Reviewed,
UniProtKB/Swiss-Prot P27909 (POLG_DEN1B)
Last modified
June 16, 2009.
Version 66.
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 Short name=NS2A-alpha 9- Recommended name: Serine protease subunit NS2B Alternative name(s): Non-structural protein 2B 10- Recommended name: Serine protease subunit NS3 EC=3.4.21.91 Alternative name(s): 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: RNA-directed RNA polymerase NS5 EC=2.7.7.48 EC=2.1.1.56 Alternative name(s): Non-structural protein 5 |
| Organism | Dengue virus type 1 (strain Brazil/97-11/1997) (DENV-1) [Complete proteome] |
| Taxonomic identifier | 408685 [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] Homo sapiens (Human) [TaxID: 9606] |
Protein attributes
| Sequence length | 3392 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 assure the capping of genomes in the cytoplasm. May be involved in methylation of 5'RNA cap structure 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). S-adenosyl-L-methionine + G(5')pppR-RNA = S-adenosyl-L-homocysteine + m7G(5')pppR-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 subunit 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. 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_0000264634 | |||||||
| Propeptide | 101 – 114 | 14 | ER anchor for the protein C, removed in mature form by serine protease NS3 | PRO_0000264635 | |||||||
| Chain | 115 – 280 | 166 | prM | PRO_0000264636 | |||||||
| Chain | 115 – 205 | 91 | Peptide pr | PRO_0000264637 | |||||||
| Chain | 206 – 280 | 75 | Small envelope protein M | PRO_0000264638 | |||||||
| Chain | 281 – 775 | 495 | Envelope protein E | PRO_0000264639 | |||||||
| Chain | 776 – 1127 | 352 | Non-structural protein 1 | PRO_0000264640 | |||||||
| Chain | 1128 – 1345 | 218 | Non-structural protein 2A | PRO_0000264641 | |||||||
| Chain | 1128 – 1315 | 188 | Non-structural protein 2A-alpha | PRO_0000264642 | |||||||
| Chain | 1346 – 1475 | 130 | Serine protease subunit NS2B | PRO_0000264643 | |||||||
| Chain | 1476 – 2094 | 619 | Serine protease subunit NS3 | PRO_0000264644 | |||||||
| Chain | 2095 – 2221 | 127 | Non-structural protein 4A | PRO_0000264645 | |||||||
| Peptide | 2222 – 2244 | 23 | Peptide 2k | PRO_0000264646 | |||||||
| Chain | 2245 – 2493 | 249 | Non-structural protein 4B | PRO_0000264647 | |||||||
| Chain | 2494 – 3392 | 899 | RNA-directed RNA polymerase NS5 | PRO_0000264648 | |||||||
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 – 723 | 437 | Extracellular Potential | ||||||||
| Transmembrane | 724 – 746 | 23 | Potential | ||||||||
| Topological domain | 747 – 750 | 4 | Cytoplasmic Potential | ||||||||
| Transmembrane | 751 – 773 | 23 | 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 – 2193 | 725 | Lumenal Potential | ||||||||
| Transmembrane | 2194 – 2214 | 21 | Potential | ||||||||
| Topological domain | 2215 – 2221 | 7 | Cytoplasmic Potential | ||||||||
| Transmembrane | 2222 – 2241 | 20 | Potential | ||||||||
| Topological domain | 2242 – 2349 | 108 | Lumenal Potential | ||||||||
| Transmembrane | 2350 – 2370 | 21 | Potential | ||||||||
| Topological domain | 2371 – 2415 | 45 | Cytoplasmic Potential | ||||||||
| Transmembrane | 2416 – 2436 | 21 | Potential | ||||||||
| Topological domain | 2437 – 2461 | 25 | Lumenal Potential | ||||||||
| Transmembrane | 2462 – 2482 | 21 | Potential | ||||||||
| Topological domain | 2483 – 3392 | 910 | Cytoplasmic Potential | ||||||||
| Domain | 1656 – 1812 | 157 | Helicase ATP-binding | ||||||||
| Domain | 1822 – 1989 | 168 | Helicase C-terminal | ||||||||
| Domain | 3021 – 3170 | 150 | RdRp catalytic | ||||||||
| Nucleotide binding | 1669 – 1676 | 8 | ATP Potential | ||||||||
| Motif | 1760 – 1763 | 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 | ||||||||
| 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 | 2094 – 2095 | 2 | Cleavage; by serine protease NS3 By similarity | ||||||||
| Site | 2221 – 2222 | 2 | Cleavage; by host signal peptidase By similarity | ||||||||
| Site | 2244 – 2245 | 2 | Cleavage; by serine protease NS3 By similarity | ||||||||
