POLG_POL1S
ID POLG_POL1S Reviewed; 2209 AA.
AC P03301; Q84881; Q84882; Q84883; Q84884; Q84885; Q84886; Q84887; Q84888;
AC Q84889; Q84890;
DT 21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 3.
DT 03-AUG-2022, entry version 186.
DE RecName: Full=Genome polyprotein;
DE Contains:
DE RecName: Full=P1;
DE Contains:
DE RecName: Full=Capsid protein VP0;
DE AltName: Full=VP4-VP2;
DE Contains:
DE RecName: Full=Capsid protein VP4;
DE AltName: Full=P1A;
DE AltName: Full=Virion protein 4;
DE Contains:
DE RecName: Full=Capsid protein VP2;
DE AltName: Full=P1B;
DE AltName: Full=Virion protein 2;
DE Contains:
DE RecName: Full=Capsid protein VP3;
DE AltName: Full=P1C;
DE AltName: Full=Virion protein 3;
DE Contains:
DE RecName: Full=Capsid protein VP1;
DE AltName: Full=P1D;
DE AltName: Full=Virion protein 1;
DE Contains:
DE RecName: Full=P2;
DE Contains:
DE RecName: Full=Protease 2A;
DE Short=P2A;
DE EC=3.4.22.29 {ECO:0000250|UniProtKB:P03300};
DE AltName: Full=Picornain 2A;
DE AltName: Full=Protein 2A;
DE Contains:
DE RecName: Full=Protein 2B;
DE Short=P2B;
DE Contains:
DE RecName: Full=Protein 2C;
DE Short=P2C;
DE EC=3.6.1.15 {ECO:0000250|UniProtKB:P03300};
DE Contains:
DE RecName: Full=P3;
DE Contains:
DE RecName: Full=Protein 3AB;
DE Contains:
DE RecName: Full=Protein 3A;
DE Short=P3A;
DE Contains:
DE RecName: Full=Viral protein genome-linked;
DE Short=VPg;
DE AltName: Full=Protein 3B;
DE Short=P3B;
DE Contains:
DE RecName: Full=Protein 3CD;
DE EC=3.4.22.28;
DE Contains:
DE RecName: Full=Protease 3C {ECO:0000255|PROSITE-ProRule:PRU01222};
DE EC=3.4.22.28 {ECO:0000255|PROSITE-ProRule:PRU01222};
DE AltName: Full=Picornain 3C {ECO:0000255|PROSITE-ProRule:PRU01222};
DE Short=P3C {ECO:0000255|PROSITE-ProRule:PRU01222};
DE Contains:
DE RecName: Full=RNA-directed RNA polymerase {ECO:0000255|PROSITE-ProRule:PRU00539};
DE Short=RdRp;
DE EC=2.7.7.48 {ECO:0000255|PROSITE-ProRule:PRU00539};
DE AltName: Full=3D polymerase;
DE Short=3Dpol;
DE AltName: Full=Protein 3D;
DE Short=3D;
OS Poliovirus type 1 (strain Sabin).
OC Viruses; Riboviria; Orthornavirae; Pisuviricota; Pisoniviricetes;
OC Picornavirales; Picornaviridae; Enterovirus; Enterovirus C.
OX NCBI_TaxID=12082;
OH NCBI_TaxID=9606; Homo sapiens (Human).
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC RNA].
RX PubMed=6310545; DOI=10.1073/pnas.79.19.5793;
RA Nomoto A., Omata T., Toyoda H., Kuge S., Horie H., Kataoka Y., Genba Y.,
RA Nakano Y., Imura N.;
RT "Complete nucleotide sequence of the attenuated poliovirus Sabin 1 strain
RT genome.";
RL Proc. Natl. Acad. Sci. U.S.A. 79:5793-5797(1982).
RN [2]
RP PROTEIN SEQUENCE OF 882-905, PROTEOLYTIC CLEAVAGE (GENOME POLYPROTEIN), AND
RP FUNCTION (PROTEASE 2A).
RX PubMed=3011278; DOI=10.1016/0092-8674(86)90790-7;
RA Toyoda H., Nicklin M.J., Murray M.G., Anderson C.W., Dunn J.J.,
RA Studier F.W., Wimmer E.;
RT "A second virus-encoded proteinase involved in proteolytic processing of
RT poliovirus polyprotein.";
RL Cell 45:761-770(1986).
RN [3]
RP ACTIVE SITE (PROTEASE 3C), AND MUTAGENESIS OF HIS-1605; GLU-1636; ASP-1650
RP AND CYS-1712.
RX PubMed=1848550; DOI=10.1016/s0021-9258(19)67610-6;
RA Haemmerle T., Hellen C.U.T., Wimmer E.;
RT "Site-directed mutagenesis of the putative catalytic triad of poliovirus 3C
RT proteinase.";
RL J. Biol. Chem. 266:5412-5416(1991).
RN [4]
RP FUNCTION (PROTEASE 2A).
RX PubMed=30867299; DOI=10.1128/jvi.00222-19;
RA Visser L.J., Langereis M.A., Rabouw H.H., Wahedi M., Muntjewerff E.M.,
RA de Groot R.J., van Kuppeveld F.J.M.;
RT "Essential Role of Enterovirus 2A Protease in Counteracting Stress Granule
RT Formation and the Induction of Type I Interferon.";
RL J. Virol. 93:0-0(2019).
CC -!- FUNCTION: [Capsid protein VP1]: Forms an icosahedral capsid of pseudo
CC T=3 symmetry with capsid proteins VP2 and VP3 (By similarity). The
CC capsid is 300 Angstroms in diameter, composed of 60 copies of each
CC capsid protein and enclosing the viral positive strand RNA genome (By
CC similarity). Capsid protein VP1 mainly forms the vertices of the capsid
CC (By similarity). Capsid protein VP1 interacts with host cell receptor
CC PVR to provide virion attachment to target host cells (By similarity).
