VE2_HPV20
ID VE2_HPV20 Reviewed; 497 AA.
AC P50766;
DT 01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-1996, sequence version 1.
DT 23-FEB-2022, entry version 81.
DE RecName: Full=Regulatory protein E2 {ECO:0000255|HAMAP-Rule:MF_04001};
GN Name=E2 {ECO:0000255|HAMAP-Rule:MF_04001};
OS Human papillomavirus 20.
OC Viruses; Monodnaviria; Shotokuvirae; Cossaviricota; Papovaviricetes;
OC Zurhausenvirales; Papillomaviridae; Firstpapillomavirinae;
OC Betapapillomavirus.
OX NCBI_TaxID=31547;
OH NCBI_TaxID=9606; Homo sapiens (Human).
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA Delius H.;
RL Submitted (OCT-1995) to the EMBL/GenBank/DDBJ databases.
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 -!- SIMILARITY: Belongs to the papillomaviridae E2 protein family.
CC {ECO:0000255|HAMAP-Rule:MF_04001}.
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DR EMBL; U31778; AAA79390.1; -; Genomic_DNA.
DR SMR; P50766; -.
DR Proteomes; UP000008230; 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 Phosphoprotein; Repressor; Transcription; Transcription regulation.
FT CHAIN 1..497
FT /note="Regulatory protein E2"
FT /id="PRO_0000133199"
FT REGION 1..201
FT /note="Transactivation domain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_04001"
FT REGION 197..393
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT REGION 413..497
FT /note="DNA-binding domain"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_04001"
FT COMPBIAS 197..245
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 246..305
FT /note="Basic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 310..345
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 357..372
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 379..393
FT /note="Polar residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ SEQUENCE 497 AA; 56120 MW; 497CA228E3537CE5 CRC64;
MENLSKRFNA LQDQLMNIYE SAPDTLESQI EHWQTLRKEA VLLYFARQHG ISRVGYQPVP
VLAVSEAKAK QAIGMVLRLQ SLQKSEYGSE PWSLVDASAE TFRSPPENHF KKGPISVEVI
YDKDKDNANA YTMWRFVYYQ DDDDKWHKSA SGVNQTGIYF MQGTFRHYYV LFADDASRYS
TTGQWEVKVN KETVFAPVTS STPPDSPGGQ ADSNASSQTP ATTTDSTTRQ SPRKQSQQTN
TKGRRYGRRP SSRTRRTTQT RQRRRSRSKS KSKSRSRSRS RHRSRSRSRS ESPRRRSRYR
SRSGSRGRVA LRAITTTTTT TTRRAGGGSP TSTSSTTSQR SRQLRGGGRG GSRQRARGRR
SSSTSPTPSK RSRGESESVR QHGISPSDVG TAVYTVSSRH TGRLGRLLDE ALDPPVILVR
GEPNTLKCFR NRAKQRYTGL YKSFSTAWSW VAGDGTERLG RSRMLISFIS FSQRKDFDET
VKYPKGVDRS FGSFDSL
