QcrB/PetB COG1290
Cytochrome b subunit of the bc complex [Energy production and conversion];
1-88 4.92e-22

Cytochrome b subunit of the bc complex [Energy production and conversion];


Pssm-ID: 440901 [Multi-domain]  Cd Length: 393  Bit Score: 87.54  E-value: 4.92e-22
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368   1 EW*WGGFSVDNPTLTRFFALH-FLLPFLIAGITLIHLTFLHESGSNNPLGI----VSHCDKIPFHPYFSTKDILGFMLMF 75
Cdd:COG1290 173 TWLFGGEFPGDATLNRFFALHvLLLPALLLALVVLHLWLLHRHGHNNPPGPerkkTEKVDGVPFHPYYTVKDGFGFFVFL 252

                        90
                ....*....|...
gi 67090368  76 IPLLTLAFFSPNL 88
Cdd:COG1290 253 GVFALLAFFFPIN 265
Cytochrom_B_N_2 pfam13631
Cytochrome b(N-terminal)/b6/petB;
1-90 2.21e-17

Cytochrome b(N-terminal)/b6/petB;


Pssm-ID: 433364  Cd Length: 169  Bit Score: 71.89  E-value: 2.21e-17
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368     1 EW*WGGFSVDNPTLTRFFALHF-LLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLL 79
Cdd:pfam13631  77 WLLFGGPFPGTATIPRFYALHIlLLPGLILALIVAHLLLVEKHGQFPPPGTEKNVVGVPFWPVFAVKMLLFFLITVALLI 156

                          90
                  ....*....|.
gi 67090368    80 TLAFFSPNLLG 90
Cdd:pfam13631 157 GLAQINPIWLG 167
Cytochrome_b_N cd00284
Cytochrome b (N-terminus)/b6/petB: Cytochrome b is a subunit of cytochrome bc1, an 11-subunit ...
 1-45 1.04e-16

Cytochrome b (N-terminus)/b6/petB: Cytochrome b is a subunit of cytochrome bc1, an 11-subunit mitochondrial respiratory enzyme. Cytochrome b spans the mitochondrial membrane with 8 transmembrane helices (A-H) in eukaryotes. In plants and cyanobacteria, cytochrome b6 is analogous to eukaryote cytochrome b, containing two chains: helices A-D are encoded by the petB gene and helices E-H are encoded by the petD gene in these organisms. Cytochrome b/b6 contains two bound hemes and two ubiquinol/ubiquinone binding sites. The C-terminal portion of cytochrome b is described in a separate CD.


Pssm-ID: 238176  Cd Length: 200  Bit Score: 70.86  E-value: 1.04e-16
                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*
gi 67090368   1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSN 45
Cdd:cd00284 156 EWLWGGFSVDNATLTRFFALHFLLPFIIAVIVILHLLFLHEQGSS 200
 
Name Accession Description Interval E-value
CYTB MTH00119
cytochrome b; Provisional
 1-90 1.26e-53

cytochrome b; Provisional


Pssm-ID: 214425 [Multi-domain]  Cd Length: 380  Bit Score: 170.47  E-value: 1.26e-53
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLT 80
Cdd:MTH00119 163 EWIWGGFSVDNPTLTRFFALHFLLPFLIAGLTLIHLLFLHETGSNNPLGLNSNTDKIPFHPYFSYKDLLGLTLMLTLLLT 242

                         90
                 ....*....|
gi 67090368   81 LAFFSPNLLG 90
Cdd:MTH00119 243 LALFSPNLLG 252
CYTB MTH00131
cytochrome b; Provisional
 1-90 5.89e-47

cytochrome b; Provisional


Pssm-ID: 177189 [Multi-domain]  Cd Length: 380  Bit Score: 153.27  E-value: 5.89e-47
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLT 80
Cdd:MTH00131 162 QWIWGGFSVDNATLTRFFAFHFLFPFVIAAATILHLLFLHETGSNNPLGLNSDADKISFHPYFSYKDLLGFAILLLALTS 241

                         90
                 ....*....|
gi 67090368   81 LAFFSPNLLG 90
Cdd:MTH00131 242 LALFSPNLLG 251
CYTB MTH00100
cytochrome b; Provisional
 1-90 1.86e-45

cytochrome b; Provisional


Pssm-ID: 177162 [Multi-domain]  Cd Length: 379  Bit Score: 149.40  E-value: 1.86e-45
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLT 80
Cdd:MTH00100 162 EWIWGGFSVDKATLTRFFAFHFILPFIITALAMVHLLFLHETGSNNPSGIPSDSDKIPFHPYYTIKDILGLLLLILTLML 241