CC This attachment induces virion internalization predominantly through
CC clathrin- and caveolin-independent endocytosis in Hela cells and
CC through caveolin-mediated endocytosis in brain microvascular
CC endothelial cells (By similarity). Tyrosine kinases are probably
CC involved in the entry process (By similarity). Virus binding to PVR
CC induces increased junctional permeability and rearrangement of
CC junctional proteins (By similarity). Modulation of endothelial tight
CC junctions, as well as cytolytic infection of endothelial cells
CC themselves, may result in loss of endothelial integrity which may help
CC the virus to reach the CNS (By similarity). After binding to its
CC receptor, the capsid undergoes conformational changes (By similarity).
CC Capsid protein VP1 N-terminus (that contains an amphipathic alpha-
CC helix) and capsid protein VP4 are externalized (By similarity).
CC Together, they shape a pore in the host membrane through which viral
CC genome is translocated to host cell cytoplasm (By similarity).
CC {ECO:0000250|UniProtKB:P03300}.
CC -!- FUNCTION: [Capsid protein VP2]: Forms an icosahedral capsid of pseudo
CC T=3 symmetry with capsid proteins VP2 and VP3 (By similarity). The
CC capsid is 300 Angstroms in diameter, composed of 60 copies of each
CC capsid protein and enclosing the viral positive strand RNA genome (By
CC similarity). {ECO:0000250|UniProtKB:P03300}.
CC -!- FUNCTION: [Capsid protein VP3]: Forms an icosahedral capsid of pseudo
CC T=3 symmetry with capsid proteins VP2 and VP3 (By similarity). The
CC capsid is 300 Angstroms in diameter, composed of 60 copies of each
CC capsid protein and enclosing the viral positive strand RNA genome (By
CC similarity). {ECO:0000250|UniProtKB:P03300}.
CC -!- FUNCTION: [Capsid protein VP4]: Lies on the inner surface of the capsid
CC shell (By similarity). After binding to the host receptor, the capsid
CC undergoes conformational changes (By similarity). Capsid protein VP4 is
CC released, Capsid protein VP1 N-terminus is externalized, and together,
CC they shape a pore in the host membrane through which the viral genome
CC is translocated into the host cell cytoplasm (By similarity).
CC {ECO:0000250|UniProtKB:P03300}.
CC -!- FUNCTION: [Capsid protein VP0]: Component of immature procapsids, which
CC is cleaved into capsid proteins VP4 and VP2 after maturation (By
CC similarity). Allows the capsid to remain inactive before the maturation
CC step (By similarity). {ECO:0000250|UniProtKB:P03300}.
CC -!- FUNCTION: [Protease 2A]: Cysteine protease that cleaves viral
CC polyprotein and specific host proteins (PubMed:3011278). It is
CC responsible for the autocatalytic cleavage between the P1 and P2
CC regions, which is the first cleavage occurring in the polyprotein (By
CC similarity). Cleaves also the host translation initiation factor
CC EIF4G1, in order to shut down the capped cellular mRNA translation (By
CC similarity). Inhibits the host nucleus-cytoplasm protein and RNA
CC trafficking by cleaving host members of the nuclear pores including
CC NUP98, NUP62 and NUP153 (By similarity). Counteracts stress granule
CC formation probably by antagonizing its assembly or promoting its
CC dissassembly (PubMed:30867299). Cleaves and inhibits host IFIH1/MDA5,
CC thereby inhibiting the type-I IFN production and the establishment of
CC the antiviral state (By similarity). Cleaves and inhibits host MAVS,
CC thereby inhibiting the type-I IFN production and the establishment of
CC the antiviral state (By similarity). {ECO:0000250|UniProtKB:P03300,
CC ECO:0000269|PubMed:3011278, ECO:0000269|PubMed:30867299}.
CC -!- FUNCTION: [Protein 2B]: Plays an essential role in the virus
CC replication cycle by acting as a viroporin. Creates a pore in the host
CC reticulum endoplasmic and as a consequence releases Ca2+ in the
CC cytoplasm of infected cell. In turn, high levels of cytoplasmic calcium
CC may trigger membrane trafficking and transport of viral ER-associated
CC proteins to viroplasms, sites of viral genome replication.
CC {ECO:0000250|UniProtKB:P03300}.
CC -!- FUNCTION: [Protein 2C]: Induces and associates with structural
CC rearrangements of intracellular membranes. Displays RNA-binding,
CC nucleotide binding and NTPase activities. May play a role in virion
CC morphogenesis and viral RNA encapsidation by interacting with the
CC capsid protein VP3. {ECO:0000250|UniProtKB:P03300}.
CC -!- FUNCTION: [Protein 3AB]: Localizes the viral replication complex to the
CC surface of membranous vesicles. Together with protein 3CD binds the
CC Cis-Active RNA Element (CRE) which is involved in RNA synthesis
CC initiation. Acts as a cofactor to stimulate the activity of 3D
CC polymerase, maybe through a nucleid acid chaperone activity.
CC {ECO:0000250|UniProtKB:P03300}.
CC -!- FUNCTION: [Protein 3A]: Localizes the viral replication complex to the
CC surface of membranous vesicles. It inhibits host cell endoplasmic
CC reticulum-to-Golgi apparatus transport and causes the disassembly of
CC the Golgi complex, possibly through GBF1 interaction (By similarity).
CC This would result in depletion of MHC, trail receptors and IFN
CC receptors at the host cell surface (By similarity). Plays an essential
CC role in viral RNA replication by recruiting ACBD3 and PI4KB at the
CC viral replication sites, thereby allowing the formation of the
CC rearranged membranous structures where viral replication takes place
CC (By similarity). {ECO:0000250|UniProtKB:P03300}.
