Reviewed,
UniProtKB/Swiss-Prot Q9WDA6 (POLG_DEN2Q)
Last modified
February 9, 2010.
Version 62.
History...
Clusters with 100%,
90%,
50% identity |
Documents (3) |
Third-party data |
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Names and origin
| Protein names | Recommended name: Genome polyprotein Cleaved into the following 14 chains: 1- Recommended name: Protein C Alternative name(s): Core protein Capsid protein 2- Recommended name: prM 3- Recommended name: Peptide pr 4- Recommended name: Small envelope protein M Alternative name(s): Matrix protein 5- Recommended name: Envelope protein E 6- Recommended name: Non-structural protein 1 Short name=NS1 7- Recommended name: Non-structural protein 2A Short name=NS2A 8- Recommended name: Non-structural protein 2A-alpha Short name=NS2A-alpha 9- Recommended name: Serine protease subunit NS2B Alternative name(s): Non-structural protein 2B Flavivirin protease NS2B regulatory subunit 10- Recommended name: Serine protease/NTPase/helicase NS3 EC=3.4.21.91 EC=3.6.1.15 EC=3.6.1.- Alternative name(s): Flavivirin protease NS3 catalytic subunit Non-structural protein 3 11- Recommended name: Non-structural protein 4A Short name=NS4A 12- Recommended name: Peptide 2k 13- Recommended name: Non-structural protein 4B Short name=NS4B 14- Recommended name: Methyltransferase/RNA-directed RNA polymerase NS5 EC=2.7.7.48 EC=2.1.1.56 EC=2.1.1.57 Alternative name(s): Non-structural protein 5 |
| Organism | Dengue virus type 2 (strain Peru/IQT2913/1996) (DENV-2) [Complete proteome] |
| Taxonomic identifier | 408694 [NCBI] |
| Taxonomic lineage | Viruses › ssRNA positive-strand viruses, no DNA stage › Flaviviridae › Flavivirus › Dengue virus group |
| Virus host | Erythrocebus patas (Red guenon) (Cercopithecus patas) [TaxID: 9538] Homo sapiens (Human) [TaxID: 9606] Diceromyia [TaxID: 53539] Aedimorphus [TaxID: 53540] Stegomyia [TaxID: 53541] |
Protein attributes
| Sequence length | 3391 AA. |
| Sequence status | Complete. |
| Sequence processing | The displayed sequence is further processed into a mature form. |
| Protein existence | Evidence at protein level. |
General annotation (Comments)
| Function | Protein C packages viral RNA to form a viral nucleocapsid, and promotes virion budding By similarity. prM acts as a chaperone for envelope protein E during intracellular virion assembly by masking and inactivating envelope protein E fusion peptide. prM is matured in the last step of virion assembly, presumably to avoid catastrophic activation of the viral fusion peptide induced by the acidic pH of the trans-Golgi network. After cleavage by host furin, the pr peptide is released in the extracellular medium and small envelope protein M and envelope protein E homodimers are dissociated By similarity. Envelope protein E binds cell surface receptor and is involved in membrane fusion between virion and target cell. Synthesized as an homodimer with prM which acts as a chaperone for envelope protein E. After cleavage of prM, envelope protein E dissociate from small envelope protein M and homodimerizes By similarity. Non-structural protein 1 is slowly secreted from mammalian cells, but not from mosquito cells. Secreted form elicits protective immune response and plays an essential role in RNA replication. Soluble and membrane-associated NS1 may activate human complement and induce host vascular leakage. This effect might explain the clinical manifestations of dengue hemorrhagic fever and dengue shock syndrome By similarity. Non-structural protein 2B is a required cofactor for the serine protease function of NS3 By similarity. Serine protease NS3 displays three enzymatic activities: serine protease, NTPase and RNA helicase. NS3 serine protease, in association with NS2B, cleaves the polyprotein at dibasic sites in the cytoplasm: C-prM, NS2A-NS2B, NS2B-NS3, NS3-NS4A, NS4A-2K and NS4B-NS5. NS3 RNA helicase binds RNA and unwinds dsRNA in the 3' to 5' direction By similarity. Non-structural protein 4A plays a role in RNA replication. Enhances inhibition of cell antiviral response by non-structural protein 4B By similarity. Non-structural protein 4B prevent the establishment of cellular antiviral state by blocking the interferon-alpha/beta (IFN-alpha/beta) and IFN-gamma signaling pathways By similarity. RNA-directed RNA polymerase NS5 replicates the viral (+) and (-) genome, and performs the capping of genomes in the cytoplasm. NS5 methylates viral RNA cap at guanine N-7 and ribose 2'-O positions By similarity. |
