Q80966 · Q80966_HPV16
- ProteinProtein E6
- GeneE6
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids151 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
function
Plays a major role in the induction and maintenance of cellular transformation. Acts mainly as an oncoprotein by stimulating the destruction of many host cell key regulatory proteins. E6 associates with host UBE3A/E6-AP ubiquitin-protein ligase, and inactivates tumor suppressors TP53 and TP73 by targeting them to the 26S proteasome for degradation. In turn, DNA damage and chromosomal instabilities increase and lead to cell proliferation and cancer development. The complex E6/E6AP targets several other substrates to degradation via the proteasome including host DLG1 or NFX-91, a repressor of human telomerase reverse transcriptase (hTERT). The resulting increased expression of hTERT prevents the shortening of telomere length leading to cell immortalization. Other cellular targets including BAK1, Fas-associated death domain-containing protein (FADD) and procaspase 8, are degraded by E6/E6AP causing inhibition of apoptosis. E6 also inhibits immune response by interacting with host IRF3 and TYK2. These interactions prevent IRF3 transcriptional activities and inhibit TYK2-mediated JAK-STAT activation by interferon alpha resulting in inhibition of the interferon signaling pathway.
Miscellaneous
Belongs to the high risk human alphapapillomavirus family. The cancer-causing human papillomavirus E6 protein has a unique carboxy terminal PDZ domain containing substrate.
GO annotations
all annotations | all molecular function | virus receptor activity | dna binding | rna binding | cytoskeletal motor activity | catalytic activity | gtpase activity | structural molecule activity | transporter activity | cytoskeletal protein binding | lipid binding | cyclase activity | antioxidant activity | oxidoreductase activity | transferase activity | hydrolase activity | lyase activity | isomerase activity | ligase activity | protein tag activity | cargo receptor activity | histone binding | protein folding chaperone | translation regulator activity | nutrient reservoir activity | receptor ligand activity | molecular transducer activity | molecular adaptor activity | toxin activity | cell adhesion mediator activity | molecular function regulator activity | virus coreceptor activity | catalytic activity, acting on a protein | catalytic activity, acting on dna | catalytic activity, acting on rna | molecular carrier activity | transcription regulator activity | general transcription initiation factor activity | molecular sensor activity | molecular sequestering activity | atp-dependent activity | other molecular function | all biological process | mitotic cell cycle | cytokinesis | cytoplasmic translation | immune system process | muscle system process | circulatory system process | renal system process | respiratory system process | carbohydrate metabolic process | generation of precursor metabolites and energy | dna replication | dna repair | dna recombination | chromatin organization | dna-templated transcription | regulation of dna-templated transcription | trna metabolic process | protein folding | protein glycosylation | amino acid metabolic process | modified amino acid metabolic process | lipid metabolic process | vitamin metabolic process | sulfur compound metabolic process | intracellular protein transport | nucleocytoplasmic transport | autophagy | inflammatory response | mitochondrion organization | cytoskeleton organization | microtubule-based movement | peroxisome organization | lysosome organization | chromosome segregation | cell adhesion | establishment or maintenance of cell polarity | programmed cell death | photosynthesis | mrna metabolic process | snrna metabolic process | vesicle-mediated transport | reproductive process | digestive system process | signaling | cell differentiation | protein catabolic process | extracellular matrix organization | regulatory ncrna-mediated gene silencing | telomere organization | cell junction organization | wound healing | ribosome biogenesis | cilium organization | anatomical structure development | cell motility | nervous system process | endocrine process | protein maturation | transmembrane transport | nucleobase-containing small molecule metabolic process | hepaticobiliary system process | membrane organization | protein-containing complex assembly | cell wall organization or biogenesis | nitrogen cycle metabolic process | protein localization to plasma membrane | defense response to other organism | detoxification | meiotic nuclear division | mitotic nuclear division | mitochondrial gene expression | carbohydrate derivative metabolic process | other biological process | all cellular component | nuclear chromosome | extracellular region | extracellular space | cell wall | nucleus | nuclear envelope | nucleoplasm | chromosome | nucleolus | mitochondrion | lysosome | endosome | vacuole | peroxisome | endoplasmic reticulum | golgi apparatus | lipid droplet | microtubule organizing center | cytosol | ribosome | cytoskeleton | plasma membrane | cilium | plastid | thylakoid | external encapsulating structure | extracellular matrix | cytoplasmic vesicle | organelle | other cellular component | |||
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Aspect | Term | |
---|---|---|
Cellular Component | host cell cytoplasm | |
Cellular Component | host cell nucleus | |
Molecular Function | DNA binding | |
Molecular Function | metal ion binding | |
Molecular Function | PDZ domain binding | |
Biological Process | DNA-templated transcription | |
Biological Process | regulation of DNA-templated transcription | |
Biological Process | symbiont-mediated perturbation of host apoptosis | |
Biological Process | symbiont-mediated perturbation of host ubiquitin-like protein modification | |
Biological Process | symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IRF3 activity | |
Biological Process | symbiont-mediated suppression of host type I interferon-mediated signaling pathway | |
Biological Process | virus-mediated perturbation of host defense response |
Keywords
- Molecular function
- Biological process
- Ligand
Names & Taxonomy
Protein names
- Recommended nameProtein E6
Gene names
Organism names
- Organism
- Strains
- Taxonomic lineageViruses > Monodnaviria > Shotokuvirae > Cossaviricota > Papovaviricetes > Zurhausenvirales > Papillomaviridae > Firstpapillomavirinae > Alphapapillomavirus > Alphapapillomavirus 9
- Virus hosts
Accessions
- Primary accessionQ80966
- Secondary accessions
Subcellular Location
Expression
Keywords
- Developmental stage
Interaction
Subunit
Forms homodimers. Interacts with ubiquitin-protein ligase UBE3A/E6-AP and thus forms a complex with human TP53. Interacts with human NFX1 and MAGI3. Interacts with human IRF3; this interaction inhibits the establishment of antiviral state. Interacts with human TYK2; this interaction inhibits JAK-STAT activation by interferon alpha. Interacts with host DLG1; this interaction leads to the proteasomal degradation of DLG1.
