3NKE | pdb_00003nke

High resolution structure of the C-terminal domain CRISP-associated protein Cas1 from Escherichia coli str. K-12

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d3nkea_	Multi-domain proteins (alpha and beta)	CRISPR associated protein Cas1-like	CRISPR associated protein Cas1-like	CRISPR associated protein Cas1-like	Cas1 C-terminal fragment	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
B	d3nkeb_	Multi-domain proteins (alpha and beta)	CRISPR associated protein Cas1-like	CRISPR associated protein Cas1-like	CRISPR associated protein Cas1-like	Cas1 C-terminal fragment	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
C	d3nkec_	Multi-domain proteins (alpha and beta)	CRISPR associated protein Cas1-like	CRISPR associated protein Cas1-like	CRISPR associated protein Cas1-like	Cas1 C-terminal fragment	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Cas_Cas1	e3nkeA2	A: alpha complex topology	X: Cas1 (From Topology)	H: Cas1 (From Topology)	T: Cas1	F: Cas_Cas1	ECOD (1.6)
B	Cas_Cas1	e3nkeB2	A: alpha complex topology	X: Cas1 (From Topology)	H: Cas1 (From Topology)	T: Cas1	F: Cas_Cas1	ECOD (1.6)
C	Cas_Cas1	e3nkeC2	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	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	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)
C	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, C	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, C	protein ygbT	DNA binding binding nucleic acid binding endonuclease activity catalytic activity, acting on a nucleic acid hydrolase activity crossover junction DNA endonuclease activity DNA nuclease activity DNA endonuclease activity DNA endonuclease activity, producing 3'-phosphomonoesters hydrolase activity, acting on ester bonds catalytic activity, acting on DNA nuclease activity catalytic activity DNA binding binding nucleic acid binding endonuclease activity catalytic activity, acting on a nucleic acid hydrolase activity crossover junction DNA endonuclease activity DNA nuclease activity DNA endonuclease activity DNA endonuclease activity, producing 3'-phosphomonoesters hydrolase activity, acting on ester bonds catalytic activity, acting on DNA nuclease activity catalytic activity identical protein binding protein binding protein homodimerization activity protein dimerization activity 5'-flap endonuclease activity flap endonuclease activity DNA endonuclease activity, producing 5'-phosphomonoesters cation binding ion binding metal ion binding small molecule binding	cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process metabolic process macromolecule metabolic process DNA repair maintenance of CRISPR repeat elements cellular response to stimulus cellular response to stress response to stimulus DNA damage response response to stress cellular process primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process metabolic process macromolecule metabolic process DNA repair maintenance of CRISPR repeat elements chromosome organization maintenance of DNA repeat elements cellular component organization organelle organization cellular component organization or biogenesis biological process involved in interspecies interaction between organisms response to other organism defense response defense response to symbiont response to external stimulus clearance of foreign intracellular nucleic acids response to biotic stimulus defense response to other organism CRISPR-cas system response to external biotic stimulus defense response to virus response to virus	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR002729	CRISPR-associated protein Cas1	Family
A, B, C	IPR033641	CRISPR-associated protein Cas1, type I-E	Family
A, B, C	IPR042206	CRISPR-associated endonuclease Cas1, C-terminal domain	Homologous Superfamily
A, B, C	IPR042211	CRISPR-associated endonuclease Cas1, N-terminal domain	Homologous Superfamily
A, B, C	IPR019851	CRISPR-associated protein Cas1, ECOLI subtype	Family
A, B, C	IPR050646	CRISPR-associated endonuclease Cas1	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.