Annotations: 7BTO

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
E [auth F]	SCOP2B Superfamily	Restriction endonuclease-like	8091621	3000104	SCOP2B (2022-06-29)
E [auth F]	SCOP2B Superfamily	RecA-like P-loop NTPases	8091624	3002019	SCOP2B (2022-06-29)
F [auth G]	SCOP2B Superfamily	Restriction endonuclease-like	8091621	3000104	SCOP2B (2022-06-29)
F [auth G]	SCOP2B Superfamily	RecA-like P-loop NTPases	8091624	3002019	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	HsdM_N	e7btoA2	A: alpha arrays	X: N-terminal helical domain in restriction-modification system methylation subunit-like	H: N-terminal helical domain in restriction-modification system methylation subunit (From Topology)	T: N-terminal helical domain in restriction-modification system methylation subunit	F: HsdM_N	ECOD (1.6)
A	N6_Mtase	e7btoA1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: N6_Mtase	ECOD (1.6)
B	HsdM_N	e7btoB2	A: alpha arrays	X: N-terminal helical domain in restriction-modification system methylation subunit-like	H: N-terminal helical domain in restriction-modification system methylation subunit (From Topology)	T: N-terminal helical domain in restriction-modification system methylation subunit	F: HsdM_N	ECOD (1.6)
B	N6_Mtase	e7btoB1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: N6_Mtase	ECOD (1.6)
C [auth D]	ArdA	e7btoD1	A: a+b complex topology	X: ArdA (From Topology)	H: ArdA (From Topology)	T: ArdA	F: ArdA	ECOD (1.6)
D [auth E]	ArdA	e7btoE1	A: a+b complex topology	X: ArdA (From Topology)	H: ArdA (From Topology)	T: ArdA	F: ArdA	ECOD (1.6)
E [auth F]	DEAD_1	e7btoF2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: DEAD_1	ECOD (1.6)
E [auth F]	HSDR_N	e7btoF1	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: HSDR_N	ECOD (1.6)
F [auth G]	DEAD_1	e7btoG2	A: a/b three-layered sandwiches	X: P-loop domains-like	H: P-loop domains-related	T: P-loop containing nucleoside triphosphate hydrolases	F: DEAD_1	ECOD (1.6)
F [auth G]	HSDR_N	e7btoG1	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: HSDR_N	ECOD (1.6)
G [auth I]	Methylase_S	e7btoI1	A: a+b complex topology	X: DNA methylase specificity domain (From Topology)	H: DNA methylase specificity domain (From Topology)	T: DNA methylase specificity domain	F: Methylase_S	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.20.1260.30	Mainly Alpha	Up-down Bundle	Ferritin	N6 adenine-specific DNA methyltransferase, N-terminal domain	CATH (utative)
A	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (utative)
B	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (utative)
C [auth D]	3.10.20.480	Alpha Beta	Roll	Ubiquitin-like (UB roll)	Antirestriction protein ArdA, domain 1	CATH (utative)
C [auth D]	1.10.8.560	Mainly Alpha	Orthogonal Bundle	Helicase, Ruva Protein	domain 3	CATH (utative)
C [auth D]	1.10.10.1190	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Antirestriction protein ArdA, domain 3	CATH (utative)
D [auth E]	3.10.20.480	Alpha Beta	Roll	Ubiquitin-like (UB roll)	Antirestriction protein ArdA, domain 1	CATH (utative)
D [auth E]	1.10.8.560	Mainly Alpha	Orthogonal Bundle	Helicase, Ruva Protein	domain 3	CATH (utative)
D [auth E]	1.10.10.1190	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Antirestriction protein ArdA, domain 3	CATH (utative)
E [auth F]	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (utative)
F [auth G]	3.40.50.300	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	P-loop containing nucleotide triphosphate hydrolases	CATH (utative)
G [auth I]	3.90.220.20	Alpha Beta	Alpha-Beta Complex	Adenine-n6-DNA-methyltransferase TaqI	Chain A, domain 2	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF12161	HsdM N-terminal domain (HsdM_N)	HsdM N-terminal domain	This domain is found at the N-terminus of the methylase subunit of Type I DNA methyltransferases. This domain family is found in bacteria and archaea, and is typically between 123 and 138 amino acids in length. The family is found in association with ...	This domain is found at the N-terminus of the methylase subunit of Type I DNA methyltransferases. This domain family is found in bacteria and archaea, and is typically between 123 and 138 amino acids in length. The family is found in association with Pfam:PF02384. Mutations in this region of EcoKI methyltransferase Swiss:P08957 abolish the normally strong preference of this system for methylating hemimethylated substrate [1]. The structure of this domain has been shown to be all alpha-helical.	Domain
E [auth F], F [auth G], H [auth C], I [auth H]	PF18766	SWI2/SNF2 ATPase (SWI2_SNF2)	SWI2/SNF2 ATPase	-	Family
E [auth F], F [auth G], H [auth C], I [auth H]	PF04313	Type I restriction enzyme R protein N terminus (HSDR_N) (HSDR_N)	Type I restriction enzyme R protein N terminus (HSDR_N)	-	Family
