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Reviewed, UniProtKB/Swiss-Prot Q02597 (POLG_TUMVQ)

Last modified January 19, 2010. Version 91. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data | Customize display text xml rdf/xml gff fasta
Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Alternative products · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents

Names and origin

Protein namesRecommended name:
    Genome polyprotein
Cleaved into the following 10 chains:
    1- Recommended name:
            P1 proteinase
        Alternative name(s):
            N-terminal protein
    2- Recommended name:
            Helper component proteinase
                Short name=HC-pro
              EC=3.4.22.45
    3- Recommended name:
            Protein P3
    4- Recommended name:
            6 kDa protein 1
                Short name=6K1
    5- Recommended name:
            Cytoplasmic inclusion protein
                Short name=CI
              EC=3.6.1.-
    6- Recommended name:
            6 kDa protein 2
                Short name=6K2
    7- Recommended name:
            Viral genome-linked protein
        Alternative name(s):
            VPg
    8- Recommended name:
            Nuclear inclusion protein A
                Short name=NI-a
                Short name=NIa
              EC=3.4.22.44
        Alternative name(s):
            NIa-pro
            49 kDa proteinase
              Short name=49 kDa-Pro
    9- Recommended name:
            Nuclear inclusion protein B
                Short name=NI-b
                Short name=NIb
              EC=2.7.7.48
        Alternative name(s):
            RNA-directed RNA polymerase
    10- Recommended name:
            Coat protein
                Short name=CP
OrganismTurnip mosaic virus (strain Quebec) (TuMV) [Complete proteome]
Taxonomic identifier36396 [NCBI]
Taxonomic lineageVirusesssRNA positive-strand viruses, no DNA stagePotyviridaePotyvirus
Virus hostBrassica [TaxID: 3705]
Capsella bursa-pastoris (Shepherd's purse) [TaxID: 3719]
Stellaria media (Common chickweed) [TaxID: 13274]
Calanthe [TaxID: 38206]
Trifolium hybridum (Alsike clover) [TaxID: 74517]
Alliaria [TaxID: 126269]
Hesperis matronalis [TaxID: 264418]

Protein attributes

Sequence length3163 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence at protein level.

General annotation (Comments)

Function

Coat protein is involved in aphid transmission, cell-to-cell and systemis movement, encapsidation of the viral RNA and in the regulation of viral RNA amplification.

Nuclear inclusion protein B is a RNA-dependent RNA polymerase that plays an essential role in the virus replication.

Helper component proteinase is required for aphid transmission and also has proteolytic activity. Interacts with virions and aphid stylets. Acts as a suppressor of RNA-mediated gene silencing, also known as post-transcriptional gene silencing (PTGS), a mechanism of plant viral defense that limits the accumulation of viral RNAs. May have RNA-binding activity By similarity.

Cytoplasmic inclusion protein has helicase activity. It may be involved in replication By similarity.

Both 6K peptides are indispensable for virus replication By similarity.

Nuclear inclusion protein A has RNA-binding and proteolytic activities.

Catalytic activity

Hydrolyzes glutaminyl bonds, and activity is further restricted by preferences for the amino acids in P6 - P1' that vary with the species of potyvirus, e.g. Glu-Xaa-Xaa-Tyr-Xaa-Gln-|-(Ser or Gly) for the enzyme from tobacco etch virus. The natural substrate is the viral polyprotein, but other proteins and oligopeptides containing the appropriate consensus sequence are also cleaved.

Nucleoside triphosphate + RNA(n) = diphosphate + RNA(n+1).

Hydrolyzes a Gly-|-Gly bond at its own C-terminus, commonly in the sequence -Tyr-Xaa-Val-Gly-|-Gly, in the processing of the potyviral polyprotein.

Subcellular location

Coat protein: Virion Potential.

Domain

The N-terminus of helper component proteinase is involved in interaction with stylets. The central part is involved in interaction with virions and the C-terminus is involved in cell-to cell movement of the virus.

Post-translational modification

VPg is uridylylated by the polymerase and is covalently attached to the 5'-end of the genomic RNA. This uridylylated form acts as a nucleotide-peptide primer for the polymerase By similarity.

The viral RNA of potyviruses is expressed as a single polyprotein which undergoes post-translational proteolytic processing by the main proteinase NIa-pro resulting in the production of at least ten individual proteins. The P1 proteinase and the HC-pro cleave only their respective C-termini autocatalytically. 6K1 is essential for proper proteolytic separation of P3 from CI By similarity.