CC -!- FUNCTION: [Viral protein genome-linked]: Acts as a primer for viral RNA
CC replication and remains covalently bound to viral genomic RNA. VPg is
CC uridylylated prior to priming replication into VPg-pUpU (By
CC similarity). The oriI viral genomic sequence may act as a template for
CC this. The VPg-pUpU is then used as primer on the genomic RNA poly(A) by
CC the RNA-dependent RNA polymerase to replicate the viral genome (By
CC similarity). Following genome release from the infecting virion in the
CC cytoplasm, the VPg-RNA linkage is probably removed by host TDP2 (By
CC similarity). During the late stage of the replication cycle, host TDP2
CC is excluded from sites of viral RNA synthesis and encapsidation,
CC allowing for the generation of progeny virions (By similarity).
CC {ECO:0000250|UniProtKB:P03300}.
CC -!- FUNCTION: [Protein 3CD]: Involved in the viral replication complex and
CC viral polypeptide maturation. It exhibits protease activity with a
CC specificity and catalytic efficiency that is different from protease
CC 3C. Protein 3CD lacks polymerase activity. Protein 3CD binds to the
CC 5'UTR of the viral genome. {ECO:0000250|UniProtKB:P03300}.
CC -!- FUNCTION: [Protease 3C]: Major viral protease that mediates proteolytic
CC processing of the polyprotein (By similarity). Cleaves host EIF5B,
CC contributing to host translation shutoff (By similarity). Cleaves also
CC host PABPC1, contributing to host translation shutoff (By similarity).
CC Cleaves host DDX58/RIG-I and thus contributes to the inhibition of type
CC I interferon production (By similarity). Cleaves host NLRP1, triggers
CC host N-glycine-mediated degradation of the autoinhibitory NLRP1 N-
CC terminal fragment (By similarity). {ECO:0000250|UniProtKB:P03300,
CC ECO:0000250|UniProtKB:P03303}.
CC -!- FUNCTION: [RNA-directed RNA polymerase]: Replicates the viral genomic
CC RNA on the surface of intracellular membranes. May form linear arrays
CC of subunits that propagate along a strong head-to-tail interaction
CC called interface-I. Covalently attaches UMP to a tyrosine of VPg, which
CC is used to prime RNA synthesis. The positive stranded RNA genome is
CC first replicated at virus induced membranous vesicles, creating a dsRNA
CC genomic replication form. This dsRNA is then used as template to
CC synthesize positive stranded RNA genomes. ss(+)RNA genomes are either
CC translated, replicated or encapsidated. {ECO:0000250|UniProtKB:P03300}.
CC -!- CATALYTIC ACTIVITY: [Protein 2C]:
CC Reaction=a ribonucleoside 5'-triphosphate + H2O = a ribonucleoside 5'-
CC diphosphate + H(+) + phosphate; Xref=Rhea:RHEA:23680,
CC ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:57930, ChEBI:CHEBI:61557; EC=3.6.1.15;
CC Evidence={ECO:0000250|UniProtKB:P03300};
CC -!- CATALYTIC ACTIVITY: [Protease 2A]:
CC Reaction=Selective cleavage of Tyr-|-Gly bond in the picornavirus
CC polyprotein.; EC=3.4.22.29; Evidence={ECO:0000250|UniProtKB:P03300};
CC -!- CATALYTIC ACTIVITY: [RNA-directed RNA polymerase]:
CC Reaction=a ribonucleoside 5'-triphosphate + RNA(n) = diphosphate +
CC RNA(n+1); Xref=Rhea:RHEA:21248, Rhea:RHEA-COMP:14527, Rhea:RHEA-
CC COMP:17342, ChEBI:CHEBI:33019, ChEBI:CHEBI:61557, ChEBI:CHEBI:140395;
CC EC=2.7.7.48; Evidence={ECO:0000255|PROSITE-ProRule:PRU00539};
CC -!- CATALYTIC ACTIVITY: [Protease 3C]:
CC Reaction=Selective cleavage of Gln-|-Gly bond in the poliovirus
CC polyprotein. In other picornavirus reactions Glu may be substituted
CC for Gln, and Ser or Thr for Gly.; EC=3.4.22.28;
CC Evidence={ECO:0000255|PROSITE-ProRule:PRU01222};
CC -!- COFACTOR: [RNA-directed RNA polymerase]:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000250|UniProtKB:P03300};
CC Note=Binds 2 magnesium ions that constitute a dinuclear catalytic metal
CC center (By similarity). The magnesium ions are not prebound but only
CC present for catalysis (By similarity). Requires the presence of 3CDpro
CC or 3CPro (By similarity). {ECO:0000250|UniProtKB:P03300,
CC ECO:0000250|UniProtKB:P03313};
CC -!- ACTIVITY REGULATION: [RNA-directed RNA polymerase]: Replication or
CC transcription is subject to high level of random mutations by the
CC nucleotide analog ribavirin. {ECO:0000250|UniProtKB:P03300}.
CC -!- SUBUNIT: [Capsid protein VP0]: Interacts with capsid protein VP1 and
CC capsid protein VP3 to form heterotrimeric protomers.
CC {ECO:0000250|UniProtKB:P03300}.
CC -!- SUBUNIT: [Capsid protein VP1]: Interacts with capsid protein VP0, and
CC capsid protein VP3 to form heterotrimeric protomers (By similarity).
CC Interacts with human PVR (By similarity). Five protomers subsequently
CC associate to form pentamers which serve as building blocks for the
CC capsid (By similarity). Interacts with capsid protein VP2, capsid
CC protein VP3 and capsid protein VP4 following cleavage of capsid protein
CC VP0 (By similarity). {ECO:0000250|UniProtKB:P03300}.