G [auth I]	PF01420	Type I restriction modification DNA specificity domain (Methylase_S)	Type I restriction modification DNA specificity domain	This domain is also known as the target recognition domain (TRD). Restriction-modification (R-M) systems protect a bacterial cell against invasion of foreign DNA by endonucleolytic cleavage of DNA that lacks a site specific modification. The host ge ...	This domain is also known as the target recognition domain (TRD). Restriction-modification (R-M) systems protect a bacterial cell against invasion of foreign DNA by endonucleolytic cleavage of DNA that lacks a site specific modification. The host genome is protected from cleavage by methylation of specific nucleotides in the target sites. In type I systems, both restriction and modification activities are present in one heteromeric enzyme complex composed of one DNA specificity subunit (this family), two modification (M) subunits and two restriction (R) subunits [2].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Type I restriction enzyme EcoR124II M protein	DNA binding binding nucleic acid binding transferase activity, transferring one-carbon groups N-methyltransferase activity transferase activity methyltransferase activity catalytic activity DNA-methyltransferase activity catalytic activity, acting on DNA site-specific DNA-methyltransferase (adenine-specific) activity catalytic activity, acting on a nucleic acid S-adenosylmethionine-dependent methyltransferase activity	methylation metabolic process cellular process 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 methylation metabolic process cellular process 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 response to external biotic stimulus macromolecule metabolic process	-
C [auth D], D [auth E]	Antirestriction protein ArdA	-	-	-
E [auth F], F [auth G], H [auth C], I [auth H]	Type I restriction enzyme R Protein	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 DNA binding nucleic acid binding endonuclease activity catalytic activity, acting on a nucleic acid hydrolase activity DNA nuclease activity ATP-dependent activity ATP-dependent activity, acting on DNA restriction endodeoxyribonuclease activity DNA endonuclease activity type I site-specific deoxyribonuclease activity hydrolase activity, acting on ester bonds catalytic activity, acting on DNA nuclease activity DNA translocase activity DNA endonuclease activity, producing 5'-phosphomonoesters catalytic activity	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 cellular process response to external biotic stimulus macromolecule metabolic process	-
G [auth I]	Type-1 restriction enzyme EcoR124II specificity protein	DNA binding binding nucleic acid 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 cellular process response to external biotic stimulus macromolecule metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR004546	Restriction endonuclease, type I, methylase subunit	Family
A, B	IPR002052	DNA methylase, N-6 adenine-specific, conserved site	Conserved Site
A, B	IPR003356	DNA methylase, adenine-specific	Domain
A, B	IPR029063	S-adenosyl-L-methionine-dependent methyltransferase superfamily	Homologous Superfamily
A, B	IPR022749	N6 adenine-specific DNA methyltransferase, N-terminal domain	Domain
A, B	IPR051537	DNA Adenine N(4)/N(6)-Methyltransferase	Family
A, B	IPR038333	Type I restriction enzyme EcoKI-like, methylase subunit, N-terminal domain superfamily	Homologous Superfamily
E [auth F], F [auth G], H [auth C], I [auth H]	IPR007409	Restriction endonuclease, type I, HsdR, N-terminal	Domain
E [auth F], F [auth G], H [auth C], I [auth H]	IPR004473	Restriction endonuclease, type I, HsdR	Family
E [auth F], F [auth G], H [auth C], I [auth H]	IPR040980	SWI2/SNF2 ATPase	Domain
E [auth F], F [auth G], H [auth C], I [auth H]	IPR014001	Helicase superfamily 1/2, ATP-binding domain	Domain
E [auth F], F [auth G], H [auth C], I [auth H]	IPR022625	Type I restriction enzyme R protein, C-terminal	Domain
E [auth F], F [auth G], H [auth C], I [auth H]	IPR055180	Restriction endonuclease, type I, HsdR, second RecA-like helicase domain	Domain
E [auth F], F [auth G], H [auth C], I [auth H]	IPR051268	Type I restriction enzyme R subunit	Family
E [auth F], F [auth G], H [auth C], I [auth H]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
G [auth I]	IPR044946	Type I restriction modification DNA specificity domain superfamily	Homologous Superfamily
G [auth I]	IPR051212	Type I restriction enzyme S subunit	Family
G [auth I]	IPR000055	Type I restriction modification DNA specificity domain	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 R01GM157729.