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 named:

"
Sulfite Reductase Hemoprotein, domain 1
".

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 3: Sulfite reductase [NADPH] hemoprotein beta-compone...

There are 2 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
Assimilatory sulfite reductase (NADPH). [EC: 1.8.1.2]
H(2)S + 3 NADP(+) + 3 H(2)O = sulfite + 3 NADPH.
  • The enzyme, which catalyzes the six-electron reduction of sulfite to sulfide, is involved in sulfate assimilation in bacteria and yeast.
  • Different from EC 1.8.99.5, which is involved in prokaryotic sulfur- based energy metabolism.
  • Formerly EC 1.8.99.1.
7004 A0A023VU52 A0A023VU52 A0A023VU52 A0A023VU52 A0A026V970 A0A026V970 A0A026V970 A0A026V970 A0A026V970 A0A026V970
(6994 more...)
Assimilatory sulfite reductase (ferredoxin). [EC: 1.8.7.1]
Hydrogen sulfide + 6 oxidized ferredoxin [iron-sulfur] cluster + 3 H(2)O = sulfite + 6 reduced ferredoxin [iron-sulfur] cluster + 6 H(+).
  • The enzyme participates in sulfate assimilation.
  • While it is usually found in cyanobacteria, plants and algae, it has also been reported in bacteria (cf. EC 1.8.1.2).
  • Formerly EC 1.8.99.1.
8 A0A178UPZ1 A0A178UPZ1 L8AG48 L8AG48 P72854 P72854 Q9LZ66 Q9LZ66
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