Annotations: 5GQH

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF18019	e5gqhA2	A: alpha complex topology	X: PDEase-like	H: HD-domain/PDEase-like (From Topology)	T: HD-domain/PDEase-like	F: PF18019	ECOD (1.6)
A	PF21802	e5gqhA4	A: a+b two layers	X: Cas3 C-terminal domain	H: Cas3 subtype I-F/YPEST C-terminal domain (From Topology)	T: Cas3 subtype I-F/YPEST C-terminal domain	F: PF21802	ECOD (1.6)
A	F_UNCLASSIFIED	e5gqhA3	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: F_UNCLASSIFIED	ECOD (1.6)
A	PF22590	e5gqhA1	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: PF22590	ECOD (1.6)
B	PF21401	e5gqhB1	A: alpha arrays	X: Thymine dioxygenase JBP1 DNA-binding domain-like	H: Cas3 inhibitor AcrF3 (From Topology)	T: Cas3 inhibitor AcrF3	F: PF21401	ECOD (1.6)
C	PF21401	e5gqhC1	A: alpha arrays	X: Thymine dioxygenase JBP1 DNA-binding domain-like	H: Cas3 inhibitor AcrF3 (From Topology)	T: Cas3 inhibitor AcrF3	F: PF21401	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	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
A	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
B, C	PF21401	Cas3 inhibitor AcrF3 (AcrF3)	Cas3 inhibitor AcrF3	AcrF3, a protein encoded by gene 35 from phage JBD5, has been reported to specifically inhibit the Cas3 protein of the P. aeruginosa PA14 strain (PaCas3) and to counteract the type I-F CRISPR-Cas system [1]. AcrF3 eluted as a dimer in gel-filtration ...	AcrF3, a protein encoded by gene 35 from phage JBD5, has been reported to specifically inhibit the Cas3 protein of the P. aeruginosa PA14 strain (PaCas3) and to counteract the type I-F CRISPR-Cas system [1]. AcrF3 eluted as a dimer in gel-filtration chromatography [1]. In the complex structure, AcrF3 binds to PaCas3 at a ratio of 2:1, suggesting that AcrF3 functions as a homodimer that inhibits PaCas3 [1]. A single AcrF3 molecule has a two-layer architecture with six alpha-helices [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	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 organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding organic cyclic compound binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding catalytic activity, acting on a nucleic acid helicase activity catalytic activity ATP-dependent activity hydrolase activity cation binding metal ion 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	-
B, C	anti-CRISPR protein 3	cation binding ion binding binding metal ion binding small molecule binding	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR048824	CRISPR-associated Cas3 subtype I-F/YPEST-like, C-terminal domain	Domain
A	IPR048823	CRISPR-associated nuclease/helicase Cas3, I-F/YPEST, Cas2 domain	Domain
A	IPR013395	CRISPR-associated Cas3, Yersinia-type	Family
A	IPR038257	CRISPR-associated Cas3-type HD domain superfamily	Homologous Superfamily
A	IPR006483	CRISPR-associated Cas3-type, HD domain	Domain
A	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
B, C	IPR049085	Cas3 inhibitor AcrF3-like	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 R01GM133198.