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BLOC-1-related complex subunit 5, and related proteins This model includes BLOC-1-related complex subunit 5 (BORCS5), which is also called loss of heterozygosity 12 chromosomal region 1 (LOH12CR1), myristoylated lysosomal protein, or myrlysin. BORCS5 is a component of BLOC-1 related complex (BORC), a multisubunit complex that also contains Lyspersin/C17orf59, Diaskedin/C10orf32, KxDL1, MEF2BNB, BLOS1, BLOS2, and Snapin subunits. BLOC-1 is important for the biogenesis of lysosome-related organelles, and BORC is important for the positioning of the lysosome in the cytoplasm. The BORC complex associates with the lysosomal membrane where it recruits the small GTPase Arl8, which leads in turn to the kinesin-dependent movement of lysosomes toward the plus ends of microtubules in the peripheral cytoplasm. LOH12CR1 may function as a tumor suppressor by inhibiting tumor growth through deregulation of the G1/S checkpoint in human colorectal carcinoma. It has been shown to bind to LKB1, a well-known tumor suppressor gene in colorectal cancer; its expression level could be used as a promising biomarker in patients. This domain has also been found in many hypothetical proteins involved in loss of heterozygosity and thus tumor suppression. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",