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IE2_NPVAC
ID   IE2_NPVAC               Reviewed;         408 AA.
AC   P24647;
DT   01-MAR-1992, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1995, sequence version 2.
DT   29-SEP-2021, entry version 96.
DE   RecName: Full=E3 ubiquitin-protein ligase IE2;
DE            EC=2.3.2.27;
DE   AltName: Full=Immediate-early protein IE2;
DE   AltName: Full=RING-type E3 ubiquitin transferase IE2 {ECO:0000305};
GN   Name=IE2; ORFNames=ORF151;
OS   Autographa californica nuclear polyhedrosis virus (AcMNPV).
OC   Viruses; Naldaviricetes; Lefavirales; Baculoviridae; Alphabaculovirus.
OX   NCBI_TaxID=46015;
OH   NCBI_TaxID=7088; Lepidoptera (butterflies and moths).
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC   STRAIN=E2;
RX   PubMed=2024466; DOI=10.1016/0042-6822(91)90671-w;
RA   Carson D.D., Summers M.D., Guarino L.A.;
RT   "Molecular analysis of a baculovirus regulatory gene.";
RL   Virology 182:279-286(1991).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=C6;
RX   PubMed=8030224; DOI=10.1006/viro.1994.1380;
RA   Ayres M.D., Howard S.C., Kuzio J., Lopez-Ferber M., Possee R.D.;
RT   "The complete DNA sequence of Autographa californica nuclear polyhedrosis
RT   virus.";
RL   Virology 202:586-605(1994).
RN   [3]
RP   SUBCELLULAR LOCATION, AND FUNCTION.
RX   PubMed=8009830; DOI=10.1006/viro.1994.1332;
RA   Yoo S., Guarino L.A.;
RT   "Functional dissection of the ie2 gene product of the baculovirus
RT   Autographa californica nuclear polyhedrosis virus.";
RL   Virology 202:164-172(1994).
RN   [4]
RP   SUBCELLULAR LOCATION.
RX   PubMed=11262179; DOI=10.1006/excr.2000.5081;
RA   Murges D., Quadt I., Schroeer J., Knebel-Moersdorf D.;
RT   "Dynamic nuclear localization of the baculovirus proteins IE2 and PE38
RT   during the infection cycle: the promyelocytic leukemia protein colocalizes
RT   with IE2.";
RL   Exp. Cell Res. 264:219-232(2001).
RN   [5]
RP   FUNCTION, AND SUBCELLULAR LOCATION.
RX   PubMed=11967334; DOI=10.1128/jvi.76.10.5198-5207.2002;
RA   Mainz D., Quadt I., Knebel-Moersdorf D.;
RT   "Nuclear IE2 structures are related to viral DNA replication sites during
RT   baculovirus infection.";
RL   J. Virol. 76:5198-5207(2002).
CC   -!- FUNCTION: RING-finger E3 ubiquitin ligase that plays an important
CC       regulatory role during the initial stages of infection. Migrates to
CC       specific nuclear foci early in infection supposely to prepare the sites
CC       for viral transcription and replication by targeting and ubiquitinating
CC       host proteins. Acts as a transcriptional activator and activates a
CC       number of viral promoters including itself, IE1 and the promoter of 39K
CC       gene. {ECO:0000250|UniProtKB:O92503, ECO:0000269|PubMed:11967334,
CC       ECO:0000269|PubMed:8009830}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine +
CC         [acceptor protein]-L-lysine = [E2 ubiquitin-conjugating enzyme]-L-
CC         cysteine + N(6)-ubiquitinyl-[acceptor protein]-L-lysine.;
CC         EC=2.3.2.27;
CC   -!- SUBUNIT: Homooligomer. {ECO:0000250|UniProtKB:O92503}.
CC   -!- SUBCELLULAR LOCATION: Host nucleus {ECO:0000269|PubMed:11262179,
CC       ECO:0000269|PubMed:11967334, ECO:0000269|PubMed:8009830}.
