| Modification Notes |
CMTM8 (CKLF-like MARVEL transmembrane domain containing 8), also known as CKLFSF8 (chemokine-like factor superfamily member 8), is a 173 amino acid member of the chemokine-like factor family. Members of the chemokine-like factor family share similarity with the chemokine and the transmembrane 4 superfamilies. CMTM8 is a multi-pass membrane protein containing one MARVEL domain. MARVEL domain-containing proteins are usually associated with specialized membrane microdomains. Through these specialized membrane microdomains, MARVEL proteins can influence a variety of cellular processes (ie., vesicular transport carriers or tight junction regulation). CMTM8 is thought to effect ligand-induced clearance of EGFR from cell membranes. This decrease in EGFR signal leads to caspase-dependent and -independent apoptosis. An alternate splice variant that does not contain the entire full-length MARVEL domain, CMTM8-v2, can still induce apoptosis without internalizing the EGFR. CMTM8 is predominantly expressed in liver and pancreas. Human CMTM8 shares 92% similarity with its mouse homolog. |