Annotations: 4F0Q

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	EUF07528	e4f0qA1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: PUA domain	F: EUF07528	ECOD (1.6)
A	Mrr_cat	e4f0qA2	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: Mrr_cat	ECOD (1.6)
B	EUF07528	e4f0qB1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: PUA domain	F: EUF07528	ECOD (1.6)
B	Mrr_cat	e4f0qB2	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: Mrr_cat	ECOD (1.6)
C	EUF07528	e4f0qC1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: PUA domain	F: EUF07528	ECOD (1.6)
C	Mrr_cat	e4f0qC2	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: Mrr_cat	ECOD (1.6)
D	EUF07528	e4f0qD1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: PUA domain	F: EUF07528	ECOD (1.6)
D	Mrr_cat	e4f0qD2	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: Mrr_cat	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.30.280.20	Mainly Beta	Roll	PUA domain-like		CATH (4.3.0)
A	3.40.1350.10	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)
B	2.30.280.20	Mainly Beta	Roll	PUA domain-like		CATH (4.3.0)
B	3.40.1350.10	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)
C	2.30.280.20	Mainly Beta	Roll	PUA domain-like		CATH (4.3.0)
C	3.40.1350.10	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)
D	2.30.280.20	Mainly Beta	Roll	PUA domain-like		CATH (4.3.0)
D	3.40.1350.10	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF04471	Restriction endonuclease (Mrr_cat)	Restriction endonuclease	-	Family
A, B, C, D	PF18062	Restriction endonuclease AspBHI N-terminal (RE_AspBHI_N)	Restriction endonuclease AspBHI N-terminal	This is the N-terminal domain found in modification-dependent restriction endonuclease proteins such as AspBHI, which can be found in Azoarcus sp. AspBHI is a homo-tetrameric protein that recognizes 5-methylcytosine in the double-strand DNA sequence ...	This is the N-terminal domain found in modification-dependent restriction endonuclease proteins such as AspBHI, which can be found in Azoarcus sp. AspBHI is a homo-tetrameric protein that recognizes 5-methylcytosine in the double-strand DNA sequence context of (C/T) (C/G) (5mC) nucleotide (C/G) and cleaves the two strands at a fixed distance (N12/N16) 3 to the modified cytosine. The N-terminal domain is responsible for DNA-recognition and resembles an SRA-like 5-methylcytosine binding domain in structure and function [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Restriction endonuclease	DNA binding binding organic cyclic compound binding nucleic acid binding endonuclease activity nuclease activity hydrolase activity, acting on ester bonds hydrolase activity catalytic activity 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 DNA restriction-modification system defense response to symbiont response to external stimulus primary metabolic process clearance of foreign intracellular DNA clearance of foreign intracellular nucleic acids DNA metabolic process response to biotic stimulus nucleic acid metabolic process nucleobase-containing compound metabolic process DNA modification biological process involved in interspecies interaction between organisms response to stimulus response to other organism defense response DNA restriction-modification system defense response to symbiont response to external stimulus primary metabolic process clearance of foreign intracellular DNA clearance of foreign intracellular nucleic acids DNA metabolic process response to biotic stimulus nucleic acid metabolic process nucleobase-containing compound metabolic process DNA modification defense response to other organism response to stress macromolecule modification metabolic process response to external biotic stimulus macromolecule metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR041409	Restriction endonuclease AspBHI, N-terminal	Domain
A, B, C, D	IPR011856	tRNA endonuclease-like domain superfamily	Homologous Superfamily
A, B, C, D	IPR007560	Restriction endonuclease type IV, Mrr	Domain

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.