ID A16_VACCW Reviewed; 377 AA. AC P16710; Q80HV5; DT 01-AUG-1990, integrated into UniProtKB/Swiss-Prot. DT 23-JAN-2007, sequence version 4. DT 02-JUN-2021, entry version 82. DE RecName: Full=Virion membrane protein A16; GN OrderedLocusNames=VACWR136; ORFNames=A16L; OS Vaccinia virus (strain Western Reserve) (VACV) (Vaccinia virus (strain OS WR)). OC Viruses; Varidnaviria; Bamfordvirae; Nucleocytoviricota; Pokkesviricetes; OC Chitovirales; Poxviridae; Chordopoxvirinae; Orthopoxvirus; Vaccinia virus. OX NCBI_TaxID=10254; OH NCBI_TaxID=9913; Bos taurus (Bovine). RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RA Esposito J.J., Frace A.M., Sammons S.A., Olsen-Rasmussen M., Osborne J., RA Wohlhueter R.; RT "Sequencing of the coding region of Vaccinia-WR to an average 9-fold RT redundancy and an error rate of 0.16/10kb."; RL Submitted (FEB-2003) to the EMBL/GenBank/DDBJ databases. RN [2] RP NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 1-275. RX PubMed=2370683; DOI=10.1128/jvi.64.8.3853-3863.1990; RA Pacha R.F., Meis R.J., Condit R.C.; RT "Structure and expression of the vaccinia virus gene which prevents virus- RT induced breakdown of RNA."; RL J. Virol. 64:3853-3863(1990). RN [3] RP MYRISTOYLATION AT GLY-2, SUBCELLULAR LOCATION, AND MUTAGENESIS OF GLY-2. RX PubMed=9188589; DOI=10.1128/jvi.71.7.5218-5226.1997; RA Martin K.H., Grosenbach D.W., Franke C.A., Hruby D.E.; RT "Identification and analysis of three myristylated vaccinia virus late RT proteins."; RL J. Virol. 71:5218-5226(1997). RN [4] RP IDENTIFICATION IN A COMPLEX WITH A21; A28; G3; G9; H2; J5 AND L5. RX PubMed=16339313; DOI=10.1073/pnas.0509239102; RA Senkevich T.G., Ojeda S., Townsley A., Nelson G.E., Moss B.; RT "Poxvirus multiprotein entry-fusion complex."; RL Proc. Natl. Acad. Sci. U.S.A. 102:18572-18577(2005). RN [5] RP FUNCTION, DISULFIDE BONDS, INDUCTION, AND TOPOLOGY. RX PubMed=16352530; DOI=10.1128/jvi.80.1.51-61.2006; RA Ojeda S., Senkevich T.G., Moss B.; RT "Entry of vaccinia virus and cell-cell fusion require a highly conserved RT cysteine-rich membrane protein encoded by the A16L gene."; RL J. Virol. 80:51-61(2006). RN [6] RP INTERACTION WITH G9. RX PubMed=18353946; DOI=10.1128/jvi.00162-08; RA Wagenaar T.R., Ojeda S., Moss B.; RT "Vaccinia virus A56/K2 fusion regulatory protein interacts with the A16 and RT G9 subunits of the entry fusion complex."; RL J. Virol. 82:5153-5160(2008). CC -!- FUNCTION: Envelope protein part of the entry-fusion complex responsible CC for the virus membrane fusion with host cell membrane during virus CC entry. Also plays a role in cell-cell fusion (syncytium formation). CC {ECO:0000269|PubMed:16352530}. CC -!- SUBUNIT: Part of a stable entry-fusion complex (EFC) which is at least CC composed of proteins A16, A21, A28, G3, G9, H2, J5, and L5. Formation CC of the viral membrane is necessary for the assembly of the complex. CC Interacts with G9. {ECO:0000269|PubMed:16339313, CC ECO:0000269|PubMed:18353946}. CC -!