CC -!- SUBUNIT: [Capsid protein VP2]: Interacts with capsid protein VP1 and
CC capsid protein VP3 in the mature capsid.
CC {ECO:0000250|UniProtKB:P03300}.
CC -!- SUBUNIT: [Capsid protein VP3]: Interacts with capsid protein VP0 and
CC capsid protein VP1 to form heterotrimeric protomers (By similarity).
CC Five protomers subsequently associate to form pentamers which serve as
CC building blocks for the capsid (By similarity). Interacts with capsid
CC protein VP4 in the mature capsid (By similarity). Interacts with
CC protein 2C; this interaction may be important for virion morphogenesis
CC (By similarity). {ECO:0000250|UniProtKB:P03300}.
CC -!- SUBUNIT: [Capsid protein VP4]: Interacts with capsid protein VP1 and
CC capsid protein VP3. {ECO:0000250|UniProtKB:P03300}.
CC -!- SUBUNIT: [Protease 2A]: Homodimer. {ECO:0000250|UniProtKB:P04936}.
CC -!- SUBUNIT: [Protein 2C]: Homohexamer; forms a hexameric ring structure
CC with 6-fold symmetry characteristic of AAA+ ATPases (By similarity).
CC Interacts (via N-terminus) with host RTN3 (via reticulon domain); this
CC interaction is important for viral replication (By similarity).
CC Interacts with capsid protein VP3; this interaction may be important
CC for virion morphogenesis (By similarity).
CC {ECO:0000250|UniProtKB:P03300}.
CC -!- SUBUNIT: [Protein 3AB]: Interacts with protein 3CD.
CC {ECO:0000250|UniProtKB:P03300}.
CC -!- SUBUNIT: [Protein 3A]: Homodimer (By similarity). Interacts with host
CC GBF1 (By similarity). Interacts (via GOLD domain) with host ACBD3 (via
CC GOLD domain); this interaction allows the formation of a viral protein
CC 3A/ACBD3 heterotetramer with a 2:2 stoichiometry, which will stimulate
CC the recruitment of host PI4KB in order to synthesize PI4P at the viral
CC RNA replication sites (By similarity). {ECO:0000250|UniProtKB:P03300}.
CC -!- SUBUNIT: [Viral protein genome-linked]: Interacts with RNA-directed RNA
CC polymerase. {ECO:0000250|UniProtKB:P03300}.
CC -!- SUBUNIT: [Protein 3CD]: Interacts with protein 3AB and with RNA-
CC directed RNA polymerase. {ECO:0000250|UniProtKB:P03300}.
CC -!- SUBUNIT: [RNA-directed RNA polymerase]: Interacts with Viral protein
CC genome-linked and with protein 3CD. {ECO:0000250|UniProtKB:P03300}.
CC -!- SUBCELLULAR LOCATION: [Capsid protein VP0]: Virion. Host cytoplasm
CC {ECO:0000305}.
CC -!- SUBCELLULAR LOCATION: [Capsid protein VP4]: Virion.
CC -!- SUBCELLULAR LOCATION: [Capsid protein VP2]: Virion
CC {ECO:0000250|UniProtKB:P03300}. Host cytoplasm {ECO:0000305}.
CC -!- SUBCELLULAR LOCATION: [Capsid protein VP3]: Virion
CC {ECO:0000250|UniProtKB:P03300}. Host cytoplasm {ECO:0000305}.
CC -!- SUBCELLULAR LOCATION: [Capsid protein VP1]: Virion
CC {ECO:0000250|UniProtKB:P03300}. Host cytoplasm {ECO:0000305}.
CC -!- SUBCELLULAR LOCATION: [Protein 2B]: Host cytoplasmic vesicle membrane
CC {ECO:0000305}; Peripheral membrane protein {ECO:0000305}; Cytoplasmic
CC side {ECO:0000305}. Note=Probably localizes to the surface of
CC intracellular membrane vesicles that are induced after virus infection
CC as the site for viral RNA replication. These vesicles are derived from
CC the endoplasmic reticulum.
CC -!- SUBCELLULAR LOCATION: [Protein 2C]: Host cytoplasmic vesicle membrane
CC {ECO:0000305}; Peripheral membrane protein {ECO:0000305}; Cytoplasmic
CC side {ECO:0000305}. Note=Probably localizes to the surface of
CC intracellular membrane vesicles that are induced after virus infection
CC as the site for viral RNA replication. These vesicles are derived from
CC the endoplasmic reticulum.
CC -!- SUBCELLULAR LOCATION: [Protein 3A]: Host cytoplasmic vesicle membrane
CC {ECO:0000305}; Peripheral membrane protein {ECO:0000305}; Cytoplasmic
CC side {ECO:0000305}. Note=Probably localizes to the surface of
CC intracellular membrane vesicles that are induced after virus infection
CC as the site for viral RNA replication. These vesicles are derived from
CC the endoplasmic reticulum.
CC -!- SUBCELLULAR LOCATION: [Protein 3AB]: Host cytoplasmic vesicle membrane
CC {ECO:0000305}; Peripheral membrane protein {ECO:0000305}; Cytoplasmic
CC side {ECO:0000305}. Note=Probably localizes to the surface of
CC intracellular membrane vesicles that are induced after virus infection
CC as the site for viral RNA replication. These vesicles are derived from
CC the endoplasmic reticulum.
CC -!- SUBCELLULAR LOCATION: [Viral protein genome-linked]: Virion
CC {ECO:0000250|UniProtKB:P03300}. Host cytoplasm
CC {ECO:0000250|UniProtKB:Q66478}.
CC -!- SUBCELLULAR LOCATION: [Protease 3C]: Host cytoplasm.
