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VL1_HPV09
ID   VL1_HPV09               Reviewed;         507 AA.
AC   Q02480;
DT   01-JUL-1993, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-1994, sequence version 2.
DT   02-JUN-2021, entry version 98.
DE   RecName: Full=Major capsid protein L1 {ECO:0000255|HAMAP-Rule:MF_04002};
GN   Name=L1 {ECO:0000255|HAMAP-Rule:MF_04002};
OS   Human papillomavirus 9.
OC   Viruses; Monodnaviria; Shotokuvirae; Cossaviricota; Papovaviricetes;
OC   Zurhausenvirales; Papillomaviridae; Firstpapillomavirinae;
OC   Betapapillomavirus.
OX   NCBI_TaxID=10621;
OH   NCBI_TaxID=9606; Homo sapiens (Human).
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=8205838; DOI=10.1007/978-3-642-78487-3_2;
RA   Delius H., Hofmann B.;
RT   "Primer-directed sequencing of human papillomavirus types.";
RL   Curr. Top. Microbiol. Immunol. 186:13-31(1994).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 312-355.
RX   PubMed=1326639; DOI=10.1128/jvi.66.10.5714-5725.1992;
RA   Chan S.-Y., Bernard H.U., Ong C.K., Chan S.P., Birgit H., Delius H.;
RT   "Phylogenetic analysis of 48 papillomavirus types and 28 subtypes and
RT   variants: a showcase for the molecular evolution of DNA viruses.";
RL   J. Virol. 66:5714-5725(1992).
CC   -!- FUNCTION: Forms an icosahedral capsid with a T=7 symmetry and a 50 nm
CC       diameter. The capsid is composed of 72 pentamers linked to each other
CC       by disulfide bonds and associated with L2 proteins. Binds to heparan
CC       sulfate proteoglycans on cell surface of basal layer keratinocytes to
CC       provide initial virion attachment. This binding mediates a
CC       conformational change in the virus capsid that facilitates efficient
CC       infection. The virion enters the host cell via endocytosis. During
CC       virus trafficking, L1 protein dissociates from the viral DNA and the
CC       genomic DNA is released to the host nucleus. The virion assembly takes
CC       place within the cell nucleus. Encapsulates the genomic DNA together
CC       with protein L2. {ECO:0000255|HAMAP-Rule:MF_04002}.
CC   -!- SUBUNIT: Self-assembles into homopentamers. The capsid has an
CC       icosahedral symmetry and consists of 72 capsomers, with each capsomer
CC       being a pentamer of L1. Interacts with the minor capsid protein L2;
CC       this interaction is necessary for viral genome encapsidation. Interacts
CC       with protein E2; this interaction enhances E2-dependent replication and
CC       transcription activation. {ECO:0000255|HAMAP-Rule:MF_04002}.
CC   -!- SUBCELLULAR LOCATION: Virion {ECO:0000255|HAMAP-Rule:MF_04002}. Host
CC       nucleus {ECO:0000255|HAMAP-Rule:MF_04002}.
CC   -!- SIMILARITY: Belongs to the papillomaviridae L1 protein family.
CC       {ECO:0000255|HAMAP-Rule:MF_04002}.
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DR   EMBL; X74464; CAA52488.1; -; Genomic_DNA.
DR   EMBL; M96301; AAA47040.1; -; Genomic_DNA.
DR   PIR; S36595; S36595.
DR   RefSeq; NP_041866.1; NC_001596.1.
DR   SMR; Q02480; -.
DR   DNASU; 1489482; -.
DR   GeneID; 1489482; -.
DR   KEGG; vg:1489482; -.
DR   Proteomes; UP000009104; Genome.
DR   GO; GO:0042025; C:host cell nucleus; IEA:UniProtKB-SubCell.
DR   GO; GO:0039620; C:T=7 icosahedral viral capsid; IEA:UniProtKB-UniRule.
DR   GO; GO:0005198; F:structural molecule activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0075509; P:endocytosis involved in viral entry into host cell; IEA:UniProtKB-KW.
DR   GO; GO:0019062; P:virion attachment to host cell; IEA:UniProtKB-UniRule.
DR   Gene3D; 2.60.175.20; -; 2.
DR   HAMAP; MF_04002; PPV_L1; 1.
DR   InterPro; IPR002210; Capsid_L1_Papillomavir.
DR   InterPro; IPR036973; Capsid_L1_sf_Papillomavir.
DR   InterPro; IPR011222; dsDNA_vir_gr_I_capsid.
DR   Pfam; PF00500; Late_protein_L1; 1.
DR   PRINTS; PR00865; HPVCAPSIDL1.
DR   SUPFAM; SSF88648; SSF88648; 1.
PE   3: Inferred from homology;
KW   Capsid protein; Disulfide bond; Host nucleus; Host-virus interaction;
KW   Late protein; Reference proteome; T=7 icosahedral capsid protein;
KW   Viral attachment to host cell; Viral penetration into host cytoplasm;
KW   Virion; Virus endocytosis by host; Virus entry into host cell.
FT   CHAIN           1..507
FT                   /note="Major capsid protein L1"
FT                   /id="PRO_0000133493"
FT   DISULFID        175
FT                   /note="Interchain (with C-439)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04002"
FT   DISULFID        439
FT                   /note="Interchain (with C-175)"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_04002"
SQ   SEQUENCE   507 AA;  57492 MW;  9BCA3AD3F031A62F CRC64;
     MSLWLPASGK VYLPPATPVA RVQSTDEYVE RTNIFYHAIS DRLLTVGHPY YDVRSGDGQR
     IEVPKVSGNQ YRAFRISLPD PNRFALADMS VYNPDKERLV WACRGIEIGR GQPLGVGTSG
     HPLFNKVRDT ENSSNYQGTT MDDRQNTSFD PKQVQMFIIG CIPCLGEHWD KAKVCEKDAN
     NQLGLCPPIE LRNTVIEDGD MFDIGFGNIN NKELSFNKSD VSLDIVDETC KYPDFLTMAN
     DVYGDACFFF ARREQCYARH YYVRGGSVGD AVPDGAVNQD HNFFLPAKSD QQQRTIANST
     YYPTVSGSLV TSDAQLFNRP FWLQRAQGHN NGILWGNQIF VTVADNTRNT NFTISVSTEA
     AQTEEYNANN IREYLRHVEE YQISLILQLC KVPLVAEVLS QINAMNSGIL EDWQLGFVPT
     PENAVHDIYR YIDSKATKCP DAVEPTEKED PFAKYSFWKV DLTERLSLDL DQYPLGRKFL
     FQAGLQTRKR PIKTSVKTSK NAKRRRT
 
 
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