Protein: Structural polyprotein (p110) [Cleaved into: Capsid protein (Coat protein) (C); Spike glycoprotein E2 (E2 envelope glycoprotein); Spike glycoprotein E1 (E1 envelope glycoprotein)] (P08563)
Organism: Rubella virus (strain M33) (RUBV)
Function: Capsid protein interacts with genomic RNA and assembles into icosahedric core particles 65-70 nm in diameter. The resulting nucleocapsid eventually associates with the cytoplasmic domain of E2 at the cell membrane, leading to budding and formation of mature virions from host Golgi membranes. Phosphorylation negatively regulates RNA-binding activity, possibly delaying virion assembly during the viral replication phase. Capsid protein dimerizes and becomes disulfide-linked in the virion. Modulates genomic RNA replication. Modulates subgenomic RNA synthesis by interacting with human C1QBP/SF2P32. Induces both perinuclear clustering of mitochondria and the formation of electron-dense intermitochondrial plaques, both hallmarks of rubella virus infected cells. Induces apoptosis when expressed in transfected cells.
Subcellular location: [Capsid protein]: Virion {ECO:0000269|PubMed:28575072}. Host cytoplasm {ECO:0000269|PubMed:25056903}. Host mitochondrion {ECO:0000269|PubMed:10823864}. Note=The capsid protein is concentrated around Golgi region (PubMed:11160697). In the virion, it is probably associated to the viral membrane (PubMed:2214022). {ECO:0000269|PubMed:11160697, ECO:0000269|PubMed:2214022}.; SUBCELLULAR LOCATION: [Spike glycoprotein E2]: Virion membrane; Single-pass type I membrane protein {ECO:0000305}. Host Golgi apparatus membrane; Single-pass type I membrane protein {ECO:0000269|PubMed:7749196, ECO:0000269|PubMed:8468347}. Note=E1 and E2 form heterodimer in the endoplasmic reticulum before they are transported to and retained in the Golgi complex, where virus assembly occurs. E1 possesses an endoplasmic reticulum retention signal, and unassembled E2 and E1 subunits are retained in the endoplasmic reticulum. Presumably, assembly of E2 and E1 would mask the signal, thereby allowing transport of the heterodimer to the Golgi complex. {ECO:0000305|PubMed:2683361, ECO:0000305|PubMed:2845137, ECO:0000305|PubMed:8468347}.; SUBCELLULAR LOCATION: [Spike glycoprotein E1]: Virion membrane; Single-pass type I membrane protein {ECO:0000305}. Host Golgi apparatus membrane; Single-pass type I membrane protein {ECO:0000269|PubMed:8468347}. Note=E1 and E2 form heterodimer in the endoplasmic reticulum before they are transported to and retained in the Golgi complex, where virus assembly occurs (Probable). E1 possesses an endoplasmic reticulum retention signal, and unassembled E2 and E1 subunits are retained in the endoplasmic reticulum (Probable). Presumably, assembly of E2 and E1 would mask the signal, thereby allowing transport of the heterodimer to the Golgi complex (Probable). {ECO:0000305|PubMed:2845137, ECO:0000305|PubMed:7749196, ECO:0000305|PubMed:8468347, ECO:0000305|PubMed:9311850}.
Interaction partners:
Sequence:
MASTTPITMEDLQKALEAQSRALRAGLAAGASQSRRPRPPRQRDSSTSGDDSGRDSGGPRRRRGNRGRGQRKDWSRAPPPPEERQESRSQTPAPKPSRAPPQQPQPPRMQTGRGGSAPRPELGPPTNPFQAAVARGLRPPLHDPDTEAPTEACVTSWLWSEGEGAVFYRVDLHFTNLGTPPLDEDGRWDPALMYNPCGPEPPAHVVRAYNQPAGDVRGVWGKGERTYAEQDFRVGGTRWHRLLRMPVRGLDGDTAPLPPHTTERIETRSARHPWRIRFGAPQAFLAGLLLAAVAVGTARAGLQPRADMAAPPMPPQPPRAHGQHYGHHHHQLPFLGHDGHHGGTLRVGQHHRNASDVLPGHWLQGGWGCYNLSDWHQGTHVCHTKHMDFWCVEHDRPPPATPTSLTTAANSTTAATPATAPPPCHAGLNDSCGGFLSGCGPMRLRHGADTRCGRLICGLSTTAQYPPTRFGCAMRWGLPPWELVVLTARPEDGWTCRGVPAHPGTRCPELVSPMGRATCSPASALWLATANALSLDHAFAAFVLLVPWVLIFMVCRRACRRRGAAAALTAVVLQGYNPPAYGEEAFTYLCTAPGCATQTPVPVRLAGVRFESKIVDGGCFAPWDLEATGACICEIPTDVSCEGLGAWVPTAPCARIWNGTQRACTFWAVNAYSSGGYAQLASYFNPGGSYYKQYHPTACEVEPAFGHSDAACWGFPTDTVMSVFALASYVQHPHKTVRVKFHTETRTVWQLSVAGVSCNVTTEHPFCNTPHGQLEVQVPPDPGDLVEYIMNYTGNQQSRWGLGSPNCHGPDWASPVCQRHSPDCSRLVGATPERPRLRLVDADDPLLRTAPGPGEVWVTPVIGSQARKCGLHIRAGPYGHATVEMPEWIHAHTTSDPWHPPGPLGLKFKTVRPVALPRALAPPRNVRVTGCYQCGTPALVEGLAPGGGNCHLTVNGEDVGAFPPGKFVTAALLNTPPPYQVSCGGESDRASARVIDPAAQSFTGVVYGTHTTAVSETRQTWAEWAAAHWWQLTLGAICALLLAGLLACCAKCLYYLRGAIAPR