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Conserved domains on  [gi|2747345012|gb|XCA45971|]
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cytochrome b, partial (mitochondrion) [Rousettus aegyptiacus]

Protein Classification

cytochrome b( domain architecture ID 999999)

cytochrome b is a component of the ubiquinol-cytochrome c reductase complex (complex III or cytochrome b-c1 complex) that is part of the mitochondrial respiratory chain; contributes to the generation of a proton gradient across the mitochondrial membrane that is then used for ATP synthesis

CATH:  1.20.810.10
Gene Ontology:  GO:0009055|GO:0046872|GO:0022904|GO:0005743|GO:0020037
PubMed:  2509716|8329437
SCOP:  4002208

Graphical summary

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List of domain hits

 Name Accession Description Interval E-value
CYTB super family cl31797
cytochrome b; Provisional
 1-116 6.86e-77

cytochrome b; Provisional


The actual alignment was detected with superfamily member MTH00100:

Pssm-ID: 177162 [Multi-domain]  Cd Length: 379  Bit Score: 231.45  E-value: 6.86e-77
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00100  161 VEWIWGGFSVDKATLTRFFAFHFILPFIITALAMVHLLFLHETGSNNPSGIPSDSDKIPFHPYYTIKDILGLLLLILTLM 240

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00100  241 LLVLFSPDLLGDPDNYTPANPLNTPPHIKPEWYFLF 276
 
Name Accession Description Interval E-value
CYTB MTH00100
cytochrome b; Provisional
 1-116 6.86e-77

cytochrome b; Provisional


Pssm-ID: 177162 [Multi-domain]  Cd Length: 379  Bit Score: 231.45  E-value: 6.86e-77
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00100  161 VEWIWGGFSVDKATLTRFFAFHFILPFIITALAMVHLLFLHETGSNNPSGIPSDSDKIPFHPYYTIKDILGLLLLILTLM 240

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00100  241 LLVLFSPDLLGDPDNYTPANPLNTPPHIKPEWYFLF 276
QcrB/PetB COG1290
Cytochrome b subunit of the bc complex [Energy production and conversion];
1-116 1.85e-35

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


Pssm-ID: 440901 [Multi-domain]  Cd Length: 393  Bit Score: 124.90  E-value: 1.85e-35
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFH-FLLPFIIAALVMVHLLFLHETGSNNPTGI----PSDMDMIPFHPYHTIKDALGTLIM 75
Cdd:COG1290   172 VTWLFGGEFPGDATLNRFFALHvLLLPALLLALVVLHLWLLHRHGHNNPPGPerkkTEKVDGVPFHPYYTVKDGFGFFVF 251

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|.
gi 2747345012  76 LLVLLTLVLFSPDllGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:COG1290   252 LGVFALLAFFFPI--NPPPNYGPANPLATPAHIQPDWYFLP 290
cytochrome_b_C cd00290
Cytochrome b(C-terminus)/b6/petD: Cytochrome b is a subunit of cytochrome bc1, an 11-subunit ...
 47-116 1.13e-20

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: 80.77  E-value: 1.13e-20
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012  47 NPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLLTLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:cd00290     1 NPLGLASDMDKISFHPYFWPKDLLGAFPILIIFMILVFYAPNLLGHPDNGIPANPLATPLHILPEWYFLP 70
Cytochrome_B pfam00033
Cytochrome b/b6/petB;
1-44 3.61e-18

Cytochrome b/b6/petB;


Pssm-ID: 306530  Cd Length: 189  Bit Score: 75.50  E-value: 3.61e-18
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETG 44
Cdd:pfam00033 146 VEWIWGSFSVDQATLTRFFSLHFLLPFILAILMLLHLLFLHETG 189
 
Name Accession Description Interval E-value
CYTB MTH00100
cytochrome b; Provisional
 1-116 6.86e-77

cytochrome b; Provisional


Pssm-ID: 177162 [Multi-domain]  Cd Length: 379  Bit Score: 231.45  E-value: 6.86e-77
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00100  161 VEWIWGGFSVDKATLTRFFAFHFILPFIITALAMVHLLFLHETGSNNPSGIPSDSDKIPFHPYYTIKDILGLLLLILTLM 240

