Protein Domain : Levivirus coat protein IPR002703

Type	Family
Description	This entry represents the coat proteins of the leviviruses (phage MS2) and alloleviruses (phage Qbeta and phage F1). The Levivirus coat protein forms the bacteriophage coat that encapsidates the viral RNA. The virion shell is formed from 180 copies of this protein. The Bacteriophage MS2 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 [ ].
Short Name	Levivir_coat