                         90
                 ....*....|
gi 67090368   81 LAFFSPNLLG 90
Cdd:MTH00100 242 LVLFSPDLLG 251
CYTB MTH00156
cytochrome b; Provisional
 1-90 4.02e-45

cytochrome b; Provisional


Pssm-ID: 214440 [Multi-domain]  Cd Length: 356  Bit Score: 148.01  E-value: 4.02e-45
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLT 80
Cdd:MTH00156 152 QWIWGGFSVDNATLTRFFTFHFLLPFIILAMVMIHLLFLHQTGSNNPLGLNSNIDKIPFHPYFTFKDLVGFIIMLMLLIL 231

                         90
                 ....*....|
gi 67090368   81 LAFFSPNLLG 90
Cdd:MTH00156 232 LTLINPYLLG 241
CYTB MTH00191
cytochrome b; Provisional
 1-90 1.81e-44

cytochrome b; Provisional


Pssm-ID: 177239 [Multi-domain]  Cd Length: 365  Bit Score: 146.60  E-value: 1.81e-44
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLT 80
Cdd:MTH00191 159 QWLWGGFSVDNATLTRFFTFHFLLPFLIAALSLIHLLFLHETGSNNPLGLNSDSDKIPFHPYFSYKDILGFFILLFLLLF 238

                         90
                 ....*....|
gi 67090368   81 LAFFSPNLLG 90
Cdd:MTH00191 239 LVLFSPNLLG 248
CYTB MTH00145
cytochrome b; Provisional
 1-90 4.37e-44

cytochrome b; Provisional


Pssm-ID: 177203 [Multi-domain]  Cd Length: 379  Bit Score: 145.82  E-value: 4.37e-44
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLT 80
Cdd:MTH00145 163 EWVWGGFSVGNATLKRFFSLHFLLPFVILGLSVLHLLFLHETGSNNPLGLDSDGDKVPFHPYYTIKDLVGFVVLLFLLVF 242

                         90
                 ....*....|
gi 67090368   81 LAFFSPNLLG 90
Cdd:MTH00145 243 LVLFFPNLLG 252
CYTB MTH00074
cytochrome b; Provisional
 1-90 9.44e-43

cytochrome b; Provisional


Pssm-ID: 177145 [Multi-domain]  Cd Length: 380  Bit Score: 142.51  E-value: 9.44e-43
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLT 80
Cdd:MTH00074 163 QWIWGGFSVDKATLTRFFAFHFLLPFLIAGASIIHLLFLHETGSNNPTGLNSNPDKVPFHPYFSYKDLLGFLIMLTALAL 242

                         90
                 ....*....|
gi 67090368   81 LAFFSPNLLG 90
Cdd:MTH00074 243 LSLFSPNLLG 252
CYTB MTH00016
cytochrome b; Validated
 1-90 8.11e-41

cytochrome b; Validated


Pssm-ID: 177102 [Multi-domain]  Cd Length: 378  Bit Score: 137.50  E-value: 8.11e-41
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLT 80
Cdd:MTH00016 163 QWLWGGFSVDNATLTRFFALHFLLPFVIAALSMIHLLFLHQTGSNNPLGVNSNSDKVPFHPYYTSKDIVGFIVMLFLLLS 242

                         90
                 ....*....|
gi 67090368   81 LAFFSPNLLG 90
Cdd:MTH00016 243 VVLLWPNILG 252
CYTB MTH00034
cytochrome b; Validated
 1-90 4.95e-38

cytochrome b; Validated


Pssm-ID: 177109 [Multi-domain]  Cd Length: 379  Bit Score: 130.21  E-value: 4.95e-38
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLT 80
Cdd:MTH00034 162 QWIWGGFSVDNATLTRFFAFHFLFPFIIAALSIIHLLFLHQTGSNNPTGLNSNYDKVPFHTYFTTKDLVGFLILFAALSS 241

                         90
                 ....*....|
gi 67090368   81 LAFFSPNLLG 90
Cdd:MTH00034 242 LALLFPTALN 251
CYTB MTH00224
cytochrome b; Provisional
 1-89 4.54e-32

cytochrome b; Provisional


Pssm-ID: 164767 [Multi-domain]  Cd Length: 379  Bit Score: 114.63  E-value: 4.54e-32
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLT 80
Cdd:MTH00224 163 EWIWGGFAVDNATLNRFFSFHFLLPFAIMGATILHIMFLHQTGSNNPIGINADSARIPFHPYYSIKDALGYLIAILLLSL 242