| Site | 2493 – 2494 | 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 | 2303 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Glycosylation | 2307 | 1 | N-linked (GlcNAc...); by host Potential | ||||||||
| Glycosylation | 2459 | 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 | |||||||||
Natural variations | |||||||||||
| Natural variant | 394 | 1 | L → I in strain: Isolate Thailand/TH-Sman/1958. | ||||||||
| Natural variant | 402 | 1 | V → A in strain: Isolate Thailand/TH-Sman/1958. | ||||||||
| Natural variant | 441 | 1 | I → T in strain: Isolate Thailand/TH-Sman/1958. | ||||||||
| Natural variant | 475 – 476 | 2 | EM → RV in strain: Isolate 924-1. | ||||||||
| Natural variant | 483 | 1 | E → K in strain: Isolate 924-1. | ||||||||
| Natural variant | 531 | 1 | V → A in strain: Isolate 924-1 and Isolate Thailand/TH-Sman/1958. | ||||||||
| Natural variant | 577 | 1 | T → M in strain: Isolate 924-1 and Isolate Thailand/TH-Sman/1958. | ||||||||
| Natural variant | 619 | 1 | T → S in strain: Isolate 924-1. | ||||||||
| Natural variant | 649 | 1 | T → E in strain: Isolate 924-1 and Isolate Thailand/TH-Sman/1958. | ||||||||
| Natural variant | 677 | 1 | S → I in strain: Isolate Thailand/TH-Sman/1958n. | ||||||||
| Natural variant | 712 | 1 | V → M in strain: Isolate Thailand/TH-Sman/1958. | ||||||||
| Natural variant | 716 | 1 | V → I in strain: Isolate 924-1. | ||||||||
| Natural variant | 719 | 1 | V → I in strain: Isolate 924-1. | ||||||||
| Natural variant | 752 | 1 | S → N in strain: Isolate Thailand/TH-Sman/1958. | ||||||||
| Natural variant | 758 | 1 | T → M in strain: Isolate Thailand/TH-Sman/1958. | ||||||||
Sequences
| ||||||||||||||||||
References
| [1] | "Genetic relatedness among structural protein genes of dengue 1 virus strains." Chu M.C., O'Rourke E.J., Trent D.W. J. Gen. Virol. 70:1701-1712(1989) [PubMed: 2738579] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA] OF 232-786. Strain: Isolate Caribbean/924-1. |
| [2] | "Envelope protein sequences of dengue virus isolates TH-36 and TH-Sman, and identification of a type-specific genetic marker for dengue and tick-borne flaviviruses." Shiu S.Y.W., Jiang W.R., Porterfield J.S., Gould E.A. J. Gen. Virol. 73:207-212(1992) [PubMed: 1339466] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA] OF 281-778. Strain: Isolate Thailand/TH-Sman/1958. |
| [3] | "Genome analysis of dengue type-1 virus isolated between 1990 and 2001 in Brazil reveals a remarkable conservation of the structural proteins but amino acid differences in the non-structural proteins." Duarte dos Santos C.N., Rocha C.F.S., Cordeiro M., Fragoso S.P., Rey F., Deubel V., Despres P. Virus Res. 90:197-205(2002) [PubMed: 12457974] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA]. |
Cross-references
Sequence databases | |
|---|---|
| D00504 Genomic RNA. Translation: BAA00396.1. D10513 Genomic RNA. Translation: BAA01388.1. AF311956 Genomic RNA. Translation: AAN60368.1. | |
| PIR | JQ1405. |
3D structure databases | |
| HSSP | HSSP built from PDB template 1L9K based on UniProtKB Q88653. |
| SMR | P27909. Positions 21-100, 281-674, 1652-2094, 2500-2760. |
| ModBase | Search... |
Family and domain databases | |
| InterPro | IPR014001. DEAD-like_N. IPR011492. DEAD_Flavivir. IPR001650. DNA/RNA_helicase_C. IPR000069. Env_glycoprot_M_flavivir. IPR013755. Flav_glyE_cen_1. IPR013756. Flav_glyE_cen_2. IPR011999. Flav_glyE_cen_dm. 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. IPR014021. Helicase_SF1/SF2_ATP-bd. IPR001850. Peptidase_S7. IPR000208. RNA_pol_flaviviral. IPR007094. RNA_pol_PSvir. IPR002877. rRNA_MeTrfase_RrmJ/FtsJ. [Graphical view] |
| Gene3D | G3DSA:3.30.387.10. Flav_glyE_cen_1. 1 hit. G3DSA:3.30.67.10. Flav_glyE_cen_2. 1 hit. G3DSA:2.60.40.350. Flv_glyE_Ig-like. 1 hit. |
| Pfam | PF01003. Flavi_capsid. 1 hit. PF07652. Flavi_DEAD. 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. |
| ProDom | PD001496. Flavi_NS1. 1 hit. [Graphical view] [Entries sharing at least one domain] |
| 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_DEN1B | ||||||||
| Accession | Primary (citable) accession number: P27909 Secondary accession number(s): P29983, Q8B648 | ||||||||
| 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