| Catalytic activity | Selective hydrolysis of -Xaa-Xaa-|-Yaa- bonds in which each of the Xaa can be either Arg or Lys and Yaa can be either Ser or Ala. Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1). NTP + H2O = NDP + phosphate. S-adenosyl-L-methionine + G(5')pppR-RNA = S-adenosyl-L-homocysteine + m7G(5')pppR-RNA. S-adenosyl-L-methionine + m7G(5')pppR-RNA = S-adenosyl-L-homocysteine + m7G(5')pppRm-RNA. |
| Subunit structure | prM and envelope protein E form heterodimers in the endoplasmic reticulum and Golgi. Envelope protein E forms homodimers. NS1 forms homodimers as well as homohexamers when secreted. NS1 may interact with NS4A. NS3 and NS2B form an heterodimer. NS3 interacts with unphosphorylated NS5 By similarity. |
| Subcellular location | Protein C: Virion By similarity. Peptide pr: Secreted By similarity. Small envelope protein M: Virion membrane; Single-pass type I membrane protein By similarity. Envelope protein E: Virion membrane; Single-pass type I membrane protein By similarity. Non-structural protein 1: Secreted. Host endoplasmic reticulum membrane; Peripheral membrane protein; Lumenal side By similarity. Non-structural protein 2A-alpha: Host endoplasmic reticulum membrane By similarity. Non-structural protein 2A: Host endoplasmic reticulum membrane By similarity. Serine protease subunit NS2B: Host endoplasmic reticulum membrane; Peripheral membrane protein; Cytoplasmic side By similarity. Serine protease/NTPase/helicase NS3: Host endoplasmic reticulum membrane; Peripheral membrane protein; Cytoplasmic side By similarity. Non-structural protein 4A: Host endoplasmic reticulum membrane; Peripheral membrane protein; Cytoplasmic side By similarity. Non-structural protein 4B: Host endoplasmic reticulum membrane; Multi-pass membrane protein By similarity. Note: The C-terminal transmembrane domain of non-structural protein 4B is presumably reoriented after cleavage on the lumenal side By similarity. Methyltransferase/RNA-directed RNA polymerase NS5: Host endoplasmic reticulum membrane; Peripheral membrane protein; Cytoplasmic side. Host nucleus By similarity. |
| Domain | Transmembrane domains of the small envelope protein M and envelope protein E contains an endoplasmic reticulum retention signals By similarity. |
| Post-translational modification | Specific enzymatic cleavages in vivo yield mature proteins. The nascent protein C contains a C-terminal hydrophobic domain that act as a signal sequence for translocation of prM into the lumen of the ER. Mature protein C is cleaved at a site upstream of this hydrophobic domain by NS3. prM is cleaved in post-Golgi vesicles by a host furin, releasing the mature small envelope protein M, and peptide pr. Non-structural protein 2A-alpha, a C-terminally truncated form of non-structural protein 2A, results from partial cleavage by NS3 By similarity. RNA-directed RNA polymerase NS5 is phosphorylated on serines residues. This phosphorylation may trigger NS5 nuclear localization By similarity. Envelope protein E and non-structural protein 1 are N-glycosylated By similarity. |
| Miscellaneous | The virion is assembled in the endoplasmic reticulum lumen, transported by vesicles to the Golgi, then transported again to the cell membrane where it is released outside the cell. |
| Sequence similarities | Contains 1 helicase ATP-binding domain. Contains 1 helicase C-terminal domain. Contains 1 peptidase S7 domain. Contains 1 RdRp catalytic domain. |
Ontologies
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||||
Molecule processing | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 100 | 100 | Protein C | PRO_0000268028 | |||||||
| Propeptide | 101 – 114 | 14 | ER anchor for the protein C, removed in mature form by serine protease NS3 | PRO_0000268029 | |||||||
| Chain | 115 – 280 | 166 | prM | PRO_0000268030 | |||||||
| Chain | 115 – 205 | 91 | Peptide pr | PRO_0000268031 | |||||||
