Annotations: 2XLK

Crystal structure of the Csy4-crRNA complex, orthorhombic form

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	CRISPR-associated proteins	8052171	3001554	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	CRISPR-associated proteins	8052171	3001554	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Pyrid_oxidase_2	e2xlkB1	A: beta barrels	X: PBZ domain	H: PBZ domain	T: PBZ domain	F: Pyrid_oxidase_2	ECOD (v294.2)
A	Transket_pyr	e2xlkA1	A: beta barrels	X: beta-Grasp	H: Ubiquitin-related	T: Sulfite oxidase, middle catalytic domain	F: Transket_pyr	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.30.70.2540	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	CRISPR-associated endoribonuclease Cas6/Csy4	CATH (4.3.0)
A	3.30.70.2540	Alpha Beta	2-Layer Sandwich	Alpha-Beta Plaits	CRISPR-associated endoribonuclease Cas6/Csy4	CATH (4.3.0)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	CSY4 ENDORIBONUCLEASE	hydrolase activity catalytic activity endonuclease activity nuclease activity catalytic activity, acting on a nucleic acid RNA binding binding nucleic acid binding	biological process involved in interspecies interaction between organisms defense response to virus response to stimulus defense response response to other organism response to stress response to external stimulus response to external biotic stimulus response to virus response to biotic stimulus maintenance of CRISPR repeat elements chromosome organization primary metabolic process DNA metabolic process biological process involved in interspecies interaction between organisms defense response to virus response to stimulus defense response response to other organism response to stress response to external stimulus response to external biotic stimulus response to virus response to biotic stimulus maintenance of CRISPR repeat elements chromosome organization primary metabolic process DNA metabolic process maintenance of DNA repeat elements nucleic acid metabolic process cellular component organization nucleobase-containing compound metabolic process organelle organization cellular process metabolic process cellular component organization or biogenesis macromolecule metabolic process	-
C, D	5'-R(CPUPGPCPCPGPUPAPUPAPGPGPCPADGC)-3'	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR013396	CRISPR-associated endoribonuclease Cas6/Csy4, subtype I-F/YPEST	Family
A, B	IPR042564	CRISPR-associated endoribonuclease Cas6/Csy4, subtype I-F/YPEST superfamily	Homologous Superfamily

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.