Annotations: 3K8A

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Single strand DNA-binding domain, SSB	8073147	4000346	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Nucleic acid-binding proteins	8073148	3000135	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Nucleic acid-binding proteins	8073148	3000135	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	SSB_1	e3k8aA1	A: a/b three-layered sandwiches	X: EGF-like	H: EGF-related	T: EGF/Laminin	F: SSB_1	ECOD (v294.1)
B	COesterase, BD-FAE	e3k8aB1	A: a/b three-layered sandwiches	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: COesterase, BD-FAE	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)
B	2.40.50.140	Mainly Beta	Beta Barrel	OB fold (Dihydrolipoamide Acetyltransferase, E2P)	Nucleic acid-binding proteins	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF22657	Another single-strand binding protein family (SSB_1)	Another single-strand binding protein family	This family includes single stranded binding proteins. They play an important role in DNA replication, recombination and repair.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Putative primosomal replication protein	DNA binding double-stranded DNA binding binding nucleic acid binding identical protein binding protein binding protein homodimerization activity protein dimerization activity ATPase activator activity molecular function activator activity molecular function regulator activity ATPase binding enzyme binding single-stranded DNA binding	DNA-templated DNA replication DNA replication, synthesis of primer RNA metabolic process primary metabolic process DNA metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA replication biosynthetic process metabolic process DNA-templated DNA replication DNA replication, synthesis of primer RNA metabolic process primary metabolic process DNA metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA replication biosynthetic process metabolic process cellular process macromolecule metabolic process	primosome complex protein-containing complex intracellular anatomical structure protein-DNA complex pre-primosome complex intracellular membraneless organelle chromosome intracellular organelle cellular anatomical structure organelle membraneless organelle replication fork replisome

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR023646	Primosomal replication protein PriB	Family
A, B	IPR000424	Primosome PriB/single-strand DNA-binding	Family
A, B	IPR012340	Nucleic acid-binding, OB-fold	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.