CC -!- SUBCELLULAR LOCATION: [Protein 3CD]: Host nucleus
CC {ECO:0000250|UniProtKB:P03300}. Host cytoplasm
CC {ECO:0000250|UniProtKB:P03300}. Host cytoplasmic vesicle membrane
CC {ECO:0000305}; Peripheral membrane protein {ECO:0000305}; Cytoplasmic
CC side {ECO:0000305}. Note=Probably localizes to the surface of
CC intracellular membrane vesicles that are induced after virus infection
CC as the site for viral RNA replication. These vesicles are derived from
CC the endoplasmic reticulum.
CC -!- SUBCELLULAR LOCATION: [RNA-directed RNA polymerase]: Host cytoplasmic
CC vesicle membrane {ECO:0000305}; Peripheral membrane protein
CC {ECO:0000305}; Cytoplasmic side {ECO:0000305}. Note=Probably localizes
CC to the surface of intracellular membrane vesicles that are induced
CC after virus infection as the site for viral RNA replication. These
CC vesicles are derived from the endoplasmic reticulum.
CC -!- DOMAIN: [Protein 2C]: The N-terminus has membrane-binding (By
CC similarity). The N-terminus also displays RNA-binding properties (By
CC similarity). The N-terminus is involved in oligomerization (By
CC similarity). The central part contains an ATPase domain and a C4-type
CC zinc-finger (By similarity). The C-terminus is involved in RNA-binding
CC (By similarity). The extreme C-terminus contains a region involved in
CC oligomerization (By similarity). {ECO:0000250|UniProtKB:P03300}.
CC -!- PTM: [Genome polyprotein]: Specific enzymatic cleavages in vivo by the
CC viral proteases yield processing intermediates and the mature proteins.
CC {ECO:0000269|PubMed:3011278}.
CC -!- PTM: [Capsid protein VP0]: Myristoylation is required for the formation
CC of pentamers during virus assembly. Further assembly of 12 pentamers
CC and a molecule of genomic RNA generates the provirion.
CC {ECO:0000250|UniProtKB:P03300}.
CC -!- PTM: [Capsid protein VP0]: During virion maturation, immature virions
CC are rendered infectious following cleavage of VP0 into VP4 and VP2.
CC This maturation seems to be an autocatalytic event triggered by the
CC presence of RNA in the capsid and it is followed by a conformational
CC change infectious virion. {ECO:0000250|UniProtKB:P03300}.
CC -!- PTM: [Capsid protein VP4]: Myristoylation is required during RNA
CC encapsidation and formation of the mature virus particle.
CC {ECO:0000250|UniProtKB:P03300}.
CC -!- PTM: [Viral protein genome-linked]: VPg is uridylylated by the
CC polymerase into VPg-pUpU. This acts as a nucleotide-peptide primer for
CC the genomic RNA replication. {ECO:0000250|UniProtKB:P03300}.
CC -!- MISCELLANEOUS: This virus is a live vaccine strain derived from the
CC mahoney strain by spontaneous mutations during the attenuation process.
CC {ECO:0000305}.
CC -!- SIMILARITY: Belongs to the picornaviruses polyprotein family.
CC {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; V01150; CAA24465.1; -; Genomic_RNA.
DR PIR; A03899; GNNY3P.
DR BMRB; P03301; -.
DR SMR; P03301; -.
DR IntAct; P03301; 2.
DR MINT; P03301; -.
DR MEROPS; C03.020; -.
DR Proteomes; UP000000478; Genome.
DR GO; GO:0044162; C:host cell cytoplasmic vesicle membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0042025; C:host cell nucleus; IEA:UniProtKB-SubCell.
DR GO; GO:0044385; C:integral to membrane of host cell; IEA:UniProtKB-KW.
DR GO; GO:0016020; C:membrane; IEA:UniProtKB-KW.
DR GO; GO:0039618; C:T=pseudo3 icosahedral viral capsid; IEA:UniProtKB-KW.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR GO; GO:0004197; F:cysteine-type endopeptidase activity; IEA:UniProtKB-EC.
DR GO; GO:0005216; F:ion channel activity; IEA:UniProtKB-KW.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0017111; F:nucleoside-triphosphatase activity; IEA:InterPro.
DR GO; GO:0003723; F:RNA binding; IEA:UniProtKB-KW.
DR GO; GO:0003724; F:RNA helicase activity; IEA:InterPro.
DR GO; GO:0003968; F:RNA-directed 5'-3' RNA polymerase activity; IEA:UniProtKB-KW.
DR GO; GO:0005198; F:structural molecule activity; IEA:InterPro.
DR GO; GO:0006260; P:DNA replication; IEA:UniProtKB-KW.
DR GO; GO:0039520; P:induction by virus of host autophagy; ISS:UniProtKB.
DR GO; GO:0039707; P:pore formation by virus in membrane of host cell; IEA:UniProtKB-KW.
DR GO; GO:0044694; P:pore-mediated entry of viral genome into host cell; IEA:UniProtKB-KW.
DR GO; GO:0039690; P:positive stranded viral RNA replication; ISS:UniProtKB.
DR GO; GO:0051259; P:protein complex oligomerization; IEA:UniProtKB-KW.
DR GO; GO:0006508; P:proteolysis; IEA:UniProtKB-KW.
DR GO; GO:0019065; P:receptor-mediated endocytosis of virus by host cell; IEA:UniProtKB-KW.
DR GO; GO:0018144; P:RNA-protein covalent cross-linking; IEA:UniProtKB-KW.
DR GO; GO:0039657; P:suppression by virus of host gene expression; IEA:UniProtKB-KW.
DR GO; GO:0039522; P:suppression by virus of host mRNA export from nucleus; ISS:UniProtKB.
DR GO; GO:0039611; P:suppression by virus of host translation initiation factor activity; ISS:UniProtKB.
DR GO; GO:0039554; P:suppression by virus of host viral-induced cytoplasmic pattern recognition receptor signaling pathway via inhibition of host MDA-5 activity; IEA:UniProtKB-KW.
