Annotations: 2CCZ

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2ccza2	All beta proteins	OB-fold	Nucleic acid-binding proteins	Single strand DNA-binding domain, SSB	automated matches	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
A	d2ccza3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
B	d2cczb2	All beta proteins	OB-fold	Nucleic acid-binding proteins	Single strand DNA-binding domain, SSB	automated matches	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)
B	d2cczb3	Artifacts	Tags	Tags	Tags	C-terminal Tags	(Escherichia coli K-12 ) [TaxId: 83333 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Nucleic acid-binding proteins	8042959	3000135	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Nucleic acid-binding proteins	8042959	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	e2cczA1	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: SSB_1	ECOD (1.6)
B	SSB_1	e2cczB1	A: beta barrels	X: OB-fold	H: Nucleic acid-binding proteins (From Topology)	T: Nucleic acid-binding proteins	F: SSB_1	ECOD (1.6)

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	PRIMOSOMAL REPLICATION PROTEIN N	identical protein binding protein binding binding DNA binding organic cyclic compound binding single-stranded DNA binding nucleic acid binding	nucleobase-containing compound metabolic process DNA-templated DNA replication DNA replication DNA replication initiation metabolic process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process DNA-templated DNA replication maintenance of fidelity replication fork processing response to stimulus response to radiation response to abiotic stimulus nucleobase-containing compound metabolic process DNA-templated DNA replication DNA replication DNA replication initiation metabolic process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process DNA-templated DNA replication maintenance of fidelity replication fork processing response to stimulus response to radiation response to abiotic stimulus cellular process plasmid maintenance cellular biosynthetic process DNA replication, synthesis of primer cellular metabolic process RNA metabolic process nucleobase-containing compound biosynthetic process macromolecule biosynthetic process RNA biosynthetic process nucleic acid biosynthetic process biosynthetic process DNA duplex unwinding DNA geometric change chromosome organization DNA conformation change DNA unwinding involved in DNA replication cellular component organization organelle organization cellular component organization or biogenesis	primosome complex protein-containing complex intracellular anatomical structure protein-DNA complex pre-primosome complex chromosome cellular anatomical entity intracellular organelle organelle intracellular non-membrane-bounded organelle replication fork replisome non-membrane-bounded organelle DnaB-DnaC-DnaT-PriA-PriB complex
C	5'-D(TPTPTPTPTPTPTPTPTPTP TPTPTPTP*T)-3'	-	-	-

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 R01GM133198.