UniProtKB - P90495 (MIR1_HHV8P)
Protein
E3 ubiquitin-protein ligase MIR1
Gene
K3
Organism
Human herpesvirus 8 type P (isolate GK18) (HHV-8) (Kaposi's sarcoma-associated herpesvirus)
Status
Functioni
E3 ubiquitin-protein ligase which promotes ubiquitination and subsequent degradation of host MHC-I and CD1D molecules, presumably to prevent lysis of infected cells by cytotoxic T-lymphocytes. Binds target molecules through transmembrane interaction. E3 ubiquitin-protein ligases accept ubiquitin from specific E2 ubiquitin-conjugating enzymes, and then transfer it to target protein. The result of this ubiquitination is the enhancement of the endocytosis of the target chain and the delivery to the lysosome, where it is proteolytically destroyed. Induces ubiquitination not only on lysines, but also on cysteine residues.5 Publications
Miscellaneous
Specific for HLA-A, HLA-B, HLA-C and HLA-E alleles.
Catalytic activityi
- S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine + [acceptor protein]-L-lysine = [E2 ubiquitin-conjugating enzyme]-L-cysteine + N(6)-ubiquitinyl-[acceptor protein]-L-lysine. EC:2.3.2.27
: protein ubiquitination Pathwayi
This protein is involved in the pathway protein ubiquitination, which is part of Protein modification.View all proteins of this organism that are known to be involved in the pathway protein ubiquitination and in Protein modification.
Sites
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Metal bindingi | 12 | Zinc | 1 | |
Metal bindingi | 24 | Zinc | 1 | |
Metal bindingi | 26 | Zinc | 1 | |
Metal bindingi | 34 | Zinc | 1 | |
Metal bindingi | 37 | Zinc | 1 | |
Metal bindingi | 50 | Zinc | 1 | |
Metal bindingi | 53 | Zinc | 1 |
Regions
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Zinc fingeri | 1 – 60 | RING-CH-typePROSITE-ProRule annotationAdd BLAST | 60 |
GO - Molecular functioni
- transferase activity Source: UniProtKB-KW
- zinc ion binding Source: InterPro
GO - Biological processi
- endocytosis involved in viral entry into host cell Source: CACAO
- modulation by virus of host protein ubiquitination Source: CACAO
- protein ubiquitination Source: UniProtKB-UniPathway
- suppression by virus of host adaptive immune response Source: CACAO
- suppression by virus of host interferon receptor activity Source: UniProtKB-KW
- suppression by virus of host type I interferon-mediated signaling pathway Source: UniProtKB-KW
- ubiquitin-dependent protein catabolic process Source: CACAO
Keywordsi
Enzyme and pathway databases
BRENDAi | 6.3.2.19, 2803 |
UniPathwayi | UPA00143 |
Names & Taxonomyi
Protein namesi | Recommended name: E3 ubiquitin-protein ligase MIR1 (EC:2.3.2.27)Alternative name(s): IE1B protein Modulator of immune recognition 1 ORF K3 RING-type E3 ubiquitin transferase MIR1Curated |
Gene namesi | Name:K3 |
Organismi | Human herpesvirus 8 type P (isolate GK18) (HHV-8) (Kaposi's sarcoma-associated herpesvirus) |
Taxonomic identifieri | 868565 [NCBI] |
Taxonomic lineagei | Viruses › Duplodnaviria › Heunggongvirae › Peploviricota › Herviviricetes › Herpesvirales › Herpesviridae › Gammaherpesvirinae › Rhadinovirus › |
Virus hosti | Homo sapiens (Human) [TaxID: 9606] |
Proteomesi |
|
Subcellular locationi
- Host cell membrane 1 Publication; Multi-pass membrane protein 1 Publication
- Host endoplasmic reticulum 1 Publication Note: Probably exerts its effects at the plasma membrane during viral infection.
Topology
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Topological domaini | 1 – 82 | CytoplasmicSequence analysisAdd BLAST | 82 | |
Transmembranei | 83 – 103 | HelicalSequence analysisAdd BLAST | 21 | |
Topological domaini | 104 – 121 | ExtracellularSequence analysisAdd BLAST | 18 | |
Transmembranei | 122 – 142 | HelicalSequence analysisAdd BLAST | 21 | |
Topological domaini | 143 – 333 | CytoplasmicSequence analysisAdd BLAST | 191 |
GO - Cellular componenti
- host cell endoplasmic reticulum Source: UniProtKB-SubCell
- host cell plasma membrane Source: UniProtKB-SubCell
- integral component of membrane Source: UniProtKB-KW
Keywords - Cellular componenti
Host cell membrane, Host endoplasmic reticulum, Host membrane, MembranePathology & Biotechi
Mutagenesis
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Mutagenesisi | 41 | W → A: Loss of ubiquitination activity and degradation of class I molecules. 1 Publication | 1 |
PTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
ChainiPRO_0000221389 | 1 – 333 | E3 ubiquitin-protein ligase MIR1Add BLAST | 333 |
Proteomic databases
PRIDEi | P90495 |
Interactioni
Subunit structurei
Binds human MHC-I and CD1D.
