2SNS | pdb_00002sns

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2snsa_	All beta proteins	OB-fold	Staphylococcal nuclease	Staphylococcal nuclease	Staphylococcal nuclease	(Staphylococcus aureus ) [TaxId: 1280 ],	SCOPe (2.08)

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Staphylococcal nuclease	8041753	3000443	SCOP2B (2022-06-29)

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	SNase	e2snsA1	A: beta barrels	X: OB-fold	H: Staphylococcal nuclease (From Topology)	T: Staphylococcal nuclease	F: SNase	ECOD (1.6)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.40.50.90	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)		CATH (4.3.0)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	THERMONUCLEASE PRECURSOR	binding nucleic acid binding endonuclease activity catalytic activity, acting on a nucleic acid hydrolase activity 3' overhang single-stranded DNA endodeoxyribonuclease activity single-stranded DNA endodeoxyribonuclease activity DNA nuclease activity DNA endonuclease activity hydrolase activity, acting on ester bonds catalytic activity, acting on DNA nuclease activity catalytic activity cation binding binding nucleic acid binding endonuclease activity catalytic activity, acting on a nucleic acid hydrolase activity 3' overhang single-stranded DNA endodeoxyribonuclease activity single-stranded DNA endodeoxyribonuclease activity DNA nuclease activity DNA endonuclease activity hydrolase activity, acting on ester bonds catalytic activity, acting on DNA nuclease activity catalytic activity cation binding ion binding metal ion binding small molecule binding	-	cellular anatomical structure membrane extracellular region

Chains	Accession	Name	Type
A	IPR016071	Staphylococcal nuclease (SNase-like), OB-fold	Domain
A	IPR035437	SNase-like, OB-fold superfamily	Homologous Superfamily
A	IPR002071	Thermonuclease active site	Active Site

Chains	Enzyme Name	Description	Catalytic Residues
A	micrococcal nuclease M-CSA #165	Staphyloccal nuclease is a Ca2+ activated phosphodiesterase which catalyses the hydrolysis of both DND and RNA at the 5' position of the phophodiester bond to yield a 3'-mononucleotides and polynucleotides.	Defined by 6 residues: ASP:A-21ARG:A-35ASP:A-40THR:A-41GLU:A-43ARG:A-87 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 3.1.31.1 (PDB Primary Data) Search M-CSA Motif + EC 3.1.31.1

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.

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