Reviewed,
UniProtKB/Swiss-Prot Q5UCB8 (POLG_DEN4S)
Last modified
February 9, 2010.
Version 47.
History...
Clusters with 100%,
90%,
50% identity |
Documents (2) |
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 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 4 (strain Singapore/8976/1995) (DENV-4) [Complete proteome] |
| Taxonomic identifier | 408687 [NCBI] |
| Taxonomic lineage | Viruses › ssRNA positive-strand viruses, no DNA stage › Flaviviridae › Flavivirus › Dengue virus group |
| Virus host | Aedes aegypti (Yellowfever mosquito) (Culex aegypti) [TaxID: 7159] Aedes albopictus (Asian tiger mosquito) (Culex albopictus) [TaxID: 7160] Homo sapiens (Human) [TaxID: 9606] Aedes polynesiensis (Polynesian tiger mosquito) [TaxID: 188700] |
Protein attributes
| Sequence length | 3387 AA. |
| Sequence status | Complete. |
| Sequence processing | The displayed sequence is further processed into a mature form. |
| Protein existence | Inferred from homology. |
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 – 99 | 99 | Protein C | PRO_0000268117 | |||||||
| Propeptide | 100 – 113 | 14 | ER anchor for the protein C, removed in mature form by serine protease NS3 By similarity | PRO_0000268118 | |||||||
| Chain | 114 – 279 | 166 | prM | PRO_0000268119 | |||||||
| Chain | 114 – 204 | 91 | Peptide pr | PRO_0000268120 | |||||||
| Chain | 205 – 279 | 75 | Small envelope protein M | PRO_0000268121 | |||||||
| Chain | 280 – 774 | 495 | Envelope protein E | PRO_0000268122 | |||||||
| Chain | 775 – 1126 | 352 | Non-structural protein 1 | PRO_0000268123 | |||||||
| Chain | 1127 – 1344 | 218 | Non-structural protein 2A | PRO_0000268124 | |||||||
| Chain | 1127 – ? | Non-structural protein 2A-alpha | PRO_0000304549 | ||||||||
| Chain | 1345 – 1474 | 130 | Serine protease subunit NS2B | PRO_0000268125 | |||||||
| Chain | 1475 – 2092 | 618 | Serine protease/NTPase/helicase NS3 | PRO_0000268126 | |||||||
| Chain | 2093 – 2219 | 127 | Non-structural protein 4A | PRO_0000268127 | |||||||
| Peptide | 2220 – 2242 | 23 | Peptide 2k | PRO_0000268128 | |||||||
| Chain | 2243 – 2487 | 245 | Non-structural protein 4B | PRO_0000268129 | |||||||
| Chain | 2488 – 3387 | 900 | Methyltransferase/RNA-directed RNA polymerase NS5 | PRO_0000268130 | |||||||
Regions | |||||||||||
| Topological domain | 1 – 100 | 100 | Cytoplasmic Potential | ||||||||
| Transmembrane | 101 – 121 | 21 | Potential | ||||||||
| Topological domain | 122 – 237 | 116 | Extracellular Potential | ||||||||
| Transmembrane | 238 – 258 | 21 | Potential | ||||||||
| Topological domain | 259 – 264 | 6 | Cytoplasmic Potential | ||||||||
| Transmembrane | 265 – 285 | 21 | Potential | ||||||||
| Topological domain | 286 – 724 | 439 | Extracellular Potential | ||||||||
| Transmembrane | 725 – 745 | 21 | Potential | ||||||||
| Topological domain | 746 – 751 | 6 | Cytoplasmic Potential | ||||||||
| Transmembrane | 752 – 772 | 21 | Potential | ||||||||
| Topological domain | 773 – 1155 | 383 | Extracellular Potential | ||||||||
| Transmembrane | 1156 – 1176 | 21 | Potential | ||||||||
| Topological domain | 1177 – 1446 | 270 | Cytoplasmic Potential | ||||||||
| Transmembrane | 1447 – 1467 | 21 | Potential | ||||||||
| Topological domain | 1468 – 2191 | 724 | Lumenal Potential | ||||||||
| Transmembrane | 2192 – 2212 | 21 | Potential | ||||||||
| Topological domain | 2213 – 2219 | 7 | Cytoplasmic Potential | ||||||||
| Transmembrane | 2220 – 2239 | 20 | Potential | ||||||||
| Topological domain | 2240 – 2343 | 104 | Lumenal Potential | ||||||||
| Transmembrane | 2344 – 2364 | 21 | Potential | ||||||||
| Topological domain | 2365 – 2409 | 45 | Cytoplasmic Potential | ||||||||
| Transmembrane | 2410 – 2430 | 21 | Potential | ||||||||
| Topological domain | 2431 – 2455 | 25 | Lumenal Potential | ||||||||
| Transmembrane | 2456 – 2476 | 21 | Potential | ||||||||
| Topological domain | 2477 – 3387 | 911 | Cytoplasmic Potential | ||||||||
| Domain | 1654 – 1810 | 157 | Helicase ATP-binding | ||||||||
| Domain | 1820 – 1987 | 168 | Helicase C-terminal | ||||||||