DR GO; GO:0039540; P:suppression by virus of host viral-induced cytoplasmic pattern recognition receptor signaling pathway via inhibition of host RIG-I activity; IEA:UniProtKB-KW.
DR GO; GO:0039545; P:suppression by virus of host viral-induced cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity; IEA:UniProtKB-KW.
DR GO; GO:0006351; P:transcription, DNA-templated; IEA:InterPro.
DR GO; GO:0039694; P:viral RNA genome replication; IEA:InterPro.
DR GO; GO:0019062; P:virion attachment to host cell; IEA:UniProtKB-KW.
DR CDD; cd00205; rhv_like; 3.
DR Gene3D; 2.40.10.10; -; 4.
DR Gene3D; 2.60.120.20; -; 3.
DR Gene3D; 3.30.70.270; -; 1.
DR Gene3D; 6.10.20.20; -; 1.
DR InterPro; IPR043502; DNA/RNA_pol_sf.
DR InterPro; IPR000605; Helicase_SF3_ssDNA/RNA_vir.
DR InterPro; IPR014759; Helicase_SF3_ssRNA_vir.
DR InterPro; IPR027417; P-loop_NTPase.
DR InterPro; IPR014838; P3A.
DR InterPro; IPR036203; P3A_soluble_dom.
DR InterPro; IPR044067; PCV_3C_PRO.
DR InterPro; IPR000081; Peptidase_C3.
DR InterPro; IPR000199; Peptidase_C3A/C3B_picornavir.
DR InterPro; IPR009003; Peptidase_S1_PA.
DR InterPro; IPR043504; Peptidase_S1_PA_chymotrypsin.
DR InterPro; IPR003138; Pico_P1A.
DR InterPro; IPR002527; Pico_P2B.
DR InterPro; IPR001676; Picornavirus_capsid.
DR InterPro; IPR043128; Rev_trsase/Diguanyl_cyclase.
DR InterPro; IPR033703; Rhv-like.
DR InterPro; IPR001205; RNA-dir_pol_C.
DR InterPro; IPR007094; RNA-dir_pol_PSvirus.
DR InterPro; IPR029053; Viral_coat.
DR Pfam; PF08727; P3A; 1.
DR Pfam; PF00548; Peptidase_C3; 1.
DR Pfam; PF02226; Pico_P1A; 1.
DR Pfam; PF00947; Pico_P2A; 1.
DR Pfam; PF01552; Pico_P2B; 1.
DR Pfam; PF00680; RdRP_1; 1.
DR Pfam; PF00073; Rhv; 3.
DR Pfam; PF00910; RNA_helicase; 1.
DR SUPFAM; SSF50494; SSF50494; 2.
DR SUPFAM; SSF52540; SSF52540; 1.
DR SUPFAM; SSF56672; SSF56672; 1.
DR SUPFAM; SSF89043; SSF89043; 1.
DR PROSITE; PS51874; PCV_3C_PRO; 1.
DR PROSITE; PS50507; RDRP_SSRNA_POS; 1.
DR PROSITE; PS51218; SF3_HELICASE_2; 1.
PE 1: Evidence at protein level;
KW Activation of host autophagy by virus; ATP-binding; Autocatalytic cleavage;
KW Capsid protein;
KW Clathrin- and caveolin-independent endocytosis of virus by host;
KW Covalent protein-RNA linkage; Direct protein sequencing; DNA replication;
KW Eukaryotic host gene expression shutoff by virus;
KW Eukaryotic host transcription shutoff by virus;
KW Eukaryotic host translation shutoff by virus; Helicase; Host cytoplasm;
KW Host cytoplasmic vesicle; Host gene expression shutoff by virus;
KW Host membrane; Host mRNA suppression by virus; Host nucleus;
KW Host-virus interaction; Hydrolase;
KW Inhibition of eukaryotic host transcription initiation by virus;
KW Inhibition of host innate immune response by virus;
KW Inhibition of host MAVS by virus; Inhibition of host MDA5 by virus;
KW Inhibition of host mRNA nuclear export by virus;
KW Inhibition of host RIG-I by virus; Inhibition of host RLR pathway by virus;
KW Ion channel; Ion transport; Lipoprotein; Magnesium; Membrane;
KW Metal-binding; Myristate; Nucleotide-binding; Nucleotidyltransferase;
KW Phosphoprotein; Pore-mediated penetration of viral genome into host cell;
KW Protease; Repeat; RNA-binding; RNA-directed RNA polymerase;
KW T=pseudo3 icosahedral capsid protein; Thiol protease; Transferase;
KW Transport; Viral attachment to host cell; Viral immunoevasion;
KW Viral ion channel; Viral penetration into host cytoplasm;
KW Viral RNA replication; Virion; Virus endocytosis by host;
KW Virus entry into host cell; Zinc; Zinc-finger.
