Modulator of apoptosis 1 (MOAP1)

Modulator of apoptosis 1 (MOAP1) is a pro-apoptotic protein and a member of the PNMA gene family, functioning as a key mediator of mitochondrial and death receptor-mediated apoptosis[1][3][4]. MOAP1 contains a BH3-like domain and interacts directly with the Bcl-2 family member BAX to trigger conformational changes required for cytochrome c release from mitochondria and subsequent activation of the intrinsic apoptotic pathway[1][2][3][4]. MOAP1 levels are tightly regulated by ubiquitin-mediated proteasomal degradation, and its stabilization sensitizes cells to apoptotic stimuli. It also forms functional complexes with tumor suppressor RASSF1A to link external (death receptor) apoptotic signals to mitochondrial cell death machinery[2][3][4]. MOAP1 is implicated in tumor suppression, neuronal cell death, cardiovascular injury, and immune responses. Downregulation or loss of MOAP1 expression is observed in multiple human cancers and may contribute to chemoresistance and tumor progression. There are currently no approved drugs that directly target MOAP1, but it is a mechanistically important node in cell death regulation relevant to oncology and neurodegeneration[1][2][3][4]. Please note that while MOAP1 is highly relevant in disease biology, it is not yet a direct therapeutic target for any approved drugs as of the knowledge cutoff date[1][2][3].

Other names

MOAP1PNMA4MAP-1MAP1Paraneoplastic antigen Ma4paraneoplastic Ma antigen family member 4paraneoplastic antigen like 4

Activation of BAX protein to induce mitochondrial apoptosis; Regulation of apoptosis via RASSF1A/MOAP1 pathway; Inhibition of complement system (via C4BP chimeras in experimental settings)