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00100  241 LLVLFSPDLLGDPDNYTPANPLNTPPHIKPEWYFLF 276
CYTB MTH00119
cytochrome b; Provisional
 1-116 1.36e-67

cytochrome b; Provisional


Pssm-ID: 214425 [Multi-domain]  Cd Length: 380  Bit Score: 207.83  E-value: 1.36e-67
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00119  162 VEWIWGGFSVDNPTLTRFFALHFLLPFLIAGLTLIHLLFLHETGSNNPLGLNSNTDKIPFHPYFSYKDLLGLTLMLTLLL 241

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00119  242 TLALFSPNLLGDPENFTPANPLVTPPHIKPEWYFLF 277
CYTB MTH00131
cytochrome b; Provisional
 1-116 1.10e-66

cytochrome b; Provisional


Pssm-ID: 177189 [Multi-domain]  Cd Length: 380  Bit Score: 205.27  E-value: 1.10e-66
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00131  161 VQWIWGGFSVDNATLTRFFAFHFLFPFVIAAATILHLLFLHETGSNNPLGLNSDADKISFHPYFSYKDLLGFAILLLALT 240

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00131  241 SLALFSPNLLGDPDNFTPANPLVTPPHIKPEWYFLF 276
CYTB MTH00156
cytochrome b; Provisional
 1-116 3.92e-64

cytochrome b; Provisional


Pssm-ID: 214440 [Multi-domain]  Cd Length: 356  Bit Score: 198.08  E-value: 3.92e-64
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00156  151 VQWIWGGFSVDNATLTRFFTFHFLLPFIILAMVMIHLLFLHQTGSNNPLGLNSNIDKIPFHPYFTFKDLVGFIIMLMLLI 230

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00156  231 LLTLINPYLLGDPENFIPANPLVTPVHIQPEWYFLF 266
CYTB MTH00074
cytochrome b; Provisional
 1-116 3.49e-63

cytochrome b; Provisional


Pssm-ID: 177145 [Multi-domain]  Cd Length: 380  Bit Score: 196.44  E-value: 3.49e-63
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00074  162 VQWIWGGFSVDKATLTRFFAFHFLLPFLIAGASIIHLLFLHETGSNNPTGLNSNPDKVPFHPYFSYKDLLGFLIMLTALA 241

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00074  242 LLSLFSPNLLGDPDNFTPANPLVTPPHIQPEWYFLF 277
CYTB MTH00191
cytochrome b; Provisional
 1-116 3.62e-63

cytochrome b; Provisional


Pssm-ID: 177239 [Multi-domain]  Cd Length: 365  Bit Score: 195.90  E-value: 3.62e-63
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00191  158 VQWLWGGFSVDNATLTRFFTFHFLLPFLIAALSLIHLLFLHETGSNNPLGLNSDSDKIPFHPYFSYKDILGFFILLFLLL 237

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00191  238 FLVLFSPNLLGDPENFIPANPLVTPVHIKPEWYFLF 273
CYTB MTH00145
cytochrome b; Provisional
 1-116 4.88e-60

cytochrome b; Provisional


Pssm-ID: 177203 [Multi-domain]  Cd Length: 379  Bit Score: 188.19  E-value: 4.88e-60
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00145  162 VEWVWGGFSVGNATLKRFFSLHFLLPFVILGLSVLHLLFLHETGSNNPLGLDSDGDKVPFHPYYTIKDLVGFVVLLFLLV 241

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00145  242 FLVLFFPNLLGDPENFIPANPMVTPVHIQPEWYFLF 277
CYTB MTH00016
cytochrome b; Validated
 1-116 1.02e-57

cytochrome b; Validated


Pssm-ID: 177102 [Multi-domain]  Cd Length: 378  Bit Score: 182.18  E-value: 1.02e-57
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00016  162 VQWLWGGFSVDNATLTRFFALHFLLPFVIAALSMIHLLFLHQTGSNNPLGVNSNSDKVPFHPYYTSKDIVGFIVMLFLLL 241

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00016  242 SVVLLWPNILGDPENFIPANPLVTPTHIKPEWYFLW 277
CYTB MTH00034
cytochrome b; Validated
 1-116 7.39e-57

cytochrome b; Validated


Pssm-ID: 177109 [Multi-domain]  Cd Length: 379  Bit Score: 180.29  E-value: 7.39e-57
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00034  161 VQWIWGGFSVDNATLTRFFAFHFLFPFIIAALSIIHLLFLHQTGSNNPTGLNSNYDKVPFHTYFTTKDLVGFLILFAALS 240

