Structural Classification of Proteins
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Family: Cytochrome b of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)

a part (domain) of a larger mitochondrial cytochrome b subunit, separate subunit in plants and cyanobacteria

Lineage:

  1. Root: scop
  2. Class: Membrane and cell surface proteins and peptides [56835]
    Does not include proteins in the immune system
  3. Fold: Heme-binding four-helical bundle [81344]
    core: four transmembrane helices, up-and-down bundle, binds one or two heme groups in between the helices
  4. Superfamily: Transmembrane di-heme cytochromes [81342]
    Three of the four heme-ligands are conserved between the two families; both heme groups bind similarly but not identically
    link to SUPERFAMILY database - Superfamily
  5. Family: Cytochrome b of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) [81642]
    a part (domain) of a larger mitochondrial cytochrome b subunit, separate subunit in plants and cyanobacteria

Protein Domains:

  1. Mitochondrial cytochrome b subunit, N-terminal domain [81641]
    also includes extra transmembrane (linker) helix absent in plants and cyanobacteria subunits
    1. Cow (Bos taurus) [TaxId: 9913] [81638] (17)
      SQ P00157
      1. 1ppj picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with any, azi, bhg, cdl, fes, gol, hec, hem, pee, po4, sma
        1. region c:15-260 [104257] picpiclink
        2. region p:15-260 [104272] picpiclink
      2. 1pp9 picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with azi, bhg, cdl, fes, gol, hec, hem, pee, po4, sma, uq
        1. region c:15-260 [104227] picpiclink
        2. region p:15-260 [104242] picpiclink
      3. 2fyu picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        automatically matched to d1be3c3
        complexed with fdn, fes, hem
        1. region c:2-260 [134397] picpiclink
      4. 1ntm picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with fes, hem
        1. region c:2-260 [92126] picpiclink
      5. 1ntz picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with fes, hem, uq2
        1. region c:2-260 [92154] picpiclink
      6. 1l0l picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with fes, fmx, hem
        1. region c:3-260 [84487] picpiclink
      7. 1sqx picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        automatically matched to d1be3c3
        complexed with fes, hem, sma, uq2
        1. region c:2-260 [119040] picpiclink
      8. 1ntk picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with ay1, fes, hem
        1. region c:2-260 [92110] picpiclink
      9. 1l0n picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with fes, hem
        1. region c:3-260 [84503] picpiclink
      10. 1sqb picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with azo, fes, hem
        1. region c:2-260 [105895] picpiclink
      11. 1sqv picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        automatically matched to d1be3c3
        complexed with fes, hem, uhd, uq2
        1. region c:2-260 [119025] picpiclink
      12. 1sqp picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        automatically matched to d1be3c3
        complexed with cdl, fes, hem, myx, pee, plx
        1. region c:2-260 [119000] picpiclink
      13. 1sqq picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        automatically matched to d1be3c3
        complexed with fes, hem, ost, uq2
        1. region c:2-260 [119012] picpiclink
      14. 1nu1 picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with fes, hem, qno
        1. region c:2-260 [92172] picpiclink
      15. 1be3 picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with fes, hec, hem
        1. region c:1-260 [75806] picpiclink
      16. 1bgy picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with fes, hec, hem
        1. region c:1-260 [75808] picpiclink
        2. region o:1-260 [75810] picpiclink
      17. 1qcr picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with hem
        1. region c:2-260 [75932] picpiclink
    2. Chicken (Gallus gallus) [TaxId: 9031] [81639] (5)
      1. 1bcc picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with bog, fes, hem, pee, u10
        1. region c:2-261 [75804] picpiclink
