1HKQ

PPS10 plasmid DNA replication initiator protein RepA. Replication inactive, dimeric N-terminal domain.

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
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: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1hkqa_	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	Replication initiation protein	Replication protein A, repA	PSEUDOMONAS SYRINGAE PV. SAVASTANOI (Pseudomonas savastanoi ) [TaxId: 29438 ],	SCOPe (2.08)
B	d1hkqb_	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	Replication initiation protein	Replication protein A, repA	PSEUDOMONAS SYRINGAE PV. SAVASTANOI (Pseudomonas savastanoi ) [TaxId: 29438 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Replication initiation protein	8056263	4000166	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Winged helix DNA-binding domain	8056264	3000034	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Winged helix DNA-binding domain	8056264	3000034	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Rep_3_N	e1hkqA1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: Rep_3_N	ECOD (1.6)
B	Rep_3_N	e1hkqB1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: Rep_3_N	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)
B	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01051	Initiator Replication protein, WH1 (Rep3_N)	Initiator Replication protein, WH1	This protein is an initiator of plasmid replication [1-6]. RepB possesses nicking-closing (topoisomerase I) like activity. It is also able to perform a strand transfer reaction on ssDNA that contains its target. This entry also includes RepA which is ...	This protein is an initiator of plasmid replication [1-6]. RepB possesses nicking-closing (topoisomerase I) like activity. It is also able to perform a strand transfer reaction on ssDNA that contains its target. This entry also includes RepA which is an E.coli protein involved in plasmid replication. The RepA protein binds to DNA repeats that flank the repA gene [3,4]. These proteins consist of two domains containing a winged helix-turn-helix motif, the N-terminal one, WH1, represented in this entry, is involved in the dimerization of RepE and an auxiliary binding to DNA. The C-terminal one, WH2, is related to a sequence-specific binding to the common 8 bp of the iteron [6].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	REPLICATION PROTEIN	catalytic activity, acting on DNA DNA-directed DNA polymerase activity DNA polymerase activity catalytic activity, acting on a nucleic acid transferase activity nucleotidyltransferase activity catalytic activity transferase activity, transferring phosphorus-containing groups identical protein binding protein binding binding	DNA-templated DNA replication DNA replication initiation primary metabolic process DNA metabolic process nucleic acid metabolic process nucleobase-containing compound metabolic process organic cyclic compound metabolic process DNA replication organic substance metabolic process metabolic process macromolecule metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR000525	Initiator Rep protein, WH1 domain	Domain
A, B	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
A, B	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.