Sequence similarities

Belongs to the potyviruses polyprotein family.

Contains 1 helicase ATP-binding domain.

Contains 1 helicase C-terminal domain.

Contains 1 peptidase C4 domain.

Contains 1 peptidase C6 domain.

Contains 1 peptidase S30 domain.

Contains 1 RdRp catalytic domain.

Alternative products

This entry describes 2 isoforms produced by ribosomal frameshifting. [Align] [Select]

Note: Knockout of PIPO ORF is lethal for the virus. Because of a common N-terminus, some results depicted for the genome polyprotein might belong to the PIPO isoform.
Isoform Genome polyprotein (identifier: Q02597-1)

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.
Note: Produced by conventional translation.
Isoform PIPO (identifier: Q02597-2)

Also known as: Pretty interesting potyviridae ORF;

The sequence of this isoform differs from the canonical sequence as follows:
     982-1051: LEKSYLQILD...WSKQQAKGVK → GKKLSSADLG...EQTASKRSER
     1052-3163: Missing.
Note: Produced by ribosomal frameshifting.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 362362P1 proteinase Potential
PRO_0000040473
Chain363 – 820458Helper component proteinase Potential
PRO_0000040474
Chain821 – 1175355Protein P3 By similarity
PRO_0000040475
Chain1176 – 1227526 kDa protein 1 By similarity
PRO_0000040476
Chain1228 – 1870643Cytoplasmic inclusion protein By similarity
PRO_0000040477
Chain1871 – 1923536 kDa protein 2 By similarity
PRO_0000040478
Chain1924 – 2115192Viral genome-linked protein By similarity
PRO_0000040479
Chain2116 – 2358243Nuclear inclusion protein A By similarity
PRO_0000040480
Chain2359 – 2875517Nuclear inclusion protein B By similarity
PRO_0000040481
Chain2876 – 3163288Coat protein By similarity
PRO_0000040482

Regions

Domain1300 – 1452153Helicase ATP-binding
Domain1471 – 1630160Helicase C-terminal
Domain2600 – 2724125RdRp catalytic
Nucleotide binding1313 – 13208ATP Potential
Motif414 – 4174Involved in interaction with stylet and aphid transmission By similarity
Motif672 – 6743Involved in virions binding and aphid transmission By similarity
Motif1402 – 14054DECH box
Motif1964 – 19718Nuclear localization signal Potential

Sites

Active site2701For P1 proteinase activity By similarity
Active site2791For P1 proteinase activity Potential
Active site3131For P1 proteinase activity By similarity
Active site7061For helper component proteinase activity By similarity
Active site7791For helper component proteinase activity By similarity
Active site21611For nuclear inclusion protein A activity By similarity
Active site21961For nuclear inclusion protein A activity By similarity
Active site22661For nuclear inclusion protein A activity By similarity
Site362 – 3632Cleavage; by P1 proteinase Potential
Site820 – 8212Cleavage; by HC-pro Potential
Site1175 – 11762Cleavage; by NIa-pro By similarity
Site1227 – 12282Cleavage; by NIa-pro By similarity
Site1870 – 18712Cleavage; by NIa-pro By similarity
Site2115 – 21162Cleavage; by NIa-pro By similarity
Site2358 – 23592Cleavage; by NIa-pro By similarity
Site2875 – 28762Cleavage; by NIa-pro By similarity

Amino acid modifications

Modified residue19861O-(5'-phospho-RNA)-tyrosine By similarity

Natural variations

Alternative sequence982 – 105170LEKSY…AKGVK → GKKLSSADLGRGMERVKLVG ALCYKILPVKASNLYTERFA NAKRSRFRRQIQRVGHILLR VEQTASKRSER in isoform PIPO.
VSP_034776
Alternative sequence1052 – 31632112Missing in isoform PIPO.
VSP_034777

Experimental info

Sequence conflict28621E → G in BAA01452. Ref.2

Sequences

Sequence LengthMass (Da)Tools
Isoform Genome polyprotein [UniParc].

