Annotations: 9N40

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2B Superfamily	RNA bacteriophage capsid protein	8038606	3001853	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	RNA bacteriophage capsid protein	8038606	3001853	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	RNA bacteriophage capsid protein	8038606	3001853	SCOP2B (2022-06-29)

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
C	Beta-Casp	e9n40C1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: Beta-Casp	ECOD (v295.2)
B	Beta-Casp	e9n40B1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: Beta-Casp	ECOD (v295.2)
A	Beta-Casp	e9n40A1	A: alpha arrays	X: Hypothetical protein YqbG-like	H: Hypothetical protein YqbG-like	T: alpha/beta-Hydrolases	F: Beta-Casp	ECOD (v295.2)

Chains	Accession	Name	Description	Comments	Source
A, B, C	PF01819	Levivirus coat protein (Levi_coat)	Levivirus coat protein	The Levivirus coat protein forms the bacteriophage coat that encapsidates the viral RNA. 180 copies of this protein form the virion shell. The MS2 bacteriophage coat protein controls two distinct processes: sequence-specific RNA encapsidation and rep ...	The Levivirus coat protein forms the bacteriophage coat that encapsidates the viral RNA. 180 copies of this protein form the virion shell. The MS2 bacteriophage coat protein controls two distinct processes: sequence-specific RNA encapsidation and repression of replicase translation-by binding to an RNA stem-loop structure of 19 nucleotides containing the initiation codon of the replicase gene. The binding of a coat protein dimer to this hairpin shuts off synthesis of the viral replicase, switching the viral replication cycle to virion assembly rather than continued replication [2].	Domain

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	Capsid protein	structural molecule activity RNA binding binding nucleic acid binding identical protein binding protein binding	viral gene expression regulation of viral translation regulation of biological process regulation of viral process negative regulation of viral process negative regulation of viral translation viral process biological regulation negative regulation of biological process viral translation	viral capsid T=3 icosahedral viral capsid icosahedral viral capsid virion component