1SMN | pdb_00001smn

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d1smnb_	Alpha and beta proteins (a+b)	His-Me finger endonucleases	His-Me finger endonucleases	DNA/RNA non-specific endonuclease	Sm endonuclease	(Serratia marcescens ) [TaxId: 615 ],	SCOPe (2.08)
A	d1smna_	Alpha and beta proteins (a+b)	His-Me finger endonucleases	His-Me finger endonucleases	DNA/RNA non-specific endonuclease	Sm endonuclease	(Serratia marcescens ) [TaxId: 615 ],	SCOPe (2.08)

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	His-Me finger endonucleases	8034092	3001893	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	His-Me finger endonucleases	8034092	3001893	SCOP2B (2022-06-29)

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	zf-His_Me_endon	e1smnB1	A: beta barrels	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: zf-His_Me_endon	ECOD (v294.2)
A	zf-His_Me_endon	e1smnA1	A: beta barrels	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: zf-His_Me_endon	ECOD (v294.2)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.40.570.10	Alpha Beta	3-Layer(aba) Sandwich	Extracellular Endonuclease	Chain A	CATH (4.3.0)
A	3.40.570.10	Alpha Beta	3-Layer(aba) Sandwich	Extracellular Endonuclease	Chain A	CATH (4.3.0)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	EXTRACELLULAR ENDONUCLEASE	hydrolase activity catalytic activity binding nucleic acid binding endonuclease activity nuclease activity catalytic activity, acting on a nucleic acid cation binding ion binding metal ion binding small molecule binding	-	cellular anatomical structure extracellular region

Chains	Accession	Name	Type
A, B	IPR020821	ENPP1-3/EXOG-like, endonuclease/phosphodiesterase domain	Domain
A, B	IPR018524	DNA/RNA non-specific endonuclease, active site	Active Site
A, B	IPR044929	DNA/RNA non-specific endonuclease superfamily	Homologous Superfamily
A, B	IPR044925	His-Me finger superfamily	Homologous Superfamily
A, B	IPR040255	Non-specific endonuclease	Family
A, B	IPR001604	DNA/RNA non-specific endonuclease/pyrophosphatase/phosphodiesterase 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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.