FT INIT_MET 1
FT /note="Removed; by host"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT CHAIN 2..2209
FT /note="Genome polyprotein"
FT /id="PRO_0000426596"
FT CHAIN 2..881
FT /note="P1"
FT /id="PRO_0000426597"
FT CHAIN 2..341
FT /note="Capsid protein VP0"
FT /id="PRO_0000426598"
FT CHAIN 2..69
FT /note="Capsid protein VP4"
FT /id="PRO_0000426599"
FT CHAIN 70..341
FT /note="Capsid protein VP2"
FT /id="PRO_0000426600"
FT CHAIN 342..579
FT /note="Capsid protein VP3"
FT /id="PRO_0000426601"
FT CHAIN 580..881
FT /note="Capsid protein VP1"
FT /id="PRO_0000426602"
FT CHAIN 882..1456
FT /note="P2"
FT /id="PRO_0000426603"
FT CHAIN 882..1030
FT /note="Protease 2A"
FT /id="PRO_0000426604"
FT CHAIN 1031..1127
FT /note="Protein 2B"
FT /id="PRO_0000040096"
FT CHAIN 1128..1456
FT /note="Protein 2C"
FT /id="PRO_0000040097"
FT CHAIN 1457..2209
FT /note="P3"
FT /id="PRO_0000426605"
FT CHAIN 1457..1565
FT /note="Protein 3AB"
FT /id="PRO_0000426606"
FT CHAIN 1457..1543
FT /note="Protein 3A"
FT /id="PRO_0000040098"
FT CHAIN 1544..1565
FT /note="Viral protein genome-linked"
FT /id="PRO_0000426607"
FT CHAIN 1566..2209
FT /note="Protein 3CD"
FT /id="PRO_0000426608"
FT CHAIN 1566..1748
FT /note="Protease 3C"
FT /id="PRO_0000426609"
FT CHAIN 1749..2209
FT /note="RNA-directed RNA polymerase"
FT /id="PRO_0000426610"
FT TOPO_DOM 2..1520
FT /note="Cytoplasmic"
FT /evidence="ECO:0000255"
FT INTRAMEM 1521..1536
FT /evidence="ECO:0000255"
FT TOPO_DOM 1537..2209
FT /note="Cytoplasmic"
FT /evidence="ECO:0000255"
FT DOMAIN 1232..1388
FT /note="SF3 helicase"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00551"
FT DOMAIN 1566..1744
FT /note="Peptidase C3"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01222"
FT DOMAIN 1975..2090
FT /note="RdRp catalytic"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00539"
FT ZN_FING 1396..1413
FT /note="C4-type"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT REGION 580..600
FT /note="Amphipathic alpha-helix"
FT /evidence="ECO:0000255"
FT REGION 1128..1266
FT /note="Oligomerization"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT REGION 1128..1200
FT /note="Membrane-binding"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT REGION 1149..1153
FT /note="RNA-binding"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT REGION 1440..1447
FT /note="RNA-binding"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT REGION 1451..1456
FT /note="Oligomerization"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT ACT_SITE 901
FT /note="For protease 2A activity"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT ACT_SITE 919
FT /note="For protease 2A activity"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT ACT_SITE 990
FT /note="For protease 2A activity"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT ACT_SITE 1605
FT /note="For protease 3C activity"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01222,
FT ECO:0000269|PubMed:1848550"
FT ACT_SITE 1636
FT /note="For protease 3C activity"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01222,
FT ECO:0000269|PubMed:1848550"
FT ACT_SITE 1712
FT /note="For protease 3C activity"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU01222,
FT ECO:0000269|PubMed:1848550"
FT BINDING 936
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="1"
FT /ligand_note="structural"
FT /evidence="ECO:0000250|UniProtKB:Q9QF31"
FT BINDING 938
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="1"
FT /ligand_note="structural"
FT /evidence="ECO:0000250|UniProtKB:Q9QF31"
FT BINDING 996
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="1"
FT /ligand_note="structural"
FT /evidence="ECO:0000250|UniProtKB:Q9QF31"
FT BINDING 998
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="1"
FT /ligand_note="structural"
FT /evidence="ECO:0000250|UniProtKB:Q9QF31"
FT BINDING 1256..1263
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00551"
FT BINDING 1396
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="2"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT BINDING 1399
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="2"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT BINDING 1408
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="2"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT BINDING 1413
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="2"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT BINDING 1981
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /ligand_note="catalytic; for RdRp activity"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT BINDING 1981
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /ligand_note="catalytic; for RdRp activity"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT BINDING 2076
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="1"
FT /ligand_note="catalytic; for RdRp activity"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT BINDING 2076
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /ligand_label="2"
FT /ligand_note="catalytic; for RdRp activity"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT SITE 69..70
FT /note="Cleavage; by autolysis"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT SITE 341..342
FT /note="Cleavage; by protease 3C"
FT /evidence="ECO:0000269|PubMed:3011278"
FT SITE 579..580
FT /note="Cleavage; by protease 3C"
FT /evidence="ECO:0000269|PubMed:3011278"
FT SITE 881..882
FT /note="Cleavage; by autolysis"
FT /evidence="ECO:0000269|PubMed:3011278"
FT SITE 1030..1031
FT /note="Cleavage; by protease 3C"
FT /evidence="ECO:0000269|PubMed:3011278"
FT SITE 1127..1128
FT /note="Cleavage; by protease 3C"
FT /evidence="ECO:0000269|PubMed:3011278"
FT SITE 1152
FT /note="Involved in the interaction with host RTN3"
FT /evidence="ECO:0000250|UniProtKB:Q66478"
FT SITE 1456..1457
FT /note="Cleavage; by protease 3C"
FT /evidence="ECO:0000269|PubMed:3011278"
FT SITE 1543..1544
FT /note="Cleavage; by protease 3C"
FT /evidence="ECO:0000269|PubMed:3011278"
FT SITE 1565..1566
FT /note="Cleavage; by protease 3C"
FT /evidence="ECO:0000269|PubMed:3011278"
FT SITE 1748..1749
FT /note="Cleavage; by protease 3C"
FT /evidence="ECO:0000269|PubMed:3011278"
FT MOD_RES 1546
FT /note="O-(5'-phospho-RNA)-tyrosine"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT LIPID 2
FT /note="N-myristoyl glycine; by host"
FT /evidence="ECO:0000250|UniProtKB:P03300"
FT MUTAGEN 1605
FT /note="H->Y: Complete loss of protease activity."
FT /evidence="ECO:0000269|PubMed:1848550"
FT MUTAGEN 1636
FT /note="E->Q: Complete loss of protease activity."