| Domain | 3016 – 3166 | 151 | RdRp catalytic | ||||||||
| Nucleotide binding | 1667 – 1674 | 8 | ATP Potential | ||||||||
| Motif | 1758 – 1761 | 4 | DEAH box By similarity | ||||||||
Sites | |||||||||||
| Active site | 1525 | 1 | Charge relay system; for serine protease NS3 activity By similarity | ||||||||
| Active site | 1549 | 1 | Charge relay system; for serine protease NS3 activity By similarity | ||||||||
| Active site | 1609 | 1 | Charge relay system; for serine protease NS3 activity By similarity | ||||||||
| Active site | 2548 | 1 | For 2'-O-methyltransferase activity By similarity | ||||||||
| Active site | 2633 | 1 | For 2'-O-methyltransferase and N-7 methyltransferase activity By similarity | ||||||||
| Active site | 2668 | 1 | For 2'-O-methyltransferase activity By similarity | ||||||||
| Active site | 2704 | 1 | For 2'-O-methyltransferase activity By similarity | ||||||||
| Site | 99 – 100 | 2 | Cleavage; by serine protease NS3 By similarity | ||||||||
| Site | 113 – 114 | 2 | Cleavage; by host signal peptidase By similarity | ||||||||
| Site | 204 – 205 | 2 | Cleavage; by host furin By similarity | ||||||||
| Site | 279 – 280 | 2 | Cleavage; by host signal peptidase By similarity | ||||||||
| Site | 774 – 775 | 2 | Cleavage; by host signal peptidase By similarity | ||||||||
| Site | 1126 – 1127 | 2 | Cleavage; by host By similarity | ||||||||
| Site | 1344 – 1345 | 2 | Cleavage; by serine protease NS3 By similarity | ||||||||
| Site | 1474 – 1475 | 2 | Cleavage; by serine protease NS3 By similarity | ||||||||
| Site | 2092 – 2093 | 2 | Cleavage; by serine protease NS3 By similarity | ||||||||
| Site | 2219 – 2220 | 2 | Cleavage; by host signal peptidase By similarity | ||||||||
| Site | 2242 – 2243 | 2 | Cleavage; by serine protease NS3 By similarity | ||||||||
| Site | 2487 – 2488 | 2 | Cleavage; by serine protease NS3 By similarity | ||||||||
Amino acid modifications | |||||||||||
| Glycosylation | 182 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Glycosylation | 346 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Glycosylation | 432 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Glycosylation | 981 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Glycosylation | 2297 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Glycosylation | 2301 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Glycosylation | 2453 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Disulfide bond | 282 ↔ 309 | By similarity | |||||||||
| Disulfide bond | 339 ↔ 400 | By similarity | |||||||||
| Disulfide bond | 353 ↔ 384 | By similarity | |||||||||
| Disulfide bond | 371 ↔ 395 | By similarity | |||||||||
| Disulfide bond | 464 ↔ 564 | By similarity | |||||||||
| Disulfide bond | 581 ↔ 612 | By similarity | |||||||||
Sequences
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References
| [1] | "Dengue virus type 4 strain Singapore 8976/95, complete genome." Yoong L.F., Tan T., Anwar A., August T.J., Too H.P. Submitted (SEP-2004) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA]. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AY762085 Genomic RNA. Translation: AAV31422.1. |
3D structure databases | |
| HSSP | HSSP built from PDB template 2BHR based on UniProtKB Q91H74. |
| ModBase | Search... |
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. PF00949. Peptidase_S7. 1 hit. [Graphical view] |
| PIRSF | PIRSF003817. Gen_Poly_FLV. 1 hit. |
| SMART | SM00487. DEXDc. 1 hit. [Graphical view] |
| PROSITE | PS51192. HELICASE_ATP_BIND_1. 1 hit. PS51194. HELICASE_CTER. False negative. PS50507. RDRP_SSRNA_POS. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Entry information
| Entry name | POLG_DEN4S | ||||||||
| Accession | Primary (citable) accession number: Q5UCB8 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation project | Virus (Virus annotation project) | ||||||||
Relevant documents
| Peptidase families Classification of peptidase families and list of entries |
| SIMILARITY comments Index of protein domains and families |

Clusters with