CuratedBinary interactionsi
Hide detailsP90495
With | #Exp. | IntAct |
---|---|---|
RIR2 [P88951] from Human herpesvirus 8 type M. | 2 | EBI-6149947,EBI-7923148 |
P88941 from Human herpesvirus 8 type M. | 2 | EBI-6149947,EBI-7922689 |
Protein-protein interaction databases
BioGRIDi | 1776989, 15 interactors |
IntActi | P90495, 16 interactors |
MINTi | P90495 |
Structurei
Secondary structure
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details3D structure databases
SMRi | P90495 |
ModBasei | Search... |
PDBe-KBi | Search... |
Miscellaneous databases
EvolutionaryTracei | P90495 |
Family & Domainsi
Zinc finger
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Zinc fingeri | 1 – 60 | RING-CH-typePROSITE-ProRule annotationAdd BLAST | 60 |
Keywords - Domaini
Transmembrane, Transmembrane helix, Zinc-fingerFamily and domain databases
Gene3Di | 3.30.40.10, 1 hit |
InterProi | View protein in InterPro IPR011016, Znf_RING-CH IPR013083, Znf_RING/FYVE/PHD |
Pfami | View protein in Pfam PF12906, RINGv, 1 hit |
SMARTi | View protein in SMART SM00744, RINGv, 1 hit |
PROSITEi | View protein in PROSITE PS51292, ZF_RING_CH, 1 hit |
i Sequence
Sequence statusi: Complete.
P90495-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MEDEDVPVCW ICNEELGNER FRACGCTGEL ENVHRSCLST WLTISRNTAC
60 70 80 90 100
QICGVVYNTR VVWRPLREMT LLPRLTYQEG LELIVFIFIM TLGAAGLAAA
110 120 130 140 150
TWVWLYIVGG HDPEIDHVAA AAYYVFFVFY QLFVVFGLGA FFHMMRHVGR
160 170 180 190 200
AYAAVNTRVE VFPYRPRPTS PECAVEEIEL QEILPRGDNQ DEEGPAGAAP
210 220 230 240 250
GDQNGPAGAA PGDQDGPADG APVHRDSEES VDEAAGYKEA GEPTHNDGRD
260 270 280 290 300
DNVEPTAVGC DCNNLGAERY RATYCGGYVG AQSGDGAYSV SCHNKAGPSS
310 320 330
LVDILPQGLP GGGYGSMGVI RKRSAVSSAL MFH
Experimental Info
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Sequence conflicti | 195 – 204 | Missing in AAB62674 (Ref. 3) Curated | 10 | |
Sequence conflicti | 195 – 204 | Missing in ABD28858 (PubMed:16760382).Curated | 10 | |
Sequence conflicti | 281 | A → V in AAB62674 (Ref. 3) Curated | 1 | |
Sequence conflicti | 310 | P → L in ABD28858 (PubMed:16760382).Curated | 1 |
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | U75698 Genomic DNA Translation: AAC57091.1 AF307516 mRNA Translation: AAK83788.1 AF307517 mRNA Translation: AAK83789.1 AF307518 mRNA Translation: AAK83790.1 AF307519 mRNA Translation: AAK83791.1 U71365 Genomic DNA Translation: AAC34939.1 U83350 Genomic DNA Translation: AAC56950.1 U93872 Genomic DNA Translation: AAB62674.1 AF148805 Genomic DNA Translation: ABD28858.1 |
RefSeqi | YP_001129360.1, NC_009333.1 |
Genome annotation databases
GeneIDi | 4961486 |
KEGGi | vg:4961486 |
Similar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | U75698 Genomic DNA Translation: AAC57091.1 AF307516 mRNA Translation: AAK83788.1 AF307517 mRNA Translation: AAK83789.1 AF307518 mRNA Translation: AAK83790.1 AF307519 mRNA Translation: AAK83791.1 U71365 Genomic DNA Translation: AAC34939.1 U83350 Genomic DNA Translation: AAC56950.1 U93872 Genomic DNA Translation: AAB62674.1 AF148805 Genomic DNA Translation: ABD28858.1 |
RefSeqi | YP_001129360.1, NC_009333.1 |
3D structure databases
Select the link destinations: PDBei RCSB PDBi PDBji Links Updated | PDB entry | Method | Resolution (Å) | Chain | Positions | PDBsum |
1VYX | NMR | - | A | 1-60 | [»] | |
SMRi | P90495 | |||||
ModBasei | Search... | |||||
PDBe-KBi | Search... |
Protein-protein interaction databases
BioGRIDi | 1776989, 15 interactors |
IntActi | P90495, 16 interactors |
MINTi | P90495 |
Proteomic databases
PRIDEi | P90495 |
Genome annotation databases
GeneIDi | 4961486 |
KEGGi | vg:4961486 |
Enzyme and pathway databases
UniPathwayi | UPA00143 |
BRENDAi | 6.3.2.19, 2803 |
Miscellaneous databases
EvolutionaryTracei | P90495 |
Family and domain databases
Gene3Di | 3.30.40.10, 1 hit |
InterProi | View protein in InterPro IPR011016, Znf_RING-CH IPR013083, Znf_RING/FYVE/PHD |
Pfami | View protein in Pfam PF12906, RINGv, 1 hit |
SMARTi | View protein in SMART SM00744, RINGv, 1 hit |
PROSITEi | View protein in PROSITE PS51292, ZF_RING_CH, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | MIR1_HHV8P | |
Accessioni | P90495Primary (citable) accession number: P90495 Secondary accession number(s): O40920, Q2HRC5 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | September 27, 2005 |
Last sequence update: | May 1, 1997 | |
Last modified: | December 2, 2020 | |
This is version 133 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Viral Protein Annotation Program |
Miscellaneousi
Keywords - Technical termi
3D-structure, Reference proteomeDocuments
- PATHWAY comments
Index of metabolic and biosynthesis pathways - PDB cross-references
Index of Protein Data Bank (PDB) cross-references