Apolipoprotein L4 (APOL4)

Apolipoprotein L (APOL) proteins belong to the high density lipoprotein family, which plays a central role in cholesterol transport. The cholesterol content of membranes is important in cellular processes such as modulating gene transcription and signal transduction both in the adult brain and during neurodevelopment. The 6 APOL genes are clustered on chromosome 22q12.3.APOL4 is a member of the apolipoprotein L family and may play a role in lipid exchange and transport throughout the body, as well as in reverse cholesterol transport from peripheral cells to the liver. Two transcript variants encoding two different isoforms have been found for this gene. Only one of the isoforms appears to be a secreted protein.