3S1S

Characterization and crystal structure of the type IIG restriction endonuclease BpuSI

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
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	F_UNCLASSIFIED	e3s1sA2	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: F_UNCLASSIFIED	ECOD (1.6)
A	PF22008	e3s1sA4	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: PF22008	ECOD (1.6)
A	PF02384	e3s1sA3	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: PF02384	ECOD (1.6)
A	PF15516	e3s1sA1	A: a/b three-layered sandwiches	X: Restriction endonuclease-like	H: Restriction endonuclease-like (From Topology)	T: Restriction endonuclease-like	F: PF15516	ECOD (1.6)

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)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF15516	BpuSI N-terminal domain (BpuSI_N)	BpuSI N-terminal domain	This is the N-terminal (nuclease) domain of the BpuSI restriction endonuclease [1].	Domain
A	PF02384	N-6 DNA Methylase (N6_Mtase)	N-6 DNA Methylase	-	Family
A	PF22008	Restriction endonuclease BpuSI, specificity domain (BpuSI_TRD)	Restriction endonuclease BpuSI, specificity domain	This domain is found at the C-terminal end of the restriction endonuclease BpuSI from Bacillus pumilus (Swiss:G1K3S1) and similar bacterial sequences. BpuSI is a Type IIG restriction endonuclease that consists of three functional domains: an N-termin ...	This domain is found at the C-terminal end of the restriction endonuclease BpuSI from Bacillus pumilus (Swiss:G1K3S1) and similar bacterial sequences. BpuSI is a Type IIG restriction endonuclease that consists of three functional domains: an N-terminal domain Pfam:PF15516, a N-6 DNA Methylase domain Pfam:PF02384 and a C-terminal specificity domain (TRD, this entry), which includes a final domain with a mixed alpha/beta structure and unknown function [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	restriction endonuclease BpuSI	DNA binding binding organic cyclic compound 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 DNA binding binding organic cyclic compound 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 macromolecule modification macromolecule metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR029126	Restriction endonuclease BpuSI, N-terminal 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 R01GM133198.