Homologous Superfamily

RmlC-like jelly roll fold (IPR014710)

Short name: RmlC-like_jellyroll


This entry represents domains with a double-stranded beta-helix jelly roll fold such as that found in RmlC (deoxythymidine diphosphates-4-dehydrorhamnose 3,5-epimerase; EC:, a dTDP-sugar isomerase enzyme involved in the synthesis of L-rhamnose, a saccharide required for the virulence of some pathogenic bacteria [PMID: 10802738].

Other protein families contain domains that share this jelly roll fold, including glucose-6-phosphate isomerase (EC:; germin, a metal-binding protein with oxalate oxidase and superoxide dismutases activities [PMID: 11062559]; auxin-binding protein [PMID: 12065401]; seed storage protein 7S [PMID: 11124907]; acireductone dioxygenase [PMID: 12402029]; as well as three proteins that have metal-binding sites similar to that of germine, namely quercetin 2,3-dioxygenase (EC: [PMID: 11839311], phosphomannose isomerase (EC: [PMID: 8612079] and homogentisate dioxygenase (EC: [PMID: 10876237], the last three sharing a 2-domain fold with storage protein 7s.

The cAMP-binding domains found in the cAMP receptor protein (CRP) family display a similar double-stranded beta-helix jelly roll fold. These proteins include CooA, a CO-sensing haem protein that functions as a transcription activator [PMID: 10196160], and the CnbD (cyclic nucleotide binding domain) of the HCN cation channel in which cAMP binding modulates gating of the channel [PMID: 16500960].

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.