Transmembrane protein 269 (TMEM269)

Transmembrane protein 269 (TMEM269) is a protein encoded by the TMEM269 gene in humans, located at chromosome 1p34.2. It is a membrane protein predicted to contain five transmembrane domains, with the best-supported subcellular localizations being the endoplasmic reticulum and plasma membrane. TMEM269 has two main isoforms: the canonical form is 245 amino acids long and contains regions homologous to phosphatidylserine synthase. Expression of TMEM269 is low and broadly distributed across tissues, except for higher levels in the brain, testis, and kidney. Its predicted post-translational modifications include multiple potential N-myristoylation and O-linked glycosylation sites, which may indicate roles in protein stability and trafficking. Experimental data suggest TMEM269 might be involved in processes regulated by microRNAs and dietary phospholipids, but its specific physiological function remains unclear. While a yeast two-hybrid screen suggested a potential interaction with Fam183b (a protein involved in cilia function), no major protein-protein interaction network or therapeutic relevance has been established. There are no known drugs, biomarkers, or established safety concerns connected to this target. Currently, TMEM269 is not considered a therapeutic target (i.e., enzyme, receptor, transporter, etc.), and its molecular functions, biological roles, and disease relevance remain largely uncharacterized.

Other names

TMEM269transmembrane protein 269