                 ....*....
gi 67090368   81 LAFFSPNLL 89
Cdd:MTH00224 243 MVLFEPNLF 251
CYTB MTH00022
cytochrome b; Validated
 1-90 2.80e-30

cytochrome b; Validated


Pssm-ID: 164595 [Multi-domain]  Cd Length: 379  Bit Score: 109.79  E-value: 2.80e-30
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLT 80
Cdd:MTH00022 161 QWVWGGFSVSNATLNRFFSLHFLFPFILAFLVIVHLIYLHVDGSNNPIGLNSSVDKVSFHVYYTSKDWYGIVVLFFLLSF 240

                         90
                 ....*....|
gi 67090368   81 LAFFSPNLLG 90
Cdd:MTH00022 241 IVYFAPNLLG 250
CYTB MTH00053
cytochrome b; Provisional
 2-90 3.02e-30

cytochrome b; Provisional


Pssm-ID: 164624 [Multi-domain]  Cd Length: 381  Bit Score: 109.80  E-value: 3.02e-30
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    2 W*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLTL 81
Cdd:MTH00053 164 WVWGGFSVSNATLNRFYSLHYLLPFILAGLALVHLIALHEDGSNNPIGVRSDIDKIPFHYYYVLKDLYGAVILLIILSII 243


                 ....*....
gi 67090368   82 AFFSPNLLG 90
Cdd:MTH00053 244 VFLFPYSLG 252
CYTB MTH00033
cytochrome b; Provisional
 1-82 5.43e-25

cytochrome b; Provisional


Pssm-ID: 133672 [Multi-domain]  Cd Length: 383  Bit Score: 95.78  E-value: 5.43e-25
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLT 80
Cdd:MTH00033 159 EWIWGGFSVSNCTLNRFFSLHYLLPFVLVGLVLAHLLTLHEKGSNEPLGLVGLSDRTAFHVYFTIKDILGFLILFGVFVI 238


                 ..
gi 67090368   81 LA 82
Cdd:MTH00033 239 IG 240
QcrB/PetB COG1290
Cytochrome b subunit of the bc complex [Energy production and conversion];
1-88 4.92e-22

Cytochrome b subunit of the bc complex [Energy production and conversion];


Pssm-ID: 440901 [Multi-domain]  Cd Length: 393  Bit Score: 87.54  E-value: 4.92e-22
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368   1 EW*WGGFSVDNPTLTRFFALH-FLLPFLIAGITLIHLTFLHESGSNNPLGI----VSHCDKIPFHPYFSTKDILGFMLMF 75
Cdd:COG1290 173 TWLFGGEFPGDATLNRFFALHvLLLPALLLALVVLHLWLLHRHGHNNPPGPerkkTEKVDGVPFHPYYTVKDGFGFFVFL 252

                        90
                ....*....|...
gi 67090368  76 IPLLTLAFFSPNL 88
Cdd:COG1290 253 GVFALLAFFFPIN 265
CYTB MTH00046
cytochrome b; Validated
 5-89 3.37e-19

cytochrome b; Validated


Pssm-ID: 177121 [Multi-domain]  Cd Length: 355  Bit Score: 79.64  E-value: 3.37e-19
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    5 GGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIV-SHCDKIPFHPYFSTKDILGFMLMFIPLLTLAF 83
Cdd:MTH00046 157 GGFSVTGVTLVRVFSVHICLGFVILGLMVVHLFYLHKSGSSNPLFSSnGYSDVVYFHSYFTVKDLFLFMVVCSLLVFWLF 236


                 ....*.
gi 67090368   84 FSPNLL 89
Cdd:MTH00046 237 VSPDLV 242
Cytochrom_B_N_2 pfam13631
Cytochrome b(N-terminal)/b6/petB;
1-90 2.21e-17

Cytochrome b(N-terminal)/b6/petB;


Pssm-ID: 433364  Cd Length: 169  Bit Score: 71.89  E-value: 2.21e-17
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368     1 EW*WGGFSVDNPTLTRFFALHF-LLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLL 79
Cdd:pfam13631  77 WLLFGGPFPGTATIPRFYALHIlLLPGLILALIVAHLLLVEKHGQFPPPGTEKNVVGVPFWPVFAVKMLLFFLITVALLI 156

                          90
                  ....*....|.
gi 67090368    80 TLAFFSPNLLG 90
Cdd:pfam13631 157 GLAQINPIWLG 167
CYTB MTH00086
cytochrome b; Provisional
 1-90 7.66e-17

cytochrome b; Provisional


Pssm-ID: 177151 [Multi-domain]  Cd Length: 355  Bit Score: 73.05  E-value: 7.66e-17
                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 67090368    1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSNNPLGIVSHCDKIPFHPYFSTKDILGFMLMFIpLLT 80
Cdd:MTH00086 151 MWIWGGFGVSSATLKFFFVLHFLLPWGLLVLVLFHLIFLHSTGSTSSLYCHGDYDKICFGPEYWNKDAYNIIFWLV-FII 229

