Plays a key role in steroid hormone synthesis by enhancing the metabolism of cholesterol into pregnenolone. Mediates the transfer of cholesterol from the outer mitochondrial membrane to the inner mitochondrial membrane where it is cleaved to pregnenolone. May interact with TSPO. Expressed in gonads, adrenal cortex and kidney. Note: This description may include information from UniProtKB.
Protein type: Lipid binding protein; Mitochondrial; Carrier protein
Cellular Component: mitochondrial intermembrane space
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.