Annotations: 4WJ0

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4wj0a_	Multi-domain proteins (alpha and beta)	CRISPR associated protein Cas1-like	CRISPR associated protein Cas1-like	automated matches	automated matches	(Pyrococcus horikoshii OT3 ) [TaxId: 70601 ],	SCOPe (2.08)
B	d4wj0b_	Multi-domain proteins (alpha and beta)	CRISPR associated protein Cas1-like	CRISPR associated protein Cas1-like	automated matches	automated matches	(Pyrococcus horikoshii OT3 ) [TaxId: 70601 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	CRISPR associated protein Cas1	8049654	4006578	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	CRISPR associated protein Cas1	8053178	3002164	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	CRISPR associated protein Cas1	8053178	3002164	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)
A	Cas_Cas1	e4wj0A1	A: alpha complex topology	X: Cas1 (From Topology)	H: Cas1 (From Topology)	T: Cas1	F: Cas_Cas1	ECOD (1.6)
B	Cas_Cas1	e4wj0B1	A: alpha complex topology	X: Cas1 (From Topology)	H: Cas1 (From Topology)	T: Cas1	F: Cas_Cas1	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.100.10.20	Alpha Beta	Ribosomal Protein L15	Chain: K	domain 2	CATH (4.3.0)
A	1.20.120.920	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	CRISPR-associated endonuclease Cas1, C-terminal domain	CATH (4.3.0)
B	3.100.10.20	Alpha Beta	Ribosomal Protein L15	Chain: K	domain 2	CATH (4.3.0)
B	1.20.120.920	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	CRISPR-associated endonuclease Cas1, C-terminal domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01867	CRISPR associated protein Cas1 (Cas_Cas1)	CRISPR associated protein Cas1	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	CRISPR-associated endonuclease Cas1	DNA endonuclease activity endonuclease activity catalytic activity, acting on DNA nuclease activity hydrolase activity, acting on ester bonds catalytic activity, acting on a nucleic acid hydrolase activity catalytic activity DNA nuclease activity DNA binding binding organic cyclic compound binding nucleic acid binding cation binding DNA endonuclease activity endonuclease activity catalytic activity, acting on DNA nuclease activity hydrolase activity, acting on ester bonds catalytic activity, acting on a nucleic acid hydrolase activity catalytic activity DNA nuclease activity DNA binding binding organic cyclic compound binding nucleic acid binding cation binding ion binding metal ion binding small molecule binding	biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response defense response to symbiont response to external stimulus response to biotic stimulus defense response to virus defense response to other organism response to stress response to external biotic stimulus response to virus maintenance of CRISPR repeat elements cellular metabolic process biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response defense response to symbiont response to external stimulus response to biotic stimulus defense response to virus defense response to other organism response to stress response to external biotic stimulus response to virus maintenance of CRISPR repeat elements cellular metabolic process chromosome organization cellular nitrogen compound metabolic process primary metabolic process DNA metabolic process maintenance of DNA repeat elements nucleic acid metabolic process cellular component organization nucleobase-containing compound metabolic process organic cyclic compound metabolic process organelle organization organic substance metabolic process heterocycle metabolic process nitrogen compound metabolic process cellular process metabolic process cellular component organization or biogenesis macromolecule metabolic process cellular aromatic compound metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR002729	CRISPR-associated protein Cas1	Family
A, B	IPR042206	CRISPR-associated endonuclease Cas1, C-terminal domain	Homologous Superfamily
A, B	IPR042211	CRISPR-associated endonuclease Cas1, N-terminal domain	Homologous Superfamily
A, B	IPR019858	CRISPR-associated protein Cas1, HMARI/TNEAP subtype	Family

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.