YAP1
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Location (UCSC) | Chr 11: 102.11 – 102.23 Mb | Chr 9: 7.93 – 8 Mb | |||||||
PubMed search | [3] | [4] |
View/Edit Human | View/Edit Mouse |
YAP1 (yes-associated protein 1), also known as YAP or YAP65, is a protein that acts as a
Structure
Cloning of the YAP1 gene facilitated the identification of a modular
Function
YAP1 is a transcriptional co-activator
It is reported that several genes are regulated by YAP1, including
YAP/TAZ have also been shown to act as stiffness sensors, regulating mechanotransduction independently of the Hippo signalling cascade.[33]
As YAP and TAZ are transcriptional co-activators, they do not have DNA-binding domains. Instead, when inside the nucleus, they regulate gene expression through TEAD1-4 which are sequence-specific transcription factors that mediate the main transcriptional output of the Hippo pathway.
Regulation
Biochemical
At the biochemical level, YAP is part of and regulated by the Hippo signaling pathway where a kinase cascade results in its “inactivation”, along with that of TAZ. The result of the activation of this pathway is the restriction of YAP/TAZ from entering the cell nucleus.
Mechanotransductive
Additionally, YAP is regulated by mechanical cues such as extracellular matrix (ECM) rigidity, strain,
Clinical significance
Cancer
Dysregulation of YAP/TAZ-mediated transcriptional activity is implicated in the development of abnormal cell growth and hyperactivation of YAP and TAZ has been observed amongst many cancers.[49][52][53] Hence YAP1 represents a potential target for the treatment of cancer.[54]
While YAP has been identified as a proto-oncogene, it can also act as a tumor suppressor depending on cellular context.[55]
As a drug target
The YAP1 oncogene serves as a target for the development of new cancer drugs.[56] Small compounds have been identified that disrupt the YAP1-TEAD complex or block the binding function of WW domains.[57][58] These small molecules represent lead compounds for the development of therapies for cancer patients, who harbor amplified or overexpressed YAP oncogene.
Neuroprotection
The Hippo/YAP signaling pathway may exert
Mutations
Heterozygous loss-of-function mutations in the YAP1 gene have been identified in two families with major eye malformations with or without extra-ocular features such as hearing loss, cleft lip, intellectual disability and renal disease.[60]
External links
- Overview of all the structural information available in the PDB for UniProt: P46937 (Human Transcriptional coactivator YAP1) at the PDBe-KB.
- Overview of all the structural information available in the PDB for UniProt: P46938 (Mouse Transcriptional coactivator YAP1) at the PDBe-KB.
References
- ^ a b c GRCh38: Ensembl release 89: ENSG00000137693 – Ensembl, May 2017
- ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000053110 – Ensembl, May 2017
- ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
- ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
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