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CATH Superfamily 2.102.10.10

Rieske [2Fe-2S] iron-sulphur domain

The name of this superfamily has been modified since the most recent official CATH+ release (v4_2_0). At the point of the last release, this superfamily was named:

"
Rieske [2Fe-2S] iron-sulphur domain
".

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 8185: Ubiquinol-cytochrome c reductase iron-sulfur subun...

There are 3 EC terms in this cluster

Please note: EC annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

Note: The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.

EC Term Annotations Evidence
Arsenate reductase (azurin). [EC: 1.20.9.1]
Arsenite + H(2)O + 2 oxidized azurin = arsenate + 2 reduced azurin + 2 H(+).
  • The enzyme also uses a c-type cytochrome or O(2) as acceptors.
  • Formerly EC 1.20.98.1.
 46 A0A045GW18 A0A062WEI8 A0A083W640 A0A089QRJ5 A0A0D6GLG6 A0A0D6IKI8 A0A0D8HQB5 A0A0E4A8J2 A0A0G4E3J1 A0A0H3LBW3
(36 more...)
Quinol--cytochrome-c reductase. [EC: 1.10.2.2]
Quinol + 2 ferricytochrome c = quinone + 2 ferrocytochrome c + 2 H(+).
  • The enzyme, often referred to as the cytochrome bc1 complex or complex III, is the third complex in the electron transport chain.
  • It is present in the mitochondria of all aerobic eukaryotes and in the inner membranes of most bacteria.
  • The mammalian enzyme contains cytochromes b-562, b-566 and C(1), and a 2-iron ferredoxin.
  • Depending on the organism and physiological conditions, the enzyme extrudes either two or four protons from the cytoplasmic to the non- cytoplasmic compartment (cf. EC 1.6.99.3).
 12 A0A0A1FRN0 A0A0H5CDE1 A0A0K3BIF6 A0A0N9YHP4 A0A117IFT0 A0A1J0UMX9 E0MZ13 F2RIB0 G7I0T0 N1LZU9
(2 more...)
Plastoquinol--plastocyanin reductase. [EC: 1.10.9.1]
Plastoquinol + 2 oxidized plastocyanin + 2 H(+)(Side 1) = plastoquinone + 2 reduced plastocyanin + 4 H(+)(Side 2).
  • Contains two b-type cytochromes, two c-type cytochromes (cn and f), and a [2Fe-2S] Rieske cluster.
  • The enzyme plays a key role in photosynthesis, transferring electrons from photosystem II (EC 1.10.3.9) to photosystem I (EC 1.97.1.12).
  • Cytochrome c-552 can act as acceptor instead of plastocyanin, but more slowly.
  • In chloroplasts, protons are translocated through the thylakoid membrane from the lumen to the stroma.
  • The mechanism occurs through the Q cycle as in EC 1.10.2.2 (complex III) and involves electron bifurcation.
  • Formerly EC 1.10.99.1.
 3 A0A0J6VP86 A0A0J6W6L9 A0A0J6YR21
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