6R9R | pdb_00006r9r

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
E [auth C]	3.40.50.10640	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	SSO1389-like	CATH (utative)
D [auth A]	3.40.50.10640	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	SSO1389-like	CATH (utative)
C [auth B]	3.40.50.10640	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	SSO1389-like	CATH (utative)

Chains	Accession	Name	Description	Comments	Source
C [auth B], D [auth A], E [auth C]	PF22230	CRISPR system endoribonuclease Csx1, CARF domain (Csx1_CARF)	CRISPR system endoribonuclease Csx1, CARF domain	CRISPR system endoribonuclease Csx1 is a metal-independent, endoribonuclease that acts selectively on ssRNA and cleaves specifically after adenosines, as part of the type III-B CRISP-Cas system and it is homologous to Csm6 [1-3], sharing the same dom ...	CRISPR system endoribonuclease Csx1 is a metal-independent, endoribonuclease that acts selectively on ssRNA and cleaves specifically after adenosines, as part of the type III-B CRISP-Cas system and it is homologous to Csm6 [1-3], sharing the same domain domain architecture consisting of a CARF domain at the N-terminal that is relatively well conserved, and a HEPN nuclease domain at the C-terminal. This entry represents the CARF (CRISPR-associated Rossmann fold) domain, which binds and cleaves the cyclic oligoadenylate molecule (cA) that then activates the HEPN domain.	Domain