CC   -!- PTM: Auto-ubiquitinated. {ECO:0000250|UniProtKB:O92503}.
CC   -!- SIMILARITY: Belongs to the alphabaculovirus IE2 protein family.
CC       {ECO:0000305}.
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DR   EMBL; M59422; AAA46701.1; -; Genomic_DNA.
DR   EMBL; L22858; AAA66781.1; -; Genomic_DNA.
DR   PIR; A39150; WMNVIA.
DR   PIR; A72869; A72869.
DR   RefSeq; NP_054182.1; NC_001623.1.
DR   SMR; P24647; -.
DR   GeneID; 1403984; -.
DR   KEGG; vg:1403984; -.
DR   Proteomes; UP000008292; Genome.
DR   GO; GO:0042025; C:host cell nucleus; IDA:UniProtKB.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0016740; F:transferase activity; IEA:UniProtKB-KW.
DR   GO; GO:0039648; P:modulation by virus of host protein ubiquitination; IEA:UniProtKB-KW.
DR   GO; GO:0046782; P:regulation of viral transcription; IDA:UniProtKB.
DR   InterPro; IPR018957; Znf_C3HC4_RING-type.
DR   InterPro; IPR001841; Znf_RING.
DR   InterPro; IPR017907; Znf_RING_CS.
DR   Pfam; PF00097; zf-C3HC4; 1.
DR   PROSITE; PS00518; ZF_RING_1; 1.
DR   PROSITE; PS50089; ZF_RING_2; 1.
PE   3: Inferred from homology;
KW   Activator; DNA-binding; Early protein; Host nucleus;
KW   Host-virus interaction; Metal-binding;
KW   Modulation of host ubiquitin pathway by viral E3 ligase;
KW   Modulation of host ubiquitin pathway by virus; Reference proteome; Repeat;
KW   Transcription; Transcription regulation; Transferase; Ubl conjugation;
KW   Ubl conjugation pathway; Zinc; Zinc-finger.
FT   CHAIN           1..408
FT                   /note="E3 ubiquitin-protein ligase IE2"
FT                   /id="PRO_0000056350"
FT   REPEAT          34..41
FT                   /note="1-1"
FT   REPEAT          42..49
FT                   /note="1-2"
FT   REPEAT          51..54
FT                   /note="2-1"
FT   REPEAT          55..58
FT                   /note="2-2"
FT   ZN_FING         207..255
FT                   /note="RING-type"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU00175"
FT   REGION          1..67
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   REGION          34..49
FT                   /note="2 X 8 AA tandem repeats of Q-P-S-S-S-S-R-S"
FT   REGION          51..58
FT                   /note="2 X 4 AA tandem repeats of R-R-Q-E"
FT   REGION          176..199
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        1..15
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        23..46
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        47..62
FT                   /note="Basic and acidic residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   CONFLICT        138
FT                   /note="A -> R (in Ref. 1; AAA46701)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   408 AA;  47007 MW;  DDB6F4862CCD8553 CRC64;
     MSRQINAATP SSSRRHRLSL SRRRINFTTS PEAQPSSSSR SQPSSSSRSH RRQERRQEQR
     VSEENVQIIG NVNEPLTRTY HRQGVTYYVH GQVNISNDDP LLSQEDDVIL INSENVDRER
     FPDITAQQYQ DNIASETAAQ RALQRGLDLE AQLMNEIAPR SPTYSPSYSP NYVIPQSPDL
     FASPQSPQPQ QQQQQQSEPE EEVEVSCNIC FTTFKDTKNV NSSFVTSIHC NHAVCFKCYV
     KIIMDNSVYK CFCSATSSDC RVYNKHGYVE FMPINVTRNQ DSIKQHWREL LENNTVNNHT
     TDLNYVEQLQ KELSELRAKT SQVEHKMTML NSDYIMLKHK HAVAELDLQK ANYDLQESTK
     KSEELQSTVN NLQEQLRKQV AESQAKFSEF ERSNSDLVSK LQTVMSRR
 
 
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