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CATH Superfamily 3.90.25.70

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: 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 1: Fatty acid synthase subunit alpha

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
3-oxoacyl-[acyl-carrier-protein] reductase. [EC: 1.1.1.100]
(3R)-3-hydroxyacyl-[acyl-carrier-protein] + NADP(+) = 3-oxoacyl-[acyl- carrier-protein] + NADPH.
  • Exhibits a marked preference for [acyl-carrier-protein] derivatives over CoA derivatives as substrates.
 12 G8BAW7 N1NWL3 N1NWL3 P15368 P19097 P19097 P43098 P78615 Q10289 Q5AV00
(2 more...)
Beta-ketoacyl-[acyl-carrier-protein] synthase I. [EC: 2.3.1.41]
Acyl-[acyl-carrier-protein] + malonyl-[acyl-carrier-protein] = 3-oxoacyl- [acyl-carrier-protein] + CO(2) + [acyl-carrier-protein].
  • Responsible for the chain-elongation step of dissociated (type II) fatty-acid biosynthesis, i.e. the addition of two C atoms to the fatty-acid chain.
  • Escherichia coli mutants that lack this enzyme are deficient in unsaturated fatty acids.
  • Can use fatty acyl thioesters of ACP (C(2) to C(16)) as substrates, as well as fatty acyl thioesters of Co-A (C(4) to C(16)).
  • The substrate specificity is very similar to that of EC 2.3.1.179 with the exception that the latter enzyme is far more active with palmitoleoyl-ACP (C(16)-Delta(9)) as substrate, allowing the organism to regulate its fatty-acid composition with changes in temperature.
 12 G8BAW7 N1NWL3 N1NWL3 P15368 P19097 P19097 P43098 P78615 Q10289 Q5AV00
(2 more...)
Fatty-acyl-CoA synthase system. [EC: 2.3.1.86]
Acetyl-CoA + n malonyl-CoA + 2n NADPH = long-chain-acyl-CoA + n CoA + n CO(2) + 2n NADP(+).
  • The enzyme from yeasts (Ascomycota and Basidiomycota) is a multi- functional protein complex composed of two subunits.
  • One subunit catalyzes the reactions EC 1.1.1.100 and EC 2.3.1.41, while the other subunit catalyzes the reactions of EC 2.3.1.38, EC 2.3.1.39, EC 4.2.1.59, EC 1.3.1.10 and EC 1.1.1.279.
  • The enzyme differs from the animal enzyme (EC 2.3.1.85) in that the enoyl reductase domain requires FMN as a cofactor, and the ultimate product is an acyl-CoA (usually palmitoyl-CoA) instead of a free fatty acid.
 12 G8BAW7 N1NWL3 N1NWL3 P15368 P19097 P19097 P43098 P78615 Q10289 Q5AV00
(2 more...)
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