Structural Classification of Proteins

Superfamily: Fumarate reductase respiratory complex transmembrane subunits

: two distinct families: in one family the common fold is contained in a single-chain subunit, in the other it is formed by two chains
uperfamily

Lineage:

Root: scop
Class: Membrane and cell surface proteins and peptides [56835]
Does not include proteins in the immune system
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
Superfamily: Fumarate reductase respiratory complex transmembrane subunits [81343]
two distinct families: in one family the common fold is contained in a single-chain subunit, in the other it is formed by two chains
uperfamily

Families:

Fumarate reductase respiratory complex cytochrome b subunit, FrdC [56910] (1)
duplication: consists of two structural repeats; the heme-binding sites are related by pseudo two fold symmetry
1. Fumarate reductase respiratory complex cytochrome b subunit, FrdC [56911]
  1. Wolinella succinogenes [TaxId: 844] [56913] (8)
    1. 2bs2
      automatically matched to d1qlac_
      complexed with f3s, fad, fes, fmr, hem, lmt, na, sf4
      1. region c:1-254 [129035]
    2. 2bs2
      automatically matched to d1qlac_
      complexed with f3s, fad, fes, fmr, hem, lmt, na, sf4
      1. region f:1-254 [129041]
    3. 2bs3
      complexed with cit, f3s, fad, fes, hem, lmt, na, sf4
      1. region c:1-255 [145005]
    4. 2bs3
      automatically matched to 2BS3 C:1-255
      complexed with cit, f3s, fad, fes, hem, lmt, na, sf4
      1. region f:1-255 [145006]
    5. 1qlb
      1. chain c [43724]
      2. chain f [43725]
    6. 2bs4
      complexed with cit, dmw, f3s, fad, fes, hem, lmt, na, sf4
      1. region c:1-255 [145007]
    7. 2bs4
      automatically matched to 2BS4 C:1-255
      complexed with cit, dmw, f3s, fad, fes, hem, lmt, na, sf4
      1. region f:1-255 [145008]
    8. 1e7p
      complexed with f3s, fad, fes, fs4, hem, lmt, mla, na; mutant
      1. chain c [59352]
      2. chain f [59358]
      3. chain i [59364]
      4. chain l [59370]
Succinate dehydrogenase/Fumarate reductase transmembrane subunits (SdhC/FrdC and SdhD/FrdD) [81373] (4)
consists of two homologous non-identical subunits that form a heterodimer; may or may not contain heme groups
1. Succinate dehydrogenase subunit SdhC [82870]
  Cytochrome b556 subunit
  1. Escherichia coli [TaxId: 562] [82871] (3)
    1. 1nek
      complexed with ca, cdn, eph, f3s, fad, fes, fs4, hem, oaa, uq2
      1. chain c [80431]
    2. 1nen
      complexed with ca, cdn, dnt, eph, f3s, fad, fes, fs4, hem, oaa
      1. chain c [80438]
    3. 2acz
      automatically matched to d1nekc_
      complexed with at5, cdn, f3s, fad, fes, heb, oaa, sf4
      1. region c:1-129 [126566]
2. Succinate dehydrogenase subunit SdhD [82872]
  membrane anchor protein
  1. Escherichia coli [TaxId: 562] [82873] (3)
    1. 1nek
      complexed with ca, cdn, eph, f3s, fad, fes, fs4, hem, oaa, uq2
      1. chain d [80432]
    2. 1nen
      complexed with ca, cdn, dnt, eph, f3s, fad, fes, fs4, hem, oaa
      1. chain d [80439]
    3. 2acz
      automatically matched to d1nekd_
      complexed with at5, cdn, f3s, fad, fes, heb, oaa, sf4
      1. region d:3-115 [126567]
3. Fumarate reductase subunit FrdC [81370]
  1. Escherichia coli [TaxId: 562] [81369] (7)
    is not known to bind heme
    1. 1kf6
      complexed with 1pe, act, ce1, f3s, fad, fes, fs4, hqo, k, oaa
      1. chain c [72399]
      2. chain o [72406]
    2. 1l0v
      complexed with ce1, f3s, fad, fes, fs4, mq7, oaa
      1. chain c [73417]
      2. chain o [73424]
    3. 1kfy
      complexed with brs, ce1, f3s, fad, fes, fs4, oaa
      1. chain c [72432]
      2. chain o [72439]
    4. 3cir
      automatically matched to d1kf6c_
      complexed with f3s, fad, fes, sf4; mutant
      1. region c:1-130 [156684]
    5. 3cir
      automatically matched to d1kf6c_
      complexed with f3s, fad, fes, sf4; mutant
      1. region o:1-130 [156691]
    6. 2b76
      automatically matched to d1kf6c_
      complexed with f3s, fad, fes, flc, mq7, sf4; mutant
      1. region c:1-130 [128014]
    7. 2b76
      automatically matched to d1kf6c_
      complexed with f3s, fad, fes, flc, mq7, sf4; mutant
      1. region o:1-130 [128021]
4. Fumarate reductase subunit FrdD [81372]
  1. Escherichia coli [TaxId: 562] [81371] (7)
    is not known to bind heme
    1. 1kf6
      complexed with 1pe, act, ce1, f3s, fad, fes, fs4, hqo, k, oaa
      1. chain d [72400]
      2. chain p [72407]
    2. 1l0v
      complexed with ce1, f3s, fad, fes, fs4, mq7, oaa
      1. chain d [73418]
      2. chain p [73425]
    3. 1kfy
      complexed with brs, ce1, f3s, fad, fes, fs4, oaa
      1. chain d [72433]
      2. chain p [72440]
    4. 3cir
      automatically matched to d1kf6d_
      complexed with f3s, fad, fes, sf4; mutant
      1. region d:0-118 [156685]
    5. 3cir
      automatically matched to d1kf6d_
      complexed with f3s, fad, fes, sf4; mutant
      1. region p:0-118 [156692]
    6. 2b76
      automatically matched to d1kf6d_
      complexed with f3s, fad, fes, flc, mq7, sf4; mutant
      1. region d:0-118 [128015]
    7. 2b76
      automatically matched to d1kf6d_
      complexed with f3s, fad, fes, flc, mq7, sf4; mutant
      1. region p:0-118 [128022]