VE2_HPV63
ID VE2_HPV63 Reviewed; 398 AA.
AC Q07850;
DT 01-OCT-1994, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-1994, sequence version 1.
DT 23-FEB-2022, entry version 112.
DE RecName: Full=Regulatory protein E2 {ECO:0000255|HAMAP-Rule:MF_04001};
GN Name=E2 {ECO:0000255|HAMAP-Rule:MF_04001};
OS Human papillomavirus type 63.
OC Viruses; Monodnaviria; Shotokuvirae; Cossaviricota; Papovaviricetes;
OC Zurhausenvirales; Papillomaviridae; Firstpapillomavirinae;
OC Mupapillomavirus.
OX NCBI_TaxID=28311;
OH NCBI_TaxID=9606; Homo sapiens (Human).
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=8389082; DOI=10.1006/viro.1993.1320;
RA Egawa K., Delius H., Matsukura T., Kawashima M., de Villiers E.M.;
RT "Two novel types of human papillomavirus, HPV 63 and HPV 65: comparisons of
RT their clinical and histological features and DNA sequences to other HPV
RT types.";
RL Virology 194:789-799(1993).
CC -!- FUNCTION: Plays a role in the initiation of viral DNA replication. A
CC dimer of E2 interacts with a dimer of E1 in order to improve
CC specificity of E1 DNA binding activity. Once the complex recognizes and
CC binds DNA at specific sites, the E2 dimer is removed from DNA. E2 also
CC regulates viral transcription through binding to the E2RE response
CC element (5'-ACCNNNNNNGGT-3') present in multiple copies in the
CC regulatory regions of the viral genome. Activates or represses
CC transcription depending on E2RE's position with regards to proximal
CC promoter elements including the TATA-box. Repression occurs by
CC sterically hindering the assembly of the transcription initiation
CC complex. {ECO:0000255|HAMAP-Rule:MF_04001}.
CC -!- SUBUNIT: Binds DNA as homodimer. Interacts with protein E1; this
CC interaction greatly increases E1 DNA-binding activity. Interacts with
CC protein L1; this interaction enhances E2-dependent replication and
CC transcription activation. Interacts with protein L2; this interaction
CC inhibits E2 transcriptional activity but not DNA replication function
CC E2. Interacts with protein E7; this interaction inhibits E7 oncogenic
CC activity. Interacts with host TAF1; this interaction modulates E2-
CC dependent transcriptional regulation. Interacts with host BRD4; this
CC interaction mediates E2 transcriptional activation function.
CC Additionally, the interaction with host BRD4 on mitotic chromosomes
CC mediates tethering of the viral genome. Interacts with host TOPBP1;
CC this interaction is required for optimal viral DNA replication.
CC {ECO:0000255|HAMAP-Rule:MF_04001}.
CC -!- SUBCELLULAR LOCATION: Host nucleus {ECO:0000255|HAMAP-Rule:MF_04001}.
CC -!- PTM: Phosphorylated. {ECO:0000255|HAMAP-Rule:MF_04001}.
CC -!- PTM: Sumoylation plays a regulatory role in E2 transcriptional
CC activity. {ECO:0000255|HAMAP-Rule:MF_04001}.
CC -!- SIMILARITY: Belongs to the papillomaviridae E2 protein family.
CC {ECO:0000255|HAMAP-Rule:MF_04001}.
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DR EMBL; X70828; CAA50167.1; -; Genomic_DNA.
DR RefSeq; NP_040899.1; NC_001458.1.
DR SMR; Q07850; -.
DR GeneID; 1494571; -.
DR KEGG; vg:1494571; -.
DR Proteomes; UP000007671; Genome.
DR GO; GO:0042025; C:host cell nucleus; IEA:UniProtKB-SubCell.
DR GO; GO:0003677; F:DNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0003700; F:DNA-binding transcription factor activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000166; F:nucleotide binding; IEA:UniProtKB-UniRule.
DR GO; GO:0006260; P:DNA replication; IEA:UniProtKB-KW.
DR GO; GO:0006275; P:regulation of DNA replication; IEA:UniProtKB-UniRule.
DR GO; GO:0006351; P:transcription, DNA-templated; IEA:UniProtKB-UniRule.
DR GO; GO:0039693; P:viral DNA genome replication; IEA:UniProtKB-UniRule.
DR Gene3D; 1.10.287.30; -; 1.
DR Gene3D; 2.170.200.10; -; 1.
DR Gene3D; 3.30.70.330; -; 1.
DR HAMAP; MF_04001; PPV_E2; 1.
DR InterPro; IPR035975; E2/EBNA1_C_sf.
DR InterPro; IPR012677; Nucleotide-bd_a/b_plait_sf.
DR InterPro; IPR000427; Papillomavirus_E2_C.
DR InterPro; IPR001866; Papillomavirus_E2_N.
DR InterPro; IPR033668; Reg_prot_E2.
DR InterPro; IPR036050; Regulatory_protein_E2_N.
DR InterPro; IPR042503; Regulatory_protein_E2_N_1.
DR InterPro; IPR042504; Regulatory_protein_E2_N_2.
DR Pfam; PF00511; PPV_E2_C; 1.
DR Pfam; PF00508; PPV_E2_N; 1.
DR SUPFAM; SSF51332; SSF51332; 1.
DR SUPFAM; SSF54957; SSF54957; 1.
PE 3: Inferred from homology;
KW Activator; DNA replication; DNA-binding; Early protein; Host nucleus;
KW Isopeptide bond; Phosphoprotein; Reference proteome; Repressor;
KW Transcription; Transcription regulation; Ubl conjugation.
FT CHAIN 1..398
FT /note="Regulatory protein E2"
FT /id="PRO_0000133239"
FT REGION 1..205
FT /note="Transactivation domain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_04001"
FT REGION 197..304
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 314..398
FT /note="DNA-binding domain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_04001"
FT COMPBIAS 197..230
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 240..255
FT /note="Basic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT CROSSLNK 321
FT /note="Glycyl lysine isopeptide (Lys-Gly) (interchain with
FT G-Cter in SUMO)"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_04001"
SQ SEQUENCE 398 AA; 45450 MW; CC1020C554B0E976 CRC64;
MESLNNRLDW LQEQLLTLYE KDSKDIEDQI MQWNLLRQEQ VLFHYARKKG IMRLGLQVVP
SLAASQDKAK TAIEMTLYLS GLRDSQYGSE QWSLQDTSRE IFLAPPDHTF KKGGQTIEVI
YDEDPNNSTR HTVWRHIYYQ NGDNRWRKAA SDVDVHGVFY LEYDGVKNYY VDFQEEANRY
SKTGRYTVQY EGKRFTNVMS PVNSSPLRTS GSPTDTNPAT QGQSTQTARK AETKGSRHHP
KSPAVRKRRP YGRRRSRSPR DTTLRRGEGE SARASAGSGE RVAFISPGDV GTSTRSPPKG
GQSRLRRLIQ EARDPPIICL KGGPNQLKCL RYRIKASNSS DFESISTTWH WVHNKCTDRV
GHARMLVRFI STEQRDRFLD KVVVPKSVSV ILGAFDGS
