Adrenodoxin, mitochondrial; Participates in the synthesis of thyroid hormones. Essential for the synthesis of various steroid hormones, participates in the reduction of mitochondrial cytochrome P450 for steroidogenesis. Transfers electrons from adrenodoxin reductase to CYP11A1, a cytochrome P450 that catalyzes cholesterol side-chain cleavage; Belongs to the adrenodoxin/putidaredoxin family (184 aa)

STARD3 N-terminal-like protein; Tethering protein that creates contact site between the endoplasmic reticulum and late endosomes- localizes to late endosome membranes and contacts the endoplasmic reticulum via interaction with VAPA and VAPB; Belongs to the STARD3 family (234 aa)

NADPH-adrenodoxin oxidoreductase, mitochondrial; Serves as the first electron transfer protein in all the mitochondrial P450 systems. Including cholesterol side chain cleavage in all steroidogenic tissues, steroid 11-beta hydroxylation in the adrenal cortex, 25-OH-vitamin D3-24 hydroxylation in the kidney, and sterol C-27 hydroxylation in the liver; Belongs to the ferredoxin--NADP reductase type 1 family (534 aa)

Voltage-dependent anion-selective channel protein 1; Forms a channel through the mitochondrial outer membrane and also the plasma membrane. The channel at the outer mitochondrial membrane allows diffusion of small hydrophilic molecules; in the plasma membrane it is involved in cell volume regulation and apoptosis. It adopts an open conformation at low or zero membrane potential and a closed conformation at potentials above 30-40 mV. The open state has a weak anion selectivity whereas the closed state is cation-selective. May participate in the formation of the permeability transition p [...] (283 aa)

StAR-related lipid transfer protein 4; May be involved in the intracellular transport of sterols or other lipids. May bind cholesterol or other sterols (By similarity); StAR related lipid transfer domain containing (205 aa)

Voltage-dependent anion-selective channel protein 2; Forms a channel through the mitochondrial outer membrane that allows diffusion of small hydrophilic molecules. The channel adopts an open conformation at low or zero membrane potential and a closed conformation at potentials above 30-40 mV. The open state has a weak anion selectivity whereas the closed state is cation- selective; Belongs to the eukaryotic mitochondrial porin family (309 aa)

StAR-related lipid transfer protein 6; May be involved in the intracellular transport of sterols or other lipids. May bind cholesterol or other sterols (By similarity); StAR related lipid transfer domain containing (220 aa)

StAR-related lipid transfer protein 3; Sterol-binding protein that mediates cholesterol transport from the endoplasmic reticulum to endosomes. Creates contact site between the endoplasmic reticulum and late endosomes- localizes to late endosome membranes and contacts the endoplasmic reticulum via interaction with VAPA and VAPB. Acts as a lipid transfer protein that redirects sterol to the endosome at the expense of the cell membrane and favors membrane formation inside endosomes. May also mediate cholesterol transport between other membranes, such as mitochondria membrane or cell membr [...] (445 aa)