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00034  241 SLALLFPTALNDPENFIPANPLVTPPHIQPEWYFLF 276
CYTB MTH00224
cytochrome b; Provisional
 1-116 1.16e-48

cytochrome b; Provisional


Pssm-ID: 164767 [Multi-domain]  Cd Length: 379  Bit Score: 158.93  E-value: 1.16e-48
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00224  162 VEWIWGGFAVDNATLNRFFSFHFLLPFAIMGATILHIMFLHQTGSNNPIGINADSARIPFHPYYSIKDALGYLIAILLLS 241

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00224  242 LMVLFEPNLFTDPENFLMANPLVTPIHIKPEWYFLW 277
CYTB MTH00053
cytochrome b; Provisional
 1-116 3.55e-46

cytochrome b; Provisional


Pssm-ID: 164624 [Multi-domain]  Cd Length: 381  Bit Score: 152.55  E-value: 3.55e-46
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00053  162 VRWVWGGFSVSNATLNRFYSLHYLLPFILAGLALVHLIALHEDGSNNPIGVRSDIDKIPFHYYYVLKDLYGAVILLIILS 241

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00053  242 IIVFLFPYSLGDAENFKQANPLVTPVHIKPEWYFLF 277
CYTB MTH00022
cytochrome b; Validated
 1-116 1.40e-45

cytochrome b; Validated


Pssm-ID: 164595 [Multi-domain]  Cd Length: 379  Bit Score: 151.01  E-value: 1.40e-45
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00022  160 VQWVWGGFSVSNATLNRFFSLHFLFPFILAFLVIVHLIYLHVDGSNNPIGLNSSVDKVSFHVYYTSKDWYGIVVLFFLLS 239

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00022  240 FIVYFAPNLLGDPENFIQANSLVTPVHIQPEWYFLF 275
QcrB/PetB COG1290
Cytochrome b subunit of the bc complex [Energy production and conversion];
1-116 1.85e-35

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


Pssm-ID: 440901 [Multi-domain]  Cd Length: 393  Bit Score: 124.90  E-value: 1.85e-35
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFH-FLLPFIIAALVMVHLLFLHETGSNNPTGI----PSDMDMIPFHPYHTIKDALGTLIM 75
Cdd:COG1290   172 VTWLFGGEFPGDATLNRFFALHvLLLPALLLALVVLHLWLLHRHGHNNPPGPerkkTEKVDGVPFHPYYTVKDGFGFFVF 251

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|.
gi 2747345012  76 LLVLLTLVLFSPDllGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:COG1290   252 LGVFALLAFFFPI--NPPPNYGPANPLATPAHIQPDWYFLP 290
CYTB MTH00033
cytochrome b; Provisional
 1-116 1.63e-33

cytochrome b; Provisional


Pssm-ID: 133672 [Multi-domain]  Cd Length: 383  Bit Score: 119.66  E-value: 1.63e-33
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00033  158 VEWIWGGFSVSNCTLNRFFSLHYLLPFVLVGLVLAHLLTLHEKGSNEPLGLVGLSDRTAFHVYFTIKDILGFLILFGVFV 237

                          90       100       110
                  ....*....|....*....|....*....|....*...
gi 2747345012  81 TLVLFS--PDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00033  238 IIGIEPriETLLQDPENFIQANPLVTPVHIQPEWYFLF 275
CYTB MTH00086
cytochrome b; Provisional
 1-116 7.58e-33

cytochrome b; Provisional


Pssm-ID: 177151 [Multi-domain]  Cd Length: 355  Bit Score: 117.35  E-value: 7.58e-33
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGtLIMLLVLL 80
Cdd:MTH00086  150 VMWIWGGFGVSSATLKFFFVLHFLLPWGLLVLVLFHLIFLHSTGSTSSLYCHGDYDKICFGPEYWNKDAYN-IIFWLVFI 228

