CKLF like MARVEL transmembrane domain-containing 6 (i.e. CMTM6), previously termed chemokine-like factor superfamily 6 (i.e. CKLFSF6), is a transmembrane protein encoded in humans by the CMTM6 gene (also termed the CKLFSF6, PRO2219, ayoube, or gourari gene). This gene is located in band 22.3 on the short (or "p") arm of chromosome 3. CMTM6 protein belongs to the CKLF-like MARVEL transmembrane domain-containing family of proteins. This family consist of 9 member proteins: CKLF and CMTM1 through CMTM8. The CMTM family proteins are involved in autoimmune diseases, cardiovascular diseases, the male reproductive system, haematopoiesis, and cancer development. CMTM6 protein regulates immune responses to normal and abnormal (particularly cancerous) cells.
Background References
1. Xing F et al. CMTM6 overexpression confers trastuzumab resistance in HER2-positive breast cancer. Mol Cancer. 2023 Jan
2. Liu Q et al. CMTM6 promotes hepatocellular carcinoma progression through stabilizing beta-catenin. Cancer Lett. 2024 Feb
Subcellular Location
Cell membrane, Early endosome membrane, Recycling endosome membrane.
Western blot analysis of CMTM6 on different lysates with Rabbit anti-CMTM6 antibody (HA723702) at 1/5,000 dilution.
Lane 1: HDLM-2 cell lysate Lane 2: 293T cell lysate Lane 3: MDA-MB-231 cell lysate Lane 4: BxPC-3 cell lysate Lane 5: Raji cell lysate Lane 6: COS-1 cell lysate
Lysates/proteins at 20 µg/Lane.
Predicted band size: 20 kDa Observed band size: 20 kDa
Exposure time: 59 seconds; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA723702) at 1/5,000 dilution was used in primary antibody dilution (K1803) at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
CMTM6 was immunoprecipitated from 0.2 mg MDA-MB-231 cell lysate with HA723702 at 2 µg/10 µl beads. Western blot was performed from the immunoprecipitate using HA723702 at 1/5,000 dilution. HRP Conjugated Anti-Rabbit IgG for IP Nano-secondary antibody at 1/5,000 dilution was used for 1 hour at room temperature.
Lane 1: MDA-MB-231 cell lysate (input) Lane 2: HA723702 IP in MDA-MB-231 cell lysate Lane 3: Rabbit IgG instead of HA723702 in MDA-MB-231 cell lysate