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CATH Superfamily 3.50.50.100

The name of this superfamily has been modified since the most recent official CATH+ release (v4_4_0). At the point of the last release, this superfamily was: waiting to be named.

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 17: Sulfide-quinone reductase

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
Bacterial sulfide:quinone reductase. [EC: 1.8.5.4]
n sulfide + n quinone = polysulfide + n quinol.
  • Ubiquinone, plastoquinone or menaquinone can act as acceptor in different species.
  • This enzyme catalyzes the formation of sulfur globules.
  • It repeats the catalytic cycle without releasing the product, producing a polysulfide of up to 10 sulfur atoms.
  • The reaction stops when the maximum length of the polysulfide that can be accommodated in the sulfide oxidation pocket is achieved.
  • The enzyme also plays an important role in anoxygenic bacterial photosynthesis.
  • Cf. EC 1.8.5.8.
 1 O67931
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