- SUBCELLULAR LOCATION: Virion membrane {ECO:0000305}; Single-pass type CC II membrane protein {ECO:0000305}. Note=Component of the mature virion CC (MV) membrane (Probable). The mature virion is located in the cytoplasm CC of infected cells and is probably released by cell lysis. CC {ECO:0000269|PubMed:9188589, ECO:0000305}. CC -!- INDUCTION: Expressed in the late phase of the viral replicative cycle. CC {ECO:0000269|PubMed:16352530}. CC -!- PTM: Most cysteines are linked by disulfide bonds. They are created by CC the viral disulfide bond formation pathway, a poxvirus-specific redox CC pathway that operates on the cytoplasmic side of the MV membranes. CC -!- SIMILARITY: Belongs to the poxviridae A16/G9/J5 family. {ECO:0000305}. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; AY243312; AAO89415.1; -; Genomic_DNA. DR EMBL; M32064; AAA48348.2; -; Genomic_DNA. DR PIR; A36415; A36415. DR RefSeq; YP_233018.1; NC_006998.1. DR IntAct; P16710; 1. DR MINT; P16710; -. DR iPTMnet; P16710; -. DR DNASU; 3707666; -. DR GeneID; 3707666; -. DR KEGG; vg:3707666; -. DR Proteomes; UP000000344; Genome. DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW. DR GO; GO:0019031; C:viral envelope; IEA:UniProtKB-KW. DR GO; GO:0055036; C:virion membrane; IEA:UniProtKB-SubCell. DR GO; GO:0039663; P:membrane fusion involved in viral entry into host cell; IEA:UniProtKB-KW. DR InterPro; IPR004251; Pox_virus_G9/A16. DR Pfam; PF03003; Pox_G9-A16; 1. PE 1: Evidence at protein level; KW Disulfide bond; Fusion of virus membrane with host membrane; Late protein; KW Lipoprotein; Membrane; Myristate; Reference proteome; Signal-anchor; KW Transmembrane; Transmembrane helix; Viral envelope protein; KW Viral penetration into host cytoplasm; Virion; Virus entry into host cell. FT INIT_MET 1 FT /note="Removed; by host" FT CHAIN 2..377 FT /note="Virion membrane protein A16" FT /id="PRO_0000099253" FT TOPO_DOM 2..342 FT /note="Virion surface" FT /evidence="ECO:0000255" FT TRANSMEM 343..363 FT /note="Helical; Signal-anchor for type II membrane protein" FT /evidence="ECO:0000255" FT TOPO_DOM 364..377 FT /note="Intravirion" FT /evidence="ECO:0000255" FT LIPID 2 FT /note="N-myristoyl glycine; by host" FT /evidence="ECO:0000269|PubMed:9188589" FT MUTAGEN 2 FT /note="G->A: Complete loss of myristoylation." FT /evidence="ECO:0000269|PubMed:9188589" SQ SEQUENCE 377 AA; 43425 MW; EE79C44446B542FA CRC64; MGAAVTLNRI KIAPGIADIR DKYMELGFNY PEYNRAVKFA EESYTYYYET SPGEIKPKFC LIDGMSIDHC SSFIVPEFAK QYVLIHGEPC SSFKFRPGSL IYYQNEVTPE YIKDLKHATD YIASGQRCHF IKKDYLLGDS DSVAKCCSKT NTKHCPKIFN NNYKTEHCDD FMTGFCRNDP GNPNCLEWLR AKRKPAMSTY SDICSKHMDA RYCSEFIRII RPDYFTFGDT ALYVFCNDHK GNRNCWCANY PKSNSGDKYL GPRVCWLHEC TDESRDRKWL YYNQDVQRTR CKYVGCTINV NSLALKNSQA ELTSNCTRTT SAVGDVHPGE PVVKDKIKLP TWLGAAITLV VISVIFYFIS IYSRPKIKTN DINVRRR //