Last modified June 1, 1994. Version 2.
Checksum: 61B0F73B58DF6D59

FASTA3,163357,822
        10         20         30         40         50         60 
MAAVTFASAI TNAITNKTTS TGMVQFGSFP PMPLRSTTVT TVATPVGQPK LYTVRFGSLD 

        70         80         90        100        110        120 
PVIVKGGAGS LAKATRQQPS VEIDVSLSEA AALEVAKPKS SAVLRMHEEA NKERALFLDW 

       130        140        150        160        170        180 
EASLKRRSYG IAENEKVVMT TRGVSKIVPR SSRAMKQKRA RERRRAQQPI ILKWEPKLSG 

       190        200        210        220        230        240 
FSIGGGFSAS AIEAEEVRTK WPLHKTPSMK KRMVHKTCKM SDQGVDMLIR SLVKIFKAKS 

       250        260        270        280        290        300 
ANIEYIGKKP IKVDFIRKER TKFARIQVAH LLGKRAQRDL LAGMEENHFI DILSEYSGNG 

       310        320        330        340        350        360 
TTINPGVVCA GWSGIVVRNE TLTQKRSRSP SKAFVIRGEH EDKLYDARIK ITKTMSLKIV 

       370        380        390        400        410        420 
HFSARGANFW KGFDRCFLAY RSDNREHTCY SGLDVTECGE VAALMCLAMF PCGKITCPDC 

       430        440        450        460        470        480 
VIDSELSQGQ ASGPSMKHRL TQLRDVIKSS YPRFKHAVQI LDRYEQSLSS ANENYQDFAE 

       490        500        510        520        530        540 
IQSISDGVEK AAFPHVNKLN AILIKGATAT GEEFSQATKH LLEIARYLKN RTENIEKGSL 

       550        560        570        580        590        600 
KSFRNKVSQK AHINPTLMCD NQLDKNGNFI WGERGYHAKR FFSNYFEIID PKKGYTQYET 

       610        620        630        640        650        660 
RVVPNGSRKL AIGKLIVPTN FEVLREQMRG EPVEPYPVTV ECVSKSQGDF VHACCCVTTE 

       670        680        690        700        710        720 
SGDPVLSEIK MPTKHHLVIG NSGDPKYIDL PEIEENKMYI AKEGYCYINI FLAMLVNVKE 

       730        740        750        760        770        780 
SQAKEFTKVV RDKLVSELGK WPTLLDVATA CYFLKVFYPD VANAELPRML VDHKTKIIHV 

       790        800        810        820        830        840 
VDSYGSLSTG YHVLKTNTVE QLIKFTRCNL ESSLKHYRVG GTEWENAHGA DNIDNPQWCI 

       850        860        870        880        890        900 
KRLVKGVYRP KQLKEDMLAN PFLPLYALLS PGVILAFYNS GSLEHLMNHY ISADSNVAVL 

       910        920        930        940        950        960 
LVVLKSLAKK VSTSQSVLAQ LQIIERSLPE LIEAKANING PDDAATRACN RFMGMLLHMA 

       970        980        990       1000       1010       1020 
EPNYELANGG YTFLRDHSIS ILEKSYLQIL DEAWNELSWS ERCVIRYYPS KQAIFTQKDL 

      1030       1040       1050       1060       1070       1080 
PMQSEADLGG RYSESVISSY EWSKQQAKGV KDSVVNKLRS SMSWTSSKVS NSVCRTINYL 

      1090       1100       1110       1120       1130       1140 
VPDVFKFMNV LVCISLLIKM TAEANHIITT QRRLKLDIEE TERKKIEWEL AFHHNILTHS 

      1150       1160       1170       1180       1190       1200 
ASQHPTLDEF TAYIAEKAPH LSEHIEPEEK EVVHQAKRQS EQELERVIAF VALVLMMFDA 

      1210       1220       1230       1240       1250       1260 
ERSDCVTKIL NKLKGLVATV EPTVYHQTLN EIEDDLNERN LFVDFELSSD SEMLQQLPAE 

      1270       1280       1290       1300       1310       1320 
KTFASWWSHQ LSRGFTIPHY RTEGKFMTFT RATATEVAGK IAHESDKDIL LMGAVGSGKS 

      1330       1340       1350       1360       1370       1380 
TGLPYHLSRK GNVLLLEPTR PLAENVHKQL SQAPFHQNTT LRMRGLTAFG SAPISVMTSG 

      1390       1400       1410       1420       1430       1440 
FALNYFANNR SRIEEFDFVI FDECHVHDAN AMAMRCLIHE CDYSGKIIKV SATPPGREVE 

      1450       1460       1470       1480       1490       1500 
FSTQYPVSIS TEDTLSFQDF VNAQGSGSNC DVISKGDNIL VYVASYNEVD TLSKLLIERD 

      1510       1520       1530       1540       1550       1560 
FKVTKVDGRT MKVGNIEITT SGTPSRKHFI VATNIIENGV TLDIDVVADF GTKVLPYLDT 