      2. 2bcc picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with bog, fes, hem, pee, sig, u10
        1. region c:2-261 [75988] picpiclink
      3. 3cwb picpicxrefxref
        automatically matched to d1bccc3
        complexed with azi, bog, cdl, fes, hec, hem, icx, pee, unl, uq
        1. region c:2-261 [157046] picpiclink
      4. 3cwb picpicxrefxref
        automatically matched to d1bccc3
        complexed with azi, bog, cdl, fes, hec, hem, icx, pee, unl, uq
        1. region p:2-261 [157048] picpiclink
      5. 3bcc picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with amy, fes, hem, sig
        1. region c:2-261 [75999] picpiclink
    3. Baker's yeast (Saccharomyces cerevisiae) [TaxId: 4932] [81640] (9)
      1. 3cx5 picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        automatically matched to d1ezvc3
        complexed with 6ph, 7ph, 8pe, 9pe, cn3, cn5, fes, hem, m3l, sma, suc, umq
        1. region c:1-261 [157081] picpiclink
      2. 3cx5 picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        automatically matched to d1ezvc3
        complexed with 6ph, 7ph, 8pe, 9pe, cn3, cn5, fes, hem, m3l, sma, suc, umq
        1. region n:1-261 [157097] picpiclink
      3. 1kb9 picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with cdl, fes, hem, pcf, pef, pie, sma, umq, uq6
        1. region c:1-261 [77316] picpiclink
      4. 2ibz picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        automatically matched to d1ezvc3
        complexed with fes, hem, sma, uq6
        1. region c:1-261 [137220] picpiclink
      5. 1ezv picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with fes, hem, sma, uq6
        1. region c:1-261 [75834] picpiclink
      6. 3cxh picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        automatically matched to d1ezvc3
        complexed with 6ph, 7ph, 8pe, 9pe, cn6, fes, hem, m3l, sma, suc, umq
        1. region c:1-261 [157114] picpiclink
      7. 3cxh picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        automatically matched to d1ezvc3
        complexed with 6ph, 7ph, 8pe, 9pe, cn6, fes, hem, m3l, sma, suc, umq
        1. region n:1-261 [157130] picpiclink
      8. 1p84 picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with 3pe, 3ph, cdl, dbt, fes, hem, pc1, umq, uq6
        1. region c:1-261 [87855] picpiclink
      9. 1kyo picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with fes, hem, m3l, sma
        1. region c:1-261 [75905] picpiclink
        2. region n:1-261 [75907] picpiclink
  2. Cytochrome b6 subunit of the cytochrome b6f complex [103498]
    1. Mastigocladus laminosus [TaxId: 83541] [103499] (6)
      1. 2e74 picpicxrefxrefxrefxrefxrefxrefxref
        automatically matched to d1vf5a_
        complexed with bcr, cd, cla, fes, hem, opc, sqd, umq
        1. region a:13-214 [132048] picpiclink
      2. 1vf5 picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with bcr, cla, fes, hem, opc, pl9, tds
        1. chain a [100578] picpiclink
        2. chain n [100589] picpiclink
      3. 2e76 picpicxrefxrefxrefxrefxrefxrefxref
        automatically matched to d1vf5a_
        complexed with bcr, cd, cla, fes, hem, opc, sqd, tds, umq
        1. region a:13-214 [132058] picpiclink
      4. 2e75 picpicxrefxrefxrefxrefxrefxrefxref
        automatically matched to d1vf5a_
        complexed with bcr, cd, cla, fes, hem, opc, qno, sqd, umq
        1. region a:13-214 [132053] picpiclink
      5. 2d2c picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        automatically matched to d1vf5a_
        complexed with bcr, bnt, cla, fes, hec, hem, opc
        1. region a:13-214 [131161] picpiclink
      6. 2d2c picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        automatically matched to d1vf5a_
        complexed with bcr, bnt, cla, fes, hec, hem, opc
        1. region n:13-214 [131167] picpiclink
    2. Chlamydomonas reinhardtii [TaxId: 3055] [103500] (1)
      1. 1q90 picpicxrefxrefxrefxrefxrefxrefxrefxrefxrefxref
        complexed with bcr, cl1, fes, hem, lfa, lmg, sqd, tds; mutant
        1. chain b [96241] picpiclink
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MRC site Generated from scop database 1.75 with scopm 1.101 on Wed Jun 3 10:42:06 2009
Copyright © 1994-2009 The scop authors / scop@mrc-lmb.cam.ac.uk