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CATH Superfamily 1.20.5.700

Single helix bin

The name of this superfamily has been modified since the most recent official CATH+ release (v4_3_0). At the point of the last release, this superfamily was named:

"
Single helix bin
".

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.

Superfamily EC Annotations

Note: the EC figure is not being displayed for this superfamily as there are more than 100 different EC terms.

There are 1 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
Plastoquinol--plastocyanin reductase. [EC: 7.1.1.6]
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 (c(n) 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 7.1.1.8 (complex III) and involves electron bifurcation.
  • Formerly EC 1.10.9.1 and EC 1.10.99.1.
 104 A0A089P8Z0 A0A089QPV8 A0A0A1VZH5 A0A0A1ZJJ8 A0A0A2ALK5 A0A0A2B4L2 A0A0D3GSA9 A0A0E0ED04 A0A0E0I292 A0A0E0Q9S7
(94 more...)