      1570       1580       1590       1600       1610       1620 
DNRMLSTTKT SINYGERIQR LGRVGRHKPG HALRIGHTER GLSEVPSCIA TEAALKCFTY 

      1630       1640       1650       1660       1670       1680 
GLPVITNNVS TSILGNVTVK QARTMSVFEI TPFYTSQVVR YDGSMHPQVH ALLKRFKLRD 

      1690       1700       1710       1720       1730       1740 
SEIVLTKLAI PNRGVNAGSQ PVSMHDSVQM LKIGVTLRIP FMCRDIPEKL HLDMWDVVVK 

      1750       1760       1770       1780       1790       1800 
FKGDAGFGRL SSSASKVAYT LQTDVNSIQR TVTIIDTLIA EERRKQEYFK TVTSNCVSSS 

      1810       1820       1830       1840       1850       1860 
NFSLQSITNA IKSRMMKDHP CENISVLEGA KSQLLEFRNL NSDHSFVTKT DGISRSFMRD 

      1870       1880       1890       1900       1910       1920 
YGALEAVNHQ STNEMSKFLQ LKGKWNKTLI TRDVLVICGV LGGGVWMVVQ HFRSKVSEPV 

      1930       1940       1950       1960       1970       1980 
THEAKGKKQR QKLKFRNARD NKMGREVYGD DDTIEHFFGD AYTKKGKSKG RTRGIGHKNR 

      1990       2000       2010       2020       2030       2040 
KFINMYGFDP EDFSAVRFVD PLTGATLDDN PFTDITLVQK HFGDIRMDLL GEDELDSNEI 

      2050       2060       2070       2080       2090       2100 
RMNKTIQAYY MNNKTGKALK VDLTPHIPLK VCDLHATIAG FPERENELRQ TGKAQPINID 

      2110       2120       2130       2140       2150       2160 
EVPRANNELV PVDHESNSMF RGLRDYNPIS NNICHLTNVS DGASNSLYGV GFGPLILTNR 

      2170       2180       2190       2200       2210       2220 
HLFERNNGEL IIKSRHGEFV IKNTTQLHLL PIPDRDLLLI RLPKDVPPFP QKLGFRQPEK 

      2230       2240       2250       2260       2270       2280 
GERICMVGSN FQTKSITSIV SETSTIMPVE NSQFWKHWIS TKDGQCGSPM VSTKDGKILG 

      2290       2300       2310       2320       2330       2340 
LHSLANFQNS INYFAAFPDD FTEKYLHTIE AHEWVKHWKY NTSAISWGSL NIQASQPVSL 

      2350       2360       2370       2380       2390       2400 
FKVSKLISDL DSTAVYAQTQ QNRWMFEQLT GNLKAIAHCP SQLVTKHTVK GKCQMFDLYL 

      2410       2420       2430       2440       2450       2460 
KLHDEAREYF QPMLGQYQKS KLNREAYAKD LLKYATPIEA GNIDCDLFEK TVEIVISDLR 

      2470       2480       2490       2500       2510       2520 
GYGFETCNYV TDENDIFEAL NMKSAVGALY KGKKKDYFAE FTPEVKEEIL KQSCERLFLG 

      2530       2540       2550       2560       2570       2580 
KMGVWNGSLK AELRPLEKVE ANKTRTFTAA PLDTLLGGKV CVDDFNNQFY DHNLRAPWDV 

      2590       2600       2610       2620       2630       2640 
GMTKFYCGWD RLLESLPDGW VYCDADGSQF DSSLSPYLIN AVLNIRLGFM EEWDVGEVML 

      2650       2660       2670       2680       2690       2700 
RNLYTEIVYT PISTPDGTLV KKFKGNNSGQ PSTVVDNTLM VILAVNYSLK KGGIPSELRD 

      2710       2720       2730       2740       2750       2760 
SIIRFFVNGD DLLLSVHPEY EYILDTMADN FRELGLKYTF DSRTREKGDL WFMSHQGHRR 

      2770       2780       2790       2800       2810       2820 
EGIWIPKLEP ERIVSILEWD RSKEPCHRLE AICAAMIESW GYDKLTHEIR KFYAWMIEQA 

      2830       2840       2850       2860       2870       2880 
PFSSLAQEGK APYIAETALR KLYLDKEPAQ EDLTQYLQAI FEDYEDGVEA CVYHQAGETL 

      2890       2900       2910       2920       2930       2940 
DADLTEEQKQ AEKEKKEREK AEKERERQKQ LAFKKGKDVA QEEGKRDKEV NAGTSGTFSV 