FT /evidence="ECO:0000269|PubMed:1848550"
FT MUTAGEN 1650
FT /note="D->N: No effect on protease activity; complete loss
FT of autoprocessing ability."
FT /evidence="ECO:0000269|PubMed:1848550"
FT MUTAGEN 1712
FT /note="C->S: Complete loss of protease activity."
FT /evidence="ECO:0000269|PubMed:1848550"
SQ SEQUENCE 2209 AA; 246578 MW; 9EC1EF4D174A28A4 CRC64;
MGAQVSSQKV GAHENSNRAY GGSTINYTTI NYYRDSASNA ASKQDFSQDP SKFTEPIKDV
LIKTSPMLNS PNIEACGYSD RVLQLTLGNS TITTQEAANS VVAYGRWPEY LRDSEANPVD
QPTEPDVAAC RFYTLDTVSW TKESRGWWWK LPDALRDMGL FGQNMYYHYL GRSGYTVHVQ
CNASKFHQGA LGVFAVPEMC LAGDSNTTTM HTSYQNANPG EKGGTFTGTF TPDDNQTSPA
RRFCPVDYLF GNGTLLGNAF VFPHQIINLR TNNCATLVLP YVNSLSIDSM VKHNNWGIAI
LPLAPLNFAS ESSPEIPITL TIAPMCCEFN GLRNITLPRL QGLPVMNTPG SNQYLTADNF
QSPCALPEFD VTPPIDIPGE VKNMMELAEI DTMIPFDLSA KKKNTMEMYR VRLSDKPHTD
DPILCLSLSP ASDPRLSHTM LGEILNYYTH WAGSLKFTFL FCGSMMATGK LLVSYAPPGA
DPPKKRKEAM LGTHVIWDIG LQSSCTMVVP WISNTTYRQT IDDSFTEGGY ISVFYQTRIV
VPLSTPREMD ILGFVSACND FSVRLMRDTT HIEQKALAQG LGQMLESMID NTVRETVGAA
TSRDALPNTE ASGPAHSKEI PALTAVETGA TNPLVPSDTV QTRHVVQHRS RSESSIESFF
ARGACVAIIT VDNSASTKNK DKLFTVWKIT YKDTVQLRRK LEFFTYSRFD MEFTFVVTAN
FTETNNGHAL NQVYQIMYVP PGAPVPEKWD DYTWQTSSNP SIFYTYGTAP ARISVPYVGI
SNAYSHFYDG FSKVPLKDQS AALGDSLYGA ASLNDFGILA VRVVNDHNPT KVTSKIRVYL
KPKHIRVWCP RPPRAVAYYG PGVDYKDGTL TPLSTKDLTT YGFGHQNKAV YTAGYKICNY
HLATQEDLQN AVNVMWNRDL LVTESRAQGT DSIARCNCNA GVYYCESRRK YYPVSFVGPT
FQYMEANNYY PARYQSHMLI GHGFASPGDC GGILRCHHGV IGIITAGGEG LVAFTDIRDL
YAYEEEAMEQ GITNYIESLG AAFGSGFTQQ IGDKITELTN MVTSTITEKL LKNLIKIISS
LVIITRNYED TTTVLATLAL LGCDASPWQW LRKKACDVLE IPYVTKQGDS WLKKFTEACN
AAKGLEWVSN KISKFIDWLK EKIIPQARDK LEFVTKLRQL EMLENQISTI HQSCPSQEHQ
EILFNNVRWL SIQSKRFAPL YAVEAKRIQK LEHTINNYIQ FKSKHRIEPV CLLVHGSPGT
GKSVATNLIA RAIAERENTS TYSLPPDPSH FDGYKQQGVV IMDDLNQNPD GADMKLFCQM
VSTVEFIPPM ASLEEKGILF TSNYVLASTN SSRISPPTVA HSDALARRFA FDMDIQVMNE
YSRDGKLNMA MATEMCKNCH QPANFKRCCP LVCGKAIQLM DKSSRVRYSI DQITTMIINE
RNRRSNIGNC MEALFQGPLQ YKDLKIDIKT SPPPECINDL LQAVDSQEVR DYCEKKGWIV
NITSQVQTER NINRAMTILQ AVTTFAAVAG VVYVMYKLFA GHQGAYTGLP NKKPNVPTIR
TAKVQGPGFD YAVAMAKRNI VTATTSKGEF TMLGVHDNVA ILPTHASPGE SIVIDGKEVE
ILDAKALEDQ AGTNLEITII TLKRNEKFRD IRPHIPTQIT ETNDGVLIVN TSKYPNMYVP
VGAVTEQGYL NLGGRQTART LMYNFPTRAG QCGGVITCTG KVIGMHVGGN GSHGFAAALK
RSYFTQSQGE IQWMRPSKEV GYPIINAPSK TKLEPSAFHY VFEGVKEPAV LTKNDPRLKT
NFEEAIFSKY VGNKITEVDE HMKEAVDHYA GQLMSLDINT EQMCLEDAMY GTDGLEALDL
STSAGYPYVA MGKKKRDILN KQTRDTKEMQ KLLDTYGINL PLVTYVKDEL RSKTKVEQGK
SRLIEASSLN DSVAMRMAFG NLYAAFHKNP GVITGSAVGC DPDLFWSKIP VLMEEKLFAF
DYTGYDASLS PAWFEALEMV LEKIGFGDRV DYIDYLNHSH HLYKNKTYCV KGGMPSGCSG
TSIFNSMINN LIIRTLLLKT YKGIDLDHLK MIAYGDDVIA SYPHEVDASL LAQSGKDYGL
TMTPADKSAI FETVTWENVT FLKRFFRADE KYPFLIHPVM PMKEIHESIR WTKDPRNTQD
HVRSLCLLAW HNGEEEYNKF LAKIRSVPIG RALLLPEYST LYRRWLDSF
