Annotations: 3S1S

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	BpuSI_N	e3s1sA1	A: alpha arrays	X: Restriction endonuclease-like	H: Restriction endonuclease-like	T: Restriction endonuclease-like	F: BpuSI_N	ECOD (v295.2)
A		e3s1sA2	A: alpha arrays	X: DNA methylase specificity domain	H: DNA methylase specificity domain	T: DNA methylase specificity domain	F:	ECOD (v295.2)
A	N6_Mtase	e3s1sA3	A: alpha arrays	X: DNA methylase specificity domain	H: DNA methylase specificity domain	T: DNA methylase specificity domain	F: N6_Mtase	ECOD (v295.2)
A	BpuSI_TRD	e3s1sA4	A: alpha arrays	X: DNA methylase specificity domain	H: DNA methylase specificity domain	T: DNA methylase specificity domain	F: BpuSI_TRD	ECOD (v295.2)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.90.1570.30	Alpha Beta	Alpha-Beta Complex	tt1808, chain A		CATH (4.3.0)
A	3.40.50.12420	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	restriction endonuclease BpuSI	DNA binding binding nucleic acid binding transferase activity, transferring one-carbon groups N-methyltransferase activity transferase activity methyltransferase activity catalytic activity cation binding ion binding metal ion binding small molecule binding	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	-

Chains	Accession	Name	Type
A	IPR029126	Restriction endonuclease BpuSI, N-terminal domain	Domain
A	IPR050953	N(4)/N(6)-adenine-specific DNA methyltransferase	Family
A	IPR054164	Restriction endonuclease BpuSI, specificity domain	Domain
A	IPR002052	DNA methylase, N-6 adenine-specific, conserved site	Conserved Site
A	IPR003356	DNA methylase, adenine-specific	Domain
A	IPR029063	S-adenosyl-L-methionine-dependent methyltransferase superfamily	Homologous Superfamily

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

3S1S | pdb_00003s1s