Monocyte to macrophage differentiation-associated 2 (MMD2)

Monocyte to macrophage differentiation-associated 2 (MMD2), also known as PAQR10, is a membrane protein of the progestin and adipoQ receptor family characterized by seven transmembrane domains and evolutionary conservation with hemolysin-like bacterial proteins. It is localized to the Golgi apparatus and acts as a modulator of Ras signaling, most notably stimulating ERK phosphorylation and the differentiation of cells such as PC12 in response to Ras pathway activation. Functional genomic studies implicate MMD2 in macrophage differentiation, immune system regulation, and disease susceptibility—particularly in chronic inflammatory conditions like Crohn's disease. Other members of the PAQR family are important in metabolic and sex steroid signaling, but MMD2/PAQR10 are distinctive for their role in Golgi-localized control of Ras activity. Research into therapeutic modulation of MMD2 is ongoing, with its function linked to pathways central to immunity, cell growth, and the development of malignancy.

Other names

PAQR10Monocyte to macrophage differentiation factor 2Progestin and adipoQ receptor family member 10Monocyte-to-macrophage differentiation-associated protein 2

Drugs would potentially act by modulating Ras signaling in the Golgi apparatus—either through interaction with MMD2/PAQR10’s seven-transmembrane domains or altering its interaction with Ras or RasGRP1.