                         90
                 ....*....|
gi 67090368   81 LAFFSPNLLG 90
Cdd:MTH00086 230 FSLFYPFNLG 239
Cytochrome_b_N cd00284
Cytochrome b (N-terminus)/b6/petB: Cytochrome b is a subunit of cytochrome bc1, an 11-subunit ...
 1-45 1.04e-16

Cytochrome b (N-terminus)/b6/petB: Cytochrome b is a subunit of cytochrome bc1, an 11-subunit mitochondrial respiratory enzyme. Cytochrome b spans the mitochondrial membrane with 8 transmembrane helices (A-H) in eukaryotes. In plants and cyanobacteria, cytochrome b6 is analogous to eukaryote cytochrome b, containing two chains: helices A-D are encoded by the petB gene and helices E-H are encoded by the petD gene in these organisms. Cytochrome b/b6 contains two bound hemes and two ubiquinol/ubiquinone binding sites. The C-terminal portion of cytochrome b is described in a separate CD.


Pssm-ID: 238176  Cd Length: 200  Bit Score: 70.86  E-value: 1.04e-16
                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*
gi 67090368   1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESGSN 45
Cdd:cd00284 156 EWLWGGFSVDNATLTRFFALHFLLPFIIAVIVILHLLFLHEQGSS 200
Cytochrome_B pfam00033
Cytochrome b/b6/petB;
1-43 1.21e-12

Cytochrome b/b6/petB;


Pssm-ID: 306530  Cd Length: 189  Bit Score: 60.09  E-value: 1.21e-12
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|...
gi 67090368     1 EW*WGGFSVDNPTLTRFFALHFLLPFLIAGITLIHLTFLHESG 43
Cdd:pfam00033 147 EWIWGSFSVDQATLTRFFSLHFLLPFILAILMLLHLLFLHETG 189
cytochrome_b_C cd00290
Cytochrome b(C-terminus)/b6/petD: Cytochrome b is a subunit of cytochrome bc1, an 11-subunit ...
 46-90 3.05e-08

Cytochrome b(C-terminus)/b6/petD: Cytochrome b is a subunit of cytochrome bc1, an 11-subunit mitochondrial respiratory enzyme. Cytochrome b spans the mitochondrial membrane with 8 transmembrane helices (A-H) in eukaryotes. In plants and cyanobacteria, cytochrome b6 is analogous to eukaryote cytochrome b, containing two chains: helices A-D are encoded by the petB gene and helices E-H are encoded by the petD gene in these organisms. Cytochrome b/b6 contains two bound hemes and two ubiquinol/ubiquinone binding sites. The C-terminal domain is involved in forming the ubiquinol/ubiquinone binding sites, but not the heme binding sites. The N-terminal portion of cytochrome b, which contains both heme binding sites, is described in a separate CD.


Pssm-ID: 238179 [Multi-domain]  Cd Length: 147  Bit Score: 47.64  E-value: 3.05e-08
                        10        20        30        40
                ....*....|....*....|....*....|....*....|....*
gi 67090368  46 NPLGIVSHCDKIPFHPYFSTKDILGFMLMFIPLLTLAFFSPNLLG 90
Cdd:cd00290   1 NPLGLASDMDKISFHPYFWPKDLLGAFPILIIFMILVFYAPNLLG 45
PRK03735 PRK03735
cytochrome b6; Provisional
 5-48 3.96e-05

cytochrome b6; Provisional


Pssm-ID: 179639  Cd Length: 223  Bit Score: 40.08  E-value: 3.96e-05
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|....*
gi 67090368    5 GGFSVDNPTLTRFFALH-FLLPFLIAGITLIHLTFLHESGSNNPL 48
Cdd:PRK03735 179 GGEIVGAQTLTRFFAIHvFFLPWALAVLMLAHFLMIRKQGISGPL 223
petB CHL00070
cytochrome b6
 5-48 5.18e-05

cytochrome b6


Pssm-ID: 177009  Cd Length: 215  Bit Score: 39.70  E-value: 5.18e-05
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|....*
gi 67090368    5 GGFSVDNPTLTRFFALH-FLLPFLIAGITLIHLTFLHESGSNNPL 48
Cdd:CHL00070 171 GSVSVGQSTLTRFYSLHtFVLPLLTAVFMLMHFLMIRKQGISGPL 215
 
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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