Function
TMED5 plays a crucial role in vesicular protein trafficking, primarily within the early secretory pathway. It is essential for maintaining Golgi apparatus integrity and participates in protein exchange between Golgi stacks during their assembly. Evidence suggests it is not required for COPI-vesicle-mediated retrograde transport.
Gene References Into Functions
- The luminal alpha-helical domain, but not the GOLD domain, of p24γ2 (a TMED family member) was found necessary for efficient GPI-AP transport. (PMID: 24778190)
- Studies have shown a dose- and time-dependent decrease in cgi-100 (a TMED5 homolog) mRNA expression in K562 cells treated with matrine. Conversely, cgi-100 overexpression increased K562 cell proliferation and immaturity. (PMID: 18549622)
Protein Families
EMP24/GP25L family
Subcellular Location
Endoplasmic reticulum membrane; Single-pass type I membrane protein. Golgi apparatus, cis-Golgi network membrane; Single-pass type I membrane protein. Endoplasmic reticulum-Golgi intermediate compartment membrane; Single-pass type I membrane protein. Note=Probably cycles between compartments of the early secretatory pathway.