Transmembrane Emp24 Domain-Containing Protein 2 (TMED2) Antibody

Background

TMED2, a member of the p24 family, functions as a cargo receptor and vesicle trafficking regulator in the early secretory pathway, mediating protein transport between the ER, ER-Golgi intermediate compartment (ERGIC), and Golgi apparatus. It is a key component of the COPII vesicle coat complex, where it assists in the selective packaging and transport of secretory and membrane proteins. TMED2 also regulates the recycling of vesicles back to the ER through interactions with the COPI coat complex, ensuring efficient cargo flow and ER-Golgi communication. It is highly expressed in tissues with active protein secretion and participates in processes such as receptor trafficking, organelle integrity, and cellular homeostasis. Dysregulation of TMED2 has been implicated in developmental defects, metabolic diseases, and cancers, where altered protein sorting disrupts cellular signaling and growth. Knockdown studies show impaired vesicle transport, disrupted Golgi architecture, and ER stress, highlighting its critical role in maintaining vesicular trafficking, protein quality control, and cellular function.