LAP_RFVKA
ID LAP_RFVKA Reviewed; 201 AA.
AC Q9Q8T2;
DT 10-AUG-2010, integrated into UniProtKB/Swiss-Prot.
DT 01-MAY-2000, sequence version 1.
DT 03-AUG-2022, entry version 96.
DE RecName: Full=E3 ubiquitin-protein ligase LAP;
DE EC=2.3.2.27;
DE AltName: Full=Leukemia associated protein;
DE Short=LAP;
DE AltName: Full=RING-type E3 ubiquitin transferase LAP {ECO:0000305};
GN OrderedLocusNames=s153R;
OS Rabbit fibroma virus (strain Kasza) (RFV) (Shope fibroma virus (strain
OS Kasza)).
OC Viruses; Varidnaviria; Bamfordvirae; Nucleocytoviricota; Pokkesviricetes;
OC Chitovirales; Poxviridae; Chordopoxvirinae; Leporipoxvirus.
OX NCBI_TaxID=10272;
OH NCBI_TaxID=9986; Oryctolagus cuniculus (Rabbit).
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=10562495; DOI=10.1006/viro.1999.0002;
RA Willer D.O., McFadden G., Evans D.H.;
RT "The complete genome sequence of shope (Rabbit) fibroma virus.";
RL Virology 264:319-343(1999).
CC -!- FUNCTION: E3 ubiquitin-protein ligase which promotes ubiquitination and
CC subsequent degradation of host MHC-I and CD4 molecules, presumably to
CC prevent lysis of infected cells by cytotoxic T-lymphocytes and NK cell.
CC Binds target molecules through transmembrane interaction. The result of
CC this ubiquitination is the enhancement of the endocytosis of the target
CC chain and the delivery to the lysosome, where it is proteolytically
CC destroyed. {ECO:0000250}.
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 -!- SUBCELLULAR LOCATION: Host membrane {ECO:0000305}; Multi-pass membrane
CC protein {ECO:0000305}. Host Golgi apparatus, host trans-Golgi network
CC membrane. Host early endosome membrane {ECO:0000250}.
CC -!- DOMAIN: The RING-CH-type zinc finger domain is required for E3 ligase
CC activity. {ECO:0000255|PROSITE-ProRule:PRU00623}.
CC -!- SIMILARITY: Belongs to the poxviridae LAP protein family.
CC {ECO:0000305}.
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DR EMBL; AF170722; AAF18029.1; -; Genomic_DNA.
DR RefSeq; NP_052036.1; NC_001266.1.
DR GeneID; 1486990; -.
DR KEGG; vg:1486990; -.
DR Proteomes; UP000000868; Genome.
DR GO; GO:0044174; C:host cell endosome; IEA:UniProtKB-KW.
DR GO; GO:0044177; C:host cell Golgi apparatus; IEA:UniProtKB-SubCell.
DR GO; GO:0033644; C:host cell membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0016740; F:transferase activity; IEA:UniProtKB-KW.
DR GO; GO:0008270; F:zinc ion binding; IEA:InterPro.
DR GO; GO:0039648; P:modulation by virus of host protein ubiquitination; IEA:UniProtKB-KW.
DR GO; GO:0046776; P:suppression by virus of host antigen processing and presentation of peptide antigen via MHC class I; IEA:UniProtKB-KW.
DR Gene3D; 3.30.40.10; -; 1.
DR InterPro; IPR011016; Znf_RING-CH.
DR InterPro; IPR013083; Znf_RING/FYVE/PHD.
DR Pfam; PF12906; RINGv; 1.
DR SMART; SM00744; RINGv; 1.
DR PROSITE; PS51292; ZF_RING_CH; 1.
PE 3: Inferred from homology;
KW Host endosome; Host Golgi apparatus; Host membrane; Host-virus interaction;
KW Inhibition of host adaptive immune response by virus;
KW Inhibition of host MHC class I molecule presentation by virus; Membrane;
KW Metal-binding; Modulation of host ubiquitin pathway by viral E3 ligase;
KW Modulation of host ubiquitin pathway by virus; Reference proteome;
KW Transferase; Transmembrane; Transmembrane helix; Ubl conjugation pathway;
KW Viral immunoevasion; Zinc; Zinc-finger.
FT CHAIN 1..201
FT /note="E3 ubiquitin-protein ligase LAP"
FT /id="PRO_0000396002"
FT TOPO_DOM 1..92
FT /note="Cytoplasmic"
FT /evidence="ECO:0000255"
FT TRANSMEM 93..113
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TOPO_DOM 114..123
FT /note="Lumenal"
FT /evidence="ECO:0000255"
FT TRANSMEM 124..144
FT /note="Helical"
FT /evidence="ECO:0000255"
FT TOPO_DOM 145..201
FT /note="Cytoplasmic"
FT /evidence="ECO:0000255"
FT ZN_FING 9..69
FT /note="RING-CH-type"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00623"
FT REGION 168..188
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT COMPBIAS 169..188
FT /note="Acidic residues"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 17
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00623"
FT BINDING 20
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00623"
FT BINDING 31
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00623"
FT BINDING 33
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00623"
FT BINDING 41
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00623"
FT BINDING 44
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00623"
FT BINDING 59
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00623"
FT BINDING 62
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /ligand_label="2"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00623"
SQ SEQUENCE 201 AA; 23122 MW; CE3787624380289B CRC64;
MSTIVDMVDV SLVDKCCWIC KESCDVVRNY CKCRGDNKIV HKECLEEWIN TDTVKNKSCA
ICETPYNVKQ QYKKLTKWRC YRRDCHDSLL VNLPLCLIVG GISTYTLVSV EIIKLMESEE
TSELTKVFLV TSFLGPFIVT VLSALRTCID CRTYFLTTRK RNTIHTLQEL EDDDDDDDDD
DDDDDEEYAD AVEEIIIGPS N
