| IED ID | IndEnz0002001479 |
| Enzyme Type ID | protease001479 |
| Protein Name |
Structural polyprotein Cleaved into: Capsid protein C Core protein ; Protein prM; Peptide pr; Small envelope protein M Matrix protein ; Envelope protein E; Non-structural protein 1' NS1' |
| Gene Name | |
| Organism | Japanese encephalitis virus (strain SA-14) (JEV) |
| Taxonomic Lineage | Viruses Riboviria Orthornavirae Kitrinoviricota Flasuviricetes Amarillovirales Flaviviridae Flavivirus (arboviruses group B) Japanese encephalitis virus Japanese encephalitis virus (strain SA-14) (JEV) |
| Enzyme Sequence | MTKKPGGPGKNRAINMLKRGLPRVFPLVGVKRVVMSLLDGRGPVRFVLALITFFKFTALAPTKALLGRWKAVEKSVAMKHLTSFKRELGTLIDAVNKRGRKQNKRGGNEGSIMWLASLAVVIACAGAMKLSNFQGKLLMTINNTDIADVIVIPTSKGENRCWVRAIDVGYMCEDTITYECPKLTMGNDPEDVDCWCDNQEVYVQYGRCTRTRHSKRSRRSVSVQTHGESSLVNKKEAWLDSTKATRYLMKTENWIIRNPGYAFLAAVLGWMLGSNNGQRVVFTILLLLVAPAYSFNCLGMGNRDFIEGASGATWVDLVLEGDSCLTIMANDKPTLDVRMINIEASQLAEVRSYCYHASVTDISTVARCPTTGEAHNEKRADSSYVCKQGFTDRGWGNGCGLFGKGSIDTCAKFSCTSKAIGRTIQPENIKYEVGIFVHGTTTSENHGNYSAQVGASQAAKFTVTPNAPSITLKLGDYGEVTLDCEPRSGLNTEAFYVMTVGSKSFLVHREWFHDLALPWTSPSSTAWRNRELLMEFEGAHATKQSVVALGSQEGGLHQALAGAIVVEYSSSVKLTSGHLKCRLKMDKLALKGTTYGMCTEKFSFAKNPVDTGHGTVVIELSYSGSDGPCKIPIVSVASLNDMTPVGRLVTVNPFVATSSANSKVLVEMEPPFGDSYIVVGRGDKQINHHWHKAGSTLGKAFSTTLKGAQRLAALGDTAWDFGSIGGVFNSIGRAVHQVFGGAFRTLFGGMSWITQGLMGALLLWMGVNARDRSIALAFLATGGVLVFLATNVHADTGCAIDITRKEMRCGSGIFVHNDVEAWVDRYKYLPETPRSLAKIVHKAHKEGVCGVRSVTRLEHQMWEAVRDELNVLLKENAVDLSVVVNKPVGRYRSAPKRLSMTQEKFEMGWKAWGKSILFAPELANSTFVVDGPETKECPDEHRAWNSMQIEDFGFGITSTRVWLKIREESTDECDGAIIGTAVKGHVAVHSDLSYWIESRYNDTWKLERAVFGEVKSCTWPETHTLWGDDVEESELIIPHTIAGPKSKHNRREGYKTQNQGPWDENGIVLDFDYCPGTKVTITEDCSKRGPSVRTTTDSGKLITDWCCRSCSLPPLRFRTENGCWYGMEIRPVMHDETTLVRSQVDAFKGEMVDPFSAGPSGDVSGHPGSPSQEVDGQIDHSCGFGGPTCADAWGYHLH |
| Enzyme Length | 1198 |
| Uniprot Accession Number | P0DOH7 |
| Absorption | |
| Active Site | |
| Activity Regulation | |
| Binding Site | |
| Calcium Binding | |
| catalytic Activity | |
| DNA Binding | |
| EC Number | |
| Enzyme Function | FUNCTION: [Capsid protein C]: Plays a role in virus budding by binding to the cell membrane and gathering the viral RNA into a nucleocapsid that forms the core of a mature virus particle. During virus entry, may induce genome penetration into the host cytoplasm after hemifusion induced by the surface proteins. Can migrate to the cell nucleus where it modulates host functions. Overcomes the anti-viral effects of host EXOC1 by sequestering and degrading the latter through the proteasome degradation pathway. {ECO:0000250|UniProtKB:P17763}.; FUNCTION: [Capsid protein C]: Inhibits RNA silencing by interfering with host Dicer. {ECO:0000250|UniProtKB:P03314}.; FUNCTION: [Peptide pr]: Prevents premature fusion activity of envelope proteins in trans-Golgi by binding to envelope protein E at pH6.0. After virion release in extracellular space, gets dissociated from E dimers. {ECO:0000250|UniProtKB:P17763}.; FUNCTION: [Protein prM]: Acts as a chaperone for envelope protein E during intracellular virion assembly by masking and inactivating envelope protein E fusion peptide. prM is the only viral peptide matured by host furin in the trans-Golgi network probably to avoid catastrophic activation of the viral fusion activity in acidic Golgi compartment prior to virion release. prM-E cleavage is inefficient, and many virions are only partially matured. These uncleaved prM would play a role in immune evasion. {ECO:0000250|UniProtKB:P17763}.; FUNCTION: [Small envelope protein M]: May play a role in virus budding. Exerts cytotoxic effects by activating a mitochondrial apoptotic pathway through M ectodomain. May display a viroporin activity. {ECO:0000250|UniProtKB:P17763}.; FUNCTION: [Envelope protein E]: Binds to