3S1S | pdb_00003s1s

Characterization and crystal structure of the type IIG restriction endonuclease BpuSI

External Resource: Annotation

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

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	BpuSI_N	e3s1sA1	A: a/b three-layered sandwiches	X: DNA methylase specificity domain	H: DNA methylase specificity domain	T: DNA methylase specificity domain	F: BpuSI_N	ECOD (v294.1)
A	N6_Mtase	e3s1sA3	A: a/b three-layered sandwiches	X: DNA methylase specificity domain	H: DNA methylase specificity domain	T: DNA methylase specificity domain	F: N6_Mtase	ECOD (v294.1)
A	BpuSI_TRD	e3s1sA4	A: a/b three-layered sandwiches	X: DNA methylase specificity domain	H: DNA methylase specificity domain	T: DNA methylase specificity domain	F: BpuSI_TRD	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

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)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

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 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 cation binding 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 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	-

InterPro: Protein Family Classification InterPro Database Homepage

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.