Family & Domains
Features
Showing features for zinc finger, motif.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Zinc finger | 30-66 | |||||
Sequence: CVYCKQQLLRREVYDFAFRDLCIVYRDGNPYAVCDKC | ||||||
Zinc finger | 103-139 | |||||
Sequence: CINCQKPLCPEEKQRHLDKKQRFHNIRGRWTGRCMSC | ||||||
Motif | 149-151 | PDZ-binding domain | ||||
Sequence: TQL |
Sequence similarities
Belongs to the papillomaviridae E6 protein family.
Keywords
- Domain
Family and domain databases
Sequence
- Sequence statusComplete
- Length151
- Mass (Da)18,292
- Last updated1996-11-01 v1
- Checksum35012A9E01993C35
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
AF003013 EMBL· GenBank· DDBJ | AAB70730.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
AF003014 EMBL· GenBank· DDBJ | AAB70731.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
AF003017 EMBL· GenBank· DDBJ | AAB70734.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466534 EMBL· GenBank· DDBJ | AGS45283.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466535 EMBL· GenBank· DDBJ | AGS45284.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466536 EMBL· GenBank· DDBJ | AGS45285.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466537 EMBL· GenBank· DDBJ | AGS45286.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466538 EMBL· GenBank· DDBJ | AGS45287.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466539 EMBL· GenBank· DDBJ | AGS45288.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466540 EMBL· GenBank· DDBJ | AGS45289.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466541 EMBL· GenBank· DDBJ | AGS45290.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466542 EMBL· GenBank· DDBJ | AGS45291.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466543 EMBL· GenBank· DDBJ | AGS45292.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466544 EMBL· GenBank· DDBJ | AGS45293.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466545 EMBL· GenBank· DDBJ | AGS45294.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466546 EMBL· GenBank· DDBJ | AGS45295.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466547 EMBL· GenBank· DDBJ | AGS45296.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466548 EMBL· GenBank· DDBJ | AGS45297.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466549 EMBL· GenBank· DDBJ | AGS45298.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466550 EMBL· GenBank· DDBJ | AGS45299.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466551 EMBL· GenBank· DDBJ | AGS45300.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466552 EMBL· GenBank· DDBJ | AGS45301.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466554 EMBL· GenBank· DDBJ | AGS45303.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466555 EMBL· GenBank· DDBJ | AGS45304.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466556 EMBL· GenBank· DDBJ | AGS45305.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466557 EMBL· GenBank· DDBJ | AGS45306.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466558 EMBL· GenBank· DDBJ | AGS45307.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466559 EMBL· GenBank· DDBJ | AGS45308.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466560 EMBL· GenBank· DDBJ | AGS45309.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466561 EMBL· GenBank· DDBJ | AGS45310.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466562 EMBL· GenBank· DDBJ | AGS45311.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466563 EMBL· GenBank· DDBJ | AGS45312.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466564 EMBL· GenBank· DDBJ | AGS45313.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466565 EMBL· GenBank· DDBJ | AGS45314.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466566 EMBL· GenBank· DDBJ | AGS45315.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466567 EMBL· GenBank· DDBJ | AGS45316.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466568 EMBL· GenBank· DDBJ | AGS45317.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466569 EMBL· GenBank· DDBJ | AGS45318.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466570 EMBL· GenBank· DDBJ | AGS45319.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466571 EMBL· GenBank· DDBJ | AGS45320.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466572 EMBL· GenBank· DDBJ | AGS45321.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466573 EMBL· GenBank· DDBJ | AGS45322.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466574 EMBL· GenBank· DDBJ | AGS45323.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466575 EMBL· GenBank· DDBJ | AGS45324.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466576 EMBL· GenBank· DDBJ | AGS45325.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466577 EMBL· GenBank· DDBJ | AGS45326.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466578 EMBL· GenBank· DDBJ | AGS45327.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KF466653 EMBL· GenBank· DDBJ | AGS45402.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KP313769 EMBL· GenBank· DDBJ | AKI85227.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
KP677553 EMBL· GenBank· DDBJ | AKN79011.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
AJ388068 EMBL· GenBank· DDBJ | CAB45128.1 EMBL· GenBank· DDBJ | Genomic DNA |