4Z0U | pdb_00004z0u

RNase HI/SSB-Ct complex

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	Ribonuclease H-like	8075076	3000143	SCOP2B (2022-06-29)
A	SCOP2 Family	Ribonuclease H-like	8075075	4000541	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Ribonuclease H-like	8075076	3000143	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	RNase_H	e4z0uB1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: RNase_H	ECOD (1.6)
A	RNase_H	e4z0uA1	A: mixed a+b and a/b	X: Ribonuclease H-like	H: Ribonuclease H-like (From Topology)	T: Ribonuclease H-like	F: RNase_H	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.30.420.10	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.2.0)
A	3.30.420.10	Alpha Beta	2-Layer Sandwich	Nucleotidyltransferase	domain 5	CATH (4.2.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF00075	RNase H (RNase_H)	RNase H	RNase H digests the RNA strand of an RNA/DNA hybrid. Important enzyme in retroviral replication cycle, and often found as a domain associated with reverse transcriptases. Structure is a mixed alpha+beta fold with three a/b/a layers.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C [auth D], D [auth E]	SSB-Ct Peptide	enzyme regulator activity enzyme activator activity molecular function activator activity molecular function regulator activity identical protein binding protein binding binding DNA binding single-stranded DNA binding nucleic acid binding	nucleobase-containing compound metabolic process DNA replication metabolic process cellular process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular response to stimulus mismatch repair response to stimulus cellular response to stress DNA damage response response to stress nucleobase-containing compound metabolic process DNA replication metabolic process cellular process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular response to stimulus mismatch repair response to stimulus cellular response to stress DNA damage response response to stress DNA repair DNA-templated DNA replication DNA recombination recombinational repair SOS response	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol protein-containing complex nucleoid single-stranded DNA-binding protein complex protein-DNA complex intracellular membraneless organelle chromosome intracellular organelle organelle membraneless organelle replication fork cellular anatomical structure intracellular anatomical structure cytoplasm cytosol protein-containing complex nucleoid single-stranded DNA-binding protein complex protein-DNA complex intracellular membraneless organelle chromosome intracellular organelle organelle membraneless organelle replication fork replisome
A, B	Ribonuclease H	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding endonuclease activity RNA endonuclease activity producing 5'-phosphomonoesters, hydrolytic mechanism catalytic activity, acting on RNA RNA-DNA hybrid ribonuclease activity catalytic activity, acting on a nucleic acid RNA nuclease activity hydrolase activity hydrolase activity, acting on ester bonds cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding endonuclease activity RNA endonuclease activity producing 5'-phosphomonoesters, hydrolytic mechanism catalytic activity, acting on RNA RNA-DNA hybrid ribonuclease activity catalytic activity, acting on a nucleic acid RNA nuclease activity hydrolase activity hydrolase activity, acting on ester bonds nuclease activity RNA endonuclease activity catalytic activity nucleic acid binding	DNA replication, removal of RNA primer catabolic process RNA metabolic process primary metabolic process DNA metabolic process nucleic acid metabolic process macromolecule catabolic process nucleobase-containing compound catabolic process nucleobase-containing compound metabolic process DNA replication nucleic acid catabolic process metabolic process cellular process macromolecule metabolic process DNA replication, removal of RNA primer catabolic process RNA metabolic process primary metabolic process DNA metabolic process nucleic acid metabolic process macromolecule catabolic process nucleobase-containing compound catabolic process nucleobase-containing compound metabolic process DNA replication nucleic acid catabolic process metabolic process cellular process macromolecule metabolic process RNA catabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C [auth D], D [auth E]	IPR011344	Single-stranded DNA-binding protein	Family
C [auth D], D [auth E]	IPR000424	Primosome PriB/single-strand DNA-binding	Family
C [auth D], D [auth E]	IPR012340	Nucleic acid-binding, OB-fold	Homologous Superfamily
A, B	IPR036397	Ribonuclease H superfamily	Homologous Superfamily
A, B	IPR022892	Ribonuclease HI	Family
A, B	IPR002156	Ribonuclease H domain	Domain
A, B	IPR050092	Ribonuclease H	Family
A, B	IPR012337	Ribonuclease H-like 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.