| Chain | 206 – 280 | 75 | Small envelope protein M | PRO_0000268032 | |||||||
| Chain | 281 – 775 | 495 | Envelope protein E | PRO_0000268033 | |||||||
| Chain | 776 – 1127 | 352 | Non-structural protein 1 | PRO_0000268034 | |||||||
| Chain | 1128 – 1345 | 218 | Non-structural protein 2A | PRO_0000268036 | |||||||
| Chain | 1128 – 1315 | 188 | Non-structural protein 2A-alpha | PRO_0000268035 | |||||||
| Chain | 1346 – 1475 | 130 | Serine protease subunit NS2B | PRO_0000268037 | |||||||
| Chain | 1476 – 2093 | 618 | Serine protease/NTPase/helicase NS3 | PRO_0000268038 | |||||||
| Chain | 2094 – 2220 | 127 | Non-structural protein 4A | PRO_0000268039 | |||||||
| Peptide | 2221 – 2243 | 23 | Peptide 2k | PRO_0000268040 | |||||||
| Chain | 2244 – 2491 | 248 | Non-structural protein 4B | PRO_0000268041 | |||||||
| Chain | 2492 – 3391 | 900 | Methyltransferase/RNA-directed RNA polymerase NS5 | PRO_0000268042 | |||||||
Regions | |||||||||||
| Topological domain | 1 – 101 | 101 | Cytoplasmic Potential | ||||||||
| Transmembrane | 102 – 122 | 21 | Potential | ||||||||
| Topological domain | 123 – 238 | 116 | Extracellular Potential | ||||||||
| Transmembrane | 239 – 259 | 21 | Potential | ||||||||
| Topological domain | 260 – 265 | 6 | Cytoplasmic Potential | ||||||||
| Transmembrane | 266 – 286 | 21 | Potential | ||||||||
| Topological domain | 287 – 725 | 439 | Extracellular Potential | ||||||||
| Transmembrane | 726 – 746 | 21 | Potential | ||||||||
| Topological domain | 747 – 752 | 6 | Cytoplasmic Potential | ||||||||
| Transmembrane | 753 – 773 | 21 | Potential | ||||||||
| Topological domain | 774 – 1156 | 383 | Extracellular Potential | ||||||||
| Transmembrane | 1157 – 1177 | 21 | Potential | ||||||||
| Topological domain | 1178 – 1447 | 270 | Cytoplasmic Potential | ||||||||
| Transmembrane | 1448 – 1468 | 21 | Potential | ||||||||
| Topological domain | 1469 – 2192 | 724 | Lumenal Potential | ||||||||
| Transmembrane | 2193 – 2213 | 21 | Potential | ||||||||
| Topological domain | 2214 – 2220 | 7 | Cytoplasmic Potential | ||||||||
| Transmembrane | 2221 – 2240 | 20 | Potential | ||||||||
| Topological domain | 2241 – 2347 | 107 | Lumenal Potential | ||||||||
| Transmembrane | 2348 – 2368 | 21 | Potential | ||||||||
| Topological domain | 2369 – 2413 | 45 | Cytoplasmic Potential | ||||||||
| Transmembrane | 2414 – 2434 | 21 | Potential | ||||||||
| Topological domain | 2435 – 2459 | 25 | Lumenal Potential | ||||||||
| Transmembrane | 2460 – 2480 | 21 | Potential | ||||||||
| Topological domain | 2481 – 3391 | 911 | Cytoplasmic Potential | ||||||||
| Domain | 1655 – 1811 | 157 | Helicase ATP-binding | ||||||||
| Domain | 1821 – 1988 | 168 | Helicase C-terminal | ||||||||
| Domain | 3020 – 3169 | 150 | RdRp catalytic | ||||||||
| Nucleotide binding | 1668 – 1675 | 8 | ATP Potential | ||||||||
| Motif | 1759 – 1762 | 4 | DEAH box By similarity | ||||||||
Sites | |||||||||||
| Active site | 1526 | 1 | Charge relay system; for serine protease NS3 activity By similarity | ||||||||
| Active site | 1550 | 1 | Charge relay system; for serine protease NS3 activity By similarity | ||||||||
| Active site | 1610 | 1 | Charge relay system; for serine protease NS3 activity By similarity | ||||||||
| Active site | 2552 | 1 | For 2'-O-methyltransferase activity By similarity | ||||||||
| Active site | 2637 | 1 | For 2'-O-methyltransferase and N-7 methyltransferase activity By similarity | ||||||||
| Active site | 2672 | 1 | For 2'-O-methyltransferase activity By similarity | ||||||||
| Active site | 2708 | 1 | For 2'-O-methyltransferase activity By similarity | ||||||||
| Site | 100 – 101 | 2 | Cleavage; by serine protease NS3 By similarity | ||||||||
| Site | 114 – 115 | 2 | Cleavage; by host signal peptidase By similarity | ||||||||
| Site | 205 – 206 | 2 | Cleavage; by host furin By similarity | ||||||||
| Site | 280 – 281 | 2 | Cleavage; by host signal peptidase By similarity | ||||||||
| Site | 775 – 776 | 2 | Cleavage; by host signal peptidase By similarity | ||||||||
| Site | 1127 – 1128 | 2 | Cleavage; by host By similarity | ||||||||
| Site | 1315 – 1316 | 2 | Cleavage; by serine protease NS3 By similarity | ||||||||
