Annotations: 5GKJ

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	NucS_N	e5gkjB1	A: a/b three-layered sandwiches	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: NucS_N	ECOD (v294.1)
A	NucS_N	e5gkjA1	A: a/b three-layered sandwiches	X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4	F: NucS_N	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	2.70.180.20	Mainly Beta	Distorted Sandwich	Protein Yojf	Chain: A	CATH (utative)
B	3.40.1350.10	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (utative)
A	2.70.180.20	Mainly Beta	Distorted Sandwich	Protein Yojf	Chain: A	CATH (utative)
A	3.40.1350.10	Alpha Beta	3-Layer(aba) Sandwich	Trna Endonuclease	Chain: A, domain 1	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF21003	Endonuclease NucS N-terminal PH-like domain (NucS_N)	Endonuclease NucS N-terminal PH-like domain	Endonuclease NucS cleaves both 3' and 5' ssDNA extremities of branched DNA structures and it binds to ssDNA [1,2]. This entry represents the N-terminal PH-like domain of NucS.	Domain
A, B	PF01939	Endonuclease NucS C-terminal domain (NucS_C)	Endonuclease NucS C-terminal domain	Endonuclease NucS cleaves both 3' and 5' ssDNA extremities of branched DNA structures and it binds to ssDNA [1,2]. This entry represents the C-terminal domain of NucS.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Endonuclease EndoMS	DNA binding binding nucleic acid binding DNA endonuclease activity endonuclease activity single-stranded DNA endonuclease activity hydrolase activity, acting on ester bonds catalytic activity, acting on DNA nuclease activity catalytic activity, acting on a nucleic acid hydrolase activity catalytic activity DNA nuclease activity	-	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR048301	Endonuclease NucS, C-terminal domain	Domain
A, B	IPR048302	Endonuclease NucS, N-terminal PH-like domain	Domain
A, B	IPR011856	tRNA endonuclease-like domain superfamily	Homologous Superfamily
A, B	IPR002793	Endonuclease NucS	Family
A, B	IPR049173	Endonuclease NucS, N-terminal domain 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.