host cell surface receptor and mediates fusion between viral and cellular membranes. Envelope protein is synthesized in the endoplasmic reticulum in the form of heterodimer with protein prM. They play a role in virion budding in the ER, and the newly formed immature particle is covered with 60 spikes composed of heterodimer between precursor prM and envelope protein E. The virion is transported to the Golgi apparatus where the low pH causes dissociation of PrM-E heterodimers and formation of E homodimers. prM-E cleavage is inefficient, and many virions are only partially matured. These uncleaved prM would play a role in immune evasion. {ECO:0000250|UniProtKB:P17763}.; FUNCTION: [Non-structural protein 1']: May play a role in neuroinvasiveness. {ECO:0000250|UniProtKB:P0DOH8}. |
| Temperature Dependency | |
| PH Dependency | |
| Pathway | |
| nucleotide Binding | |
| Features | Chain (7); Disulfide bond (14); Glycosylation (4); Propeptide (1); Region (4); Site (5); Transmembrane (5) |
| Keywords | Capsid protein;Clathrin-mediated endocytosis of virus by host;Cleavage on pair of basic residues;Disulfide bond;Fusion of virus membrane with host endosomal membrane;Fusion of virus membrane with host membrane;Glycoprotein;Host endoplasmic reticulum;Host membrane;Host-virus interaction;Membrane;Ribosomal frameshifting;Secreted;Transmembrane;Transmembrane helix;Viral attachment to host cell;Viral envelope protein;Viral penetration into host cytoplasm;Virion;Virus endocytosis by host;Virus entry into host cell |
| Interact With | |
| Induction | |
| Subcellular Location | SUBCELLULAR LOCATION: [Peptide pr]: Secreted {ECO:0000250|UniProtKB:P17763}.; SUBCELLULAR LOCATION: [Small envelope protein M]: Virion membrane {ECO:0000250|UniProtKB:P03314}; Multi-pass membrane protein {ECO:0000250|UniProtKB:P03314}. Host endoplasmic reticulum membrane {ECO:0000250|UniProtKB:P03314}; Multi-pass membrane protein {ECO:0000255}. Note=ER membrane retention is mediated by the transmembrane domains. {ECO:0000250|UniProtKB:P03314}.; SUBCELLULAR LOCATION: [Envelope protein E]: Virion membrane {ECO:0000250|UniProtKB:P0DOH8}; Multi-pass membrane protein {ECO:0000250|UniProtKB:P03314}. Host endoplasmic reticulum membrane {ECO:0000250|UniProtKB:P03314}; Multi-pass membrane protein {ECO:0000255}. Note=ER membrane retention is mediated by the transmembrane domains. {ECO:0000250|UniProtKB:P03314}.; SUBCELLULAR LOCATION: [Non-structural protein 1']: Secreted {ECO:0000250|UniProtKB:P17763}. Host endoplasmic reticulum membrane {ECO:0000250|UniProtKB:P0DOH8}; Peripheral membrane protein {ECO:0000250|UniProtKB:P0DOH8}; Lumenal side {ECO:0000250|UniProtKB:P17763}. Note=Located in RE-derived vesicles hosting the replication complex. {ECO:0000250|UniProtKB:Q9Q6P4}. |
| Modified Residue | |
| Post Translational Modification | PTM: Genome polyprotein: Specific enzymatic cleavages in vivo yield mature proteins. Cleavages in the lumen of endoplasmic reticulum are performed by host signal peptidase, whereas cleavages in the cytoplasmic side are performed by serine protease NS3. Signal cleavage at the 2K-4B site requires a prior NS3 protease-mediated cleavage at the 4A-2K site. {ECO:0000250|UniProtKB:P17763}.; PTM: [Protein prM]: Cleaved in post-Golgi vesicles by a host furin, releasing the mature small envelope protein M, and peptide pr. This cleavage is incomplete as up to 30% of viral particles still carry uncleaved prM. {ECO:0000250|UniProtKB:P17763}.; PTM: [Envelope protein E]: N-glycosylated. {ECO:0000250|UniProtKB:P17763}. |
| Signal Peptide | |
| Structure 3D | |
| Cross Reference PDB | - |
| Mapped Pubmed ID | - |
| Motif | |
| Gene Encoded By | |
| Mass | 131,562 |
| Kinetics | |
| Metal Binding | |
| Rhea ID | |
| Cross Reference Brenda |