Structural Classification of Proteins

Family: Succinate dehydrogenase/Fumarate reductase transmembrane subunits (SdhC/FrdC and SdhD/FrdD)

: consists of two homologous non-identical subunits that form a heterodimer; may or may not contain heme groups

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
Family: Succinate dehydrogenase/Fumarate reductase transmembrane subunits (SdhC/FrdC and SdhD/FrdD) [81373]
consists of two homologous non-identical subunits that form a heterodimer; may or may not contain heme groups

Protein Domains:

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]
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]
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]
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]