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00086  229 IFSLFYPFNLGDPEMFIEADPMMSPVHIVPEWYFLF 264
CYTB MTH00046
cytochrome b; Validated
 2-116 1.01e-29

cytochrome b; Validated


Pssm-ID: 177121 [Multi-domain]  Cd Length: 355  Bit Score: 108.92  E-value: 1.01e-29
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   2 EWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSNNPTGIPSDM-DMIPFHPYHTIKDALGTLIMLLVLL 80
Cdd:MTH00046  153 KYIVGGFSVTGVTLVRVFSVHICLGFVILGLMVVHLFYLHKSGSSNPLFSSNGYsDVVYFHSYFTVKDLFLFMVVCSLLV 232

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2747345012  81 TLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:MTH00046  233 FWLFVSPDLVLDIEAYLEADPLVTPVSIKPEWYFLA 268
cytochrome_b_C cd00290
Cytochrome b(C-terminus)/b6/petD: Cytochrome b is a subunit of cytochrome bc1, an 11-subunit ...
 47-116 1.13e-20

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: 80.77  E-value: 1.13e-20
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012  47 NPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVLLTLVLFSPDLLGDPDNYIPANPLNTPPHIKPEWYFLF 116
Cdd:cd00290     1 NPLGLASDMDKISFHPYFWPKDLLGAFPILIIFMILVFYAPNLLGHPDNGIPANPLATPLHILPEWYFLP 70
Cytochrome_b_N cd00284
Cytochrome b (N-terminus)/b6/petB: Cytochrome b is a subunit of cytochrome bc1, an 11-subunit ...
 1-46 7.22e-20

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: 80.10  E-value: 7.22e-20
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*.
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETGSN 46
Cdd:cd00284   155 VEWLWGGFSVDNATLTRFFALHFLLPFIIAVIVILHLLFLHEQGSS 200
Cytochrome_B pfam00033
Cytochrome b/b6/petB;
1-44 3.61e-18

Cytochrome b/b6/petB;


Pssm-ID: 306530  Cd Length: 189  Bit Score: 75.50  E-value: 3.61e-18
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHFLLPFIIAALVMVHLLFLHETG 44
Cdd:pfam00033 146 VEWIWGSFSVDQATLTRFFSLHFLLPFILAILMLLHLLFLHETG 189
Cytochrom_B_N_2 pfam13631
Cytochrome b(N-terminal)/b6/petB;
1-93 8.00e-17

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


Pssm-ID: 433364  Cd Length: 169  Bit Score: 71.50  E-value: 8.00e-17
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFHF-LLPFIIAALVMVHLLFLHETGSNNPTGIPSDMDMIPFHPYHTIKDALGTLIMLLVL 79
Cdd:pfam13631  76 VWLLFGGPFPGTATIPRFYALHIlLLPGLILALIVAHLLLVEKHGQFPPPGTEKNVVGVPFWPVFAVKMLLFFLITVALL 155

                          90
                  ....*....|....
gi 2747345012  80 LTLVLFSPDLLGDP 93
Cdd:pfam13631 156 IGLAQINPIWLGGP 169
Cytochrom_B_C pfam00032
Cytochrome b(C-terminal)/b6/petD;
98-116 8.99e-08

Cytochrome b(C-terminal)/b6/petD;


Pssm-ID: 459640 [Multi-domain]  Cd Length: 101  Bit Score: 46.32  E-value: 8.99e-08
                          10
                  ....*....|....*....
gi 2747345012  98 PANPLNTPPHIKPEWYFLF 116
Cdd:pfam00032   1 PANPLVTPAHIVPEWYFLP 19
petB CHL00070
cytochrome b6
 1-48 7.41e-06

cytochrome b6


Pssm-ID: 177009  Cd Length: 215  Bit Score: 42.79  E-value: 7.41e-06
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*....
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFH-FLLPFIIAALVMVHLLFLHETGSNNP 48
Cdd:CHL00070  166 VELLRGSVSVGQSTLTRFYSLHtFVLPLLTAVFMLMHFLMIRKQGISGP 214
PRK03735 PRK03735
cytochrome b6; Provisional
 1-48 9.69e-06

cytochrome b6; Provisional


Pssm-ID: 179639  Cd Length: 223  Bit Score: 42.78  E-value: 9.69e-06
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*....
gi 2747345012   1 VEWIWGGFSVDKATLTRFFAFH-FLLPFIIAALVMVHLLFLHETGSNNP 48
Cdd:PRK03735  174 KTLLRGGEIVGAQTLTRFFAIHvFFLPWALAVLMLAHFLMIRKQGISGP 222
 
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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