DsrC, the gamma subunit of dissimilatory sulfite reductase superfamily

SCOP classification

• Root: SCOP hierarchy in SUPERFAMILY [ 0] (11)
• Class: Alpha and beta proteins (a+b) [ 53931] (376)
• Fold: DsrC, the gamma subunit of dissimilatory sulfite reductase [ 69720]
• Superfamily: DsrC, the gamma subunit of dissimilatory sulfite reductase [ 69721]
• Families: DsrC, the gamma subunit of dissimilatory sulfite reductase [ 69722]

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Superfamily statistics

	Genomes (607)	Uniprot 2018_03 genome	PDB chains (SCOP 1.75)
Domains	694	5,176	2
Proteins	690	5,161	2

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Functional annotation

• General category: Metabolism
• Detailed category: Redox

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InterPro annotation

• Cross references: IPR007453 SSF69721 Protein matches
• Abstract:

  Family member has been observed to co-purify with Desulphovibrio vulgaris dissimilatory sulphite reductase [1555572], and many members of this family are annotated as the third (gamma) subunit of dissimilatory sulphite reductase. However, this protein appears to be only loosely associated to the sulphite reductase, which suggests that DsrC may not be an integral part of the dissimilatory sulphite reductase. Members of this family are found in organisms such as Escherichia coli and Haemophilus influenzae which do not contain dissimilatory sulphite reductases but can synthesise assimilatory sirohaem sulphite and nitrite reductases. It is speculated that DsrC may be involved in the assembly, folding or stabilisation of sirohaem proteins [9493389]. The strictly conserved cysteine in the C terminus suggests that DsrC may have a catalytic function in the metabolism of sulphur compounds [9695921].

InterPro database

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