Reviewed
Homo Sapiens (Human) [TaxID: 9606]
E7
Protein E7
Human Papillomavirus Type 31
Viruses> DsDNA Viruses> No RNA Stage> Papillomaviridae> Alphapapillomavirus> Alphapapillomavirus 9> Human Papillomavirus Type 31
Not Available
Various pathway(s) in which protein is involved
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MRGETPTLQDYVLDLQPEATDLHCYEQLPDSSDEEDVIDSPAGQAEPDTSNYNIVTFCCQCKSTLRLCVQSTQVDIRILQELLMGSFGIVCPNCSTRL
98
Not Available
Not Available
01-08-1990
Evidence at protein level
| Amino Acid | Count | % Frequency | Amino Acid | Count | % Frequency |
|---|---|---|---|---|---|
| Alanine (A) | Leucine (L) | ||||
| Arginine (R) | Lysine (K) | ||||
| Asparagine (N) | Methionine (M) | ||||
| Aspartic Acid (D) | Phenylalanine (F) | ||||
| Cysteine (C) | Proline (P) | ||||
| Glutamine (Q) | Serine (S) | ||||
| Glutamic Acid (E) | Threonine (T) | ||||
| Glycine (G) | Tryptophan (W) | ||||
| Histidine (H) | Tyrosine (Y) | ||||
| Isoleucine (I) | Valine (V) |
| % Number of Residues in Helices | % Number of Residues in Strands | % Number of Residues in Coils |
|---|---|---|
♦E7 protein has both transforming and trans-activating activities. Disrupts the function of host retinoblastoma protein RB1/pRb, which is a key regulator of the cell cycle. Induces the disassembly of the E2F1 transcription factors from RB1, with subsequent transcriptional activation of E2F1-regulated S-phase genes. Inactivation of the ability of RB1 to arrest the cell cycle is critical for cellular transformation, uncontrolled cellular growth and proliferation induced by viral infection. Stimulation of progression from G1 to S phase allows the virus to efficiently use the cellular DNA replicating machinery to achieve viral genome replication. Interferes with histone deacetylation mediated by HDAC1 and HDAC2, leading to activation of transcription.
♦ Plays a role in viral genome replication by driving entry of quiescent cells into the cell cycle. Stimulation of progression from G1 to S phase allows the virus to efficiently use the cellular DNA replicating machinery to achieve viral genome replication. E7 protein has both transforming and trans-activating activities. Induces the disassembly of the E2F1 transcription factor from RB1, with subsequent transcriptional activation of E2F1-regulated S-phase genes. Interferes with host histone deacetylation mediated by HDAC1 and HDAC2, leading to transcription activation. Plays also a role in the inhibition of both antiviral and antiproliferative functions of host interferon alpha. Interaction with host TMEM173/STING impairs the ability of TMEM173/STING to sense cytosolic DNA and promote the production of type I interferon (IFN-alpha and IFN-beta).
♦ Plays a role in viral genome replication by driving entry of quiescent cells into the cell cycle. Stimulation of progression from G1 to S phase allows the virus to efficiently use the cellular DNA replicating machinery to achieve viral genome replication. E7 protein has both transforming and trans-activating activities. Induces the disassembly of the E2F1 transcription factor from RB1, with subsequent transcriptional activation of E2F1-regulated S-phase genes. Interferes with host histone deacetylation mediated by HDAC1 and HDAC2, leading to transcription activation. Plays also a role in the inhibition of both antiviral and antiproliferative functions of host interferon alpha. Interaction with host TMEM173/STING impairs the ability of TMEM173/STING to sense cytosolic DNA and promote the production of type I interferon (IFN-alpha and IFN-beta).
Not Available
GO:0003677 ; GO:0003700 ; GO:0006351 ; GO:0030430 ; GO:0039502 ;
GO:0039645 ; GO:0042025 ; GO:0046872
GO:0039645 ; GO:0042025 ; GO:0046872
Host cytoplasm . Host nucleus . Note=Predominantly found in the host nucleus. .
Not Available
MOTIF 22 26 LXCXE motif; interaction with host RB1 and TMEM173/STING. ; MOTIF 76 84 Nuclear export signal.
Predicted/Modelled
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Protein couldn't be modeled using I-Tasser and Raptor X because of length constraints of the software.
Not Available
- Million Molecules
Best 20 Hit molecules
Not Available