| Site | 1345 – 1346 | 2 | Cleavage; by serine protease NS3 By similarity | ||||||||
| Site | 1475 – 1476 | 2 | Cleavage; by serine protease NS3 By similarity | ||||||||
| Site | 2093 – 2094 | 2 | Cleavage; by serine protease NS3 By similarity | ||||||||
| Site | 2220 – 2221 | 2 | Cleavage; by host signal peptidase By similarity | ||||||||
| Site | 2243 – 2244 | 2 | Cleavage; by serine protease NS3 By similarity | ||||||||
| Site | 2491 – 2492 | 2 | Cleavage; by serine protease NS3 By similarity | ||||||||
Amino acid modifications | |||||||||||
| Glycosylation | 183 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Glycosylation | 347 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Glycosylation | 433 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Glycosylation | 982 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Glycosylation | 2301 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Glycosylation | 2305 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Glycosylation | 2457 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Disulfide bond | 283 ↔ 310 | By similarity | |||||||||
| Disulfide bond | 340 ↔ 401 | By similarity | |||||||||
| Disulfide bond | 354 ↔ 385 | By similarity | |||||||||
| Disulfide bond | 372 ↔ 396 | By similarity | |||||||||
| Disulfide bond | 465 ↔ 565 | By similarity | |||||||||
| Disulfide bond | 582 ↔ 613 | By similarity | |||||||||
Sequences
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References
| [1] | "Dengue virus structural differences that correlate with pathogenesis." Leitmeyer K.C., Vaughn D.W., Watts D.M., Salas R., Villalobos de Chacon I., Ramos C., Rico-Hesse R. J. Virol. 73:4738-4747(1999) [PubMed: 10233934] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA]. |
Cross-references
Sequence databases | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EMBL GenBank DDBJ | AF100468 Genomic RNA. Translation: AAD32963.1. | ||||||||||||
| PIR | B25817. JS0219. | ||||||||||||
3D structure databases | |||||||||||||
| PDBe RCSB PDB PDBj |
| ||||||||||||
| ModBase | Search... | ||||||||||||
Protein family/group databases | |||||||||||||
| MEROPS | S07.001. | ||||||||||||
Family and domain databases | |||||||||||||
| InterPro | IPR014001. DEAD-like_N. IPR001650. DNA/RNA_helicase_C. IPR000069. Env_glycoprot_M_flavivir. IPR013754. Flav_glyE_dim. IPR001122. Flavi_capsidC. IPR001157. Flavi_NS1. IPR000752. Flavi_NS2A. IPR000487. Flavi_NS2B. IPR000404. Flavi_NS4A. IPR001528. Flavi_NS4B. IPR002535. Flavi_propep. IPR000336. Flv_glyE_Ig-like. IPR014412. Gen_Poly_FLV. IPR011999. GlycoprotE_cen/dimer_Flavivir. IPR011998. GlycoprotE_cen/dimer_vir. IPR014021. Helicase_SF1/SF2_ATP-bd. IPR014756. Ig_E-set. IPR001850. Peptidase_S7. IPR000208. RNA-dir_pol_flavivirus. IPR007094. RNA-dir_pol_PSvirus. IPR002877. rRNA_MeTrfase_RrmJ/FtsJ. IPR009003. Ser/Cys_Pept_Trypsin-like. [Graphical view] | ||||||||||||
| Gene3D | G3DSA:2.60.98.10. Flav_glyE_dim. 1 hit. G3DSA:2.60.40.350. Flv_glyE_Ig-like. 1 hit. | ||||||||||||
| Pfam | PF01003. Flavi_capsid. 1 hit. PF02832. Flavi_glycop_C. 1 hit. PF00869. Flavi_glycoprot. 1 hit. PF01004. Flavi_M. 1 hit. PF00948. Flavi_NS1. 1 hit. PF01005. Flavi_NS2A. 1 hit. PF01002. Flavi_NS2B. 1 hit. PF01350. Flavi_NS4A. 1 hit. PF01349. Flavi_NS4B. 1 hit. PF00972. Flavi_NS5. 1 hit. PF01570. Flavi_propep. 1 hit. PF01728. FtsJ. 1 hit. PF00271. Helicase_C. 1 hit. PF00949. Peptidase_S7. 1 hit. [Graphical view] | ||||||||||||
| PIRSF | PIRSF003817. Gen_Poly_FLV. 1 hit. | ||||||||||||
| SMART | SM00487. DEXDc. 1 hit. SM00490. HELICc. 1 hit. [Graphical view] | ||||||||||||
| PROSITE | PS51192. HELICASE_ATP_BIND_1. 1 hit. PS51194. HELICASE_CTER. 1 hit. PS50507. RDRP_SSRNA_POS. 1 hit. [Graphical view] | ||||||||||||
| ProtoNet | Search... | ||||||||||||
Entry information
| Entry name | POLG_DEN2Q | ||||||||
| Accession | Primary (citable) accession number: Q9WDA6 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation project | Virus (Virus annotation project) | ||||||||
Relevant documents
| PDB cross-references Index of Protein Data Bank (PDB) cross-references |
| Peptidase families Classification of peptidase families and list of entries |
| SIMILARITY comments Index of protein domains and families |

Clusters with