      2950       2960       2970       2980       2990       3000 
PRLKSLTSKM RVPRYEKRVA LNLDHLILYT PEQTDLSNTR STRKQFDTWF EGVMADYELT 

      3010       3020       3030       3040       3050       3060 
EDKMQIILNG LRVWCIENGT SPNINGMWVM MDGDDQVEFP IKPLIDHAKP TFRQIMAHFS 

      3070       3080       3090       3100       3110       3120 
DVAEAYIEKR NQDRPYMPRY GLQRNLTDMS LARYAFDFYE MTSRTPIRAR EAHIQMKAAA 

      3130       3140       3150       3160 
LRGANNNLFG LDGNVGTTVE NTERHTTEDV NRNMHNLLGV QGL 

« Hide

Isoform PIPO (Pretty interesting potyviridae ORF).

Checksum: 4C31B83756B4CB58
Show »

FASTA1,052117,858

References

[1]"The complete nucleotide sequence of turnip mosaic potyvirus RNA."
Nicolas O., Laliberte J.F.
J. Gen. Virol. 73:2785-2793(1992) [PubMed: 1431807] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA] (ISOFORM GENOME POLYPROTEIN).
[2]"Sequence of the 3'-terminal region of turnip mosaic virus RNA and the capsid protein gene."
Tremblay M.F., Nicolas O., Sinha R., Lazure C., Laliberte J.F.
J. Gen. Virol. 71:2769-2772(1990) [PubMed: 2254757] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [GENOMIC RNA] OF 1534-3163 (ISOFORM GENOME POLYPROTEIN), PARTIAL PROTEIN SEQUENCE.
[3]"An overlapping essential gene in the Potyviridae."
Chung B.Y.-W., Miller W.A., Atkins J.F., Firth A.E.
Proc. Natl. Acad. Sci. U.S.A. 105:5897-5902(2008) [PubMed: 18408156] [Abstract]
Cited for: RIBOSOMAL FRAMESHIFT (ISOFORM PIPO).
[4]"Potyvirus proteins: a wealth of functions."
Urcuqui-Inchima S., Haenni A.L., Bernardi F.
Virus Res. 74:157-175(2001) [PubMed: 11226583] [Abstract]
Cited for: REVIEW.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
D10927 Genomic RNA. Translation: BAA01725.1.
D10601 Genomic RNA. Translation: BAA01452.1.
PIRJQ1895.

3D structure databases

SMRQ02597. Positions 1305-1596, 1313-1673, 2124-2337.
ModBaseSearch...

Protein family/group databases

MEROPSC04.001.

Family and domain databases

InterProIPR014001. DEAD-like_N.
IPR001650. DNA/RNA_helicase_C.
IPR011545. DNA/RNA_helicase_DEAD/DEAH_N.
IPR014021. Helicase_SF1/SF2_ATP-bd.
IPR002540. Pept_S30_P1_potyvir.
IPR001730. Peptidase_C4.
IPR001456. Peptidase_C6.
IPR001592. Poty_coat.
IPR013648. PP_Potyviridae.
IPR001205. RNA-dir_pol_picornavirus.
IPR007094. RNA-dir_pol_PSvirus.
IPR009003. Ser/Cys_Pept_Trypsin-like.
[Graphical view]
PfamPF00270. DEAD. 1 hit.
PF00271. Helicase_C. 1 hit.
PF00863. Peptidase_C4. 1 hit.
PF00851. Peptidase_C6. 1 hit.
PF01577. Peptidase_S30. 1 hit.
PF00767. Poty_coat. 1 hit.
PF08440. Poty_PP. 1 hit.
PF00680. RdRP_1. 1 hit.
[Graphical view]
PRINTSPR00966. NIAPOTYPTASE.
SMARTSM00487. DEXDc. 1 hit.
SM00490. HELICc. 1 hit.
[Graphical view]
PROSITEPS51192. HELICASE_ATP_BIND_1. 1 hit.
PS51194. HELICASE_CTER. 1 hit.
PS50507. RDRP_SSRNA_POS. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry namePOLG_TUMVQ
AccessionPrimary (citable) accession number: Q02597
Entry history
Integrated into UniProtKB/Swiss-Prot: July 1, 1993
Last sequence update: June 1, 1994
Last modified: January 19, 2010
This is version 91 of the entry and version 2 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation projectVirus (Virus annotation project)

Relevant documents

Peptidase families

Classification of peptidase families and list of entries

SIMILARITY comments

Index of protein domains and families

Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Alternative products · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents