Annotations: 9P11

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C [auth A], D [auth B]	PF21384	CRISPR-associated nuclease/helicase Cas3, I-F/YPEST, Cas2 domain (Cas3_I-F_Cas2)	CRISPR-associated nuclease/helicase Cas3, I-F/YPEST, Cas2 domain	This domain is found at the N-terminal end of CRISPR-associated nuclease/helicase Cas3 subtype I-F/YPEST from Pseudomonas aeruginosa and similar sequences predominantly found in proteobacteria. In the type I-F CRISPR-Cas system, Cas3 is fused with Ca ...	This domain is found at the N-terminal end of CRISPR-associated nuclease/helicase Cas3 subtype I-F/YPEST from Pseudomonas aeruginosa and similar sequences predominantly found in proteobacteria. In the type I-F CRISPR-Cas system, Cas3 is fused with Cas2 at the N terminus. This entry represents the Cas2 domain of Cas3, which shows a four-stranded beta-sheet and two alpha-helices, in a structure that resembles that of Cas2 from the Escherichia coli. It appears N- terminal to the histidine-aspartate (HD)-type nuclease domain (Pfam:PF18019) [1,2].	Domain
C [auth A], D [auth B]	PF21802	CRISPR-associated Cas3 subtype I-F/YPEST-like, C-terminal domain (Cas3-like_C)	CRISPR-associated Cas3 subtype I-F/YPEST-like, C-terminal domain	This domain is found at the C-terminal end of CRISPR-associated nuclease/helicase Cas3 subtype I-F/YPEST from Pseudomonas aeruginosa. Cas3 contains an HD nuclease domain (Pfam:PF18019), RecA1, RecA2, a long linker region, and this C-terminal domain. ...	This domain is found at the C-terminal end of CRISPR-associated nuclease/helicase Cas3 subtype I-F/YPEST from Pseudomonas aeruginosa. Cas3 contains an HD nuclease domain (Pfam:PF18019), RecA1, RecA2, a long linker region, and this C-terminal domain. This domain shows two alpha-helices and two six-stranded beta-blades [1,2].	Domain
C [auth A], D [auth B]	PF18019	Cas3, HD domain (Cas3_HD)	Cas3, HD domain	This HD domain is found at the N-terminus of Cas3 enzymes fused to a helicase domain. This domain is sometimes found as a separate protein. It acts as a nuclease that cleaves ssDNA.	Domain
C [auth A], D [auth B]	PF22590	CRISPR-associated nuclease/helicase Cas3, C-terminal (Cas3-like_C_2)	CRISPR-associated nuclease/helicase Cas3, C-terminal	This entry represents the C-terminal domain of CRISPR-associated nuclease/helicase Cas3 subtype I-F/YPEST from Pseudomonas aeruginosa (Cas3), a DNA-degradation enzyme that forms part of the CRISPR-Cas bacterial immune system. Cas3 contains a Cas2 dom ...	This entry represents the C-terminal domain of CRISPR-associated nuclease/helicase Cas3 subtype I-F/YPEST from Pseudomonas aeruginosa (Cas3), a DNA-degradation enzyme that forms part of the CRISPR-Cas bacterial immune system. Cas3 contains a Cas2 domain, an HD nuclease domain (Pfam:PF18019), RecA1, RecA2, a long linker region, and a C-terminal domain (this entry). This domain contains two alpha-helices and two six-stranded beta-blades [6].	Domain
A [auth F], B [auth D], E [auth C], F [auth E]	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
C [auth A], D [auth B]	CRISPR-associated nuclease/helicase Cas3 subtype I-F/YPEST	binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding nucleic acid conformation isomerase activity isomerase activity catalytic activity, acting on a nucleic acid helicase activity macromolecular conformation isomerase activity catalytic activity ATP-dependent activity hydrolase activity cation binding metal ion 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	-
A [auth F], B [auth D], E [auth C], F [auth E]	CRISPR-associated endonuclease Cas1	DNA endonuclease activity endonuclease activity catalytic activity, acting on DNA nuclease activity catalytic activity, acting on a nucleic acid catalytic activity DNA nuclease activity DNA binding binding nucleic acid binding cation binding ion binding metal ion binding small molecule binding DNA endonuclease activity endonuclease activity catalytic activity, acting on DNA nuclease activity catalytic activity, acting on a nucleic acid catalytic activity DNA nuclease activity DNA binding binding nucleic acid binding cation binding ion binding metal ion binding small molecule binding identical protein binding protein 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	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth A], D [auth B]	IPR054712	CRISPR-associated nuclease/helicase Cas3 domain	Domain
C [auth A], D [auth B]	IPR048824	CRISPR-associated Cas3 subtype I-F/YPEST-like, C-terminal domain	Domain
C [auth A], D [auth B]	IPR048823	CRISPR-associated nuclease/helicase Cas3, I-F/YPEST, Cas2 domain	Domain
C [auth A], D [auth B]	IPR013395	CRISPR-associated Cas3, Yersinia-type	Family
C [auth A], D [auth B]	IPR038257	CRISPR-associated Cas3-type HD domain superfamily	Homologous Superfamily
C [auth A], D [auth B]	IPR006483	CRISPR-associated Cas3-type, HD domain	Domain
C [auth A], D [auth B]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A [auth F], B [auth D], E [auth C], F [auth E]	IPR002729	CRISPR-associated protein Cas1	Family
A [auth F], B [auth D], E [auth C], F [auth E]	IPR042206	CRISPR-associated endonuclease Cas1, C-terminal domain	Homologous Superfamily
A [auth F], B [auth D], E [auth C], F [auth E]	IPR042211	CRISPR-associated endonuclease Cas1, N-terminal domain	Homologous Superfamily
A [auth F], B [auth D], E [auth C], F [auth E]	IPR050646	CRISPR-associated endonuclease Cas1	Family
A [auth F], B [auth D], E [auth C], F [auth E]	IPR019857	CRISPR-associated protein Cas1, YPEST subtype	Family

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.