Annotations: 2CA1

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2ca1a1	Alpha and beta proteins (a+b)	Nucleocapsid protein dimerization domain	Nucleocapsid protein dimerization domain	Coronavirus nucleocapsid protein	Coronavirus nucleocapsid protein	(Infectious bronchitis virus ) [TaxId: 11120 ],	SCOPe (2.08)
B	d2ca1b_	Alpha and beta proteins (a+b)	Nucleocapsid protein dimerization domain	Nucleocapsid protein dimerization domain	Coronavirus nucleocapsid protein	Coronavirus nucleocapsid protein	(Infectious bronchitis virus ) [TaxId: 11120 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Coronavirus nucleocapsid protein dimerization domain	8080128	4003799	SCOP2 (2021-05-27)
A	SCOP2 Superfamily	Nucleocapsid protein dimerization domain	8080129	3001606	SCOP2 (2021-05-27)
B	SCOP2B Superfamily	Nucleocapsid protein dimerization domain	8080129	3001606	SCOP2B (2021-05-27)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF00937	e2ca1A1	A: a+b duplicates or obligate multimers	X: Arterivirus nucleocapsid protein (From Topology)	H: Arterivirus nucleocapsid protein (From Topology)	T: Arterivirus nucleocapsid protein	F: PF00937	ECOD (1.6)
B	PF00937	e2ca1B1	A: a+b duplicates or obligate multimers	X: Arterivirus nucleocapsid protein (From Topology)	H: Arterivirus nucleocapsid protein (From Topology)	T: Arterivirus nucleocapsid protein	F: PF00937	ECOD (1.6)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	NUCLEOCAPSID PROTEIN	RNA binding binding organic cyclic compound binding nucleic acid binding identical protein binding protein binding	-	host intracellular membrane-bounded organelle host cellular component host intracellular part host cell endoplasmic reticulum-Golgi intermediate compartment host cell cytoplasm host cell part host intracellular region cellular anatomical entity host cell cytoplasm part host intracellular organelle protein-containing complex ribonucleoprotein complex viral nucleocapsid viral capsid host intracellular membrane-bounded organelle host cellular component host intracellular part host cell endoplasmic reticulum-Golgi intermediate compartment host cell cytoplasm host cell part host intracellular region cellular anatomical entity host cell cytoplasm part host intracellular organelle protein-containing complex ribonucleoprotein complex viral nucleocapsid viral capsid virion component host cell Golgi apparatus

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR001218	Nucleocapsid protein, coronavirus	Family
A, B	IPR044344	Nucleocapsid (N) protein, C-terminal domain, coronavirus	Domain
A, B	IPR042547	Nucleocapsid protein, gammacoronavirus	Family
A, B	IPR037195	Nucleocapsid protein, N-terminal	Homologous Superfamily
A, B	IPR037179	Nucleocapsid protein, C-terminal	Homologous Superfamily
A, B	IPR044345	Nucleocapsid (N) protein, N-terminal domain, coronavirus	Domain

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.