Mitochondrial solute transporter which transports branched- chain amino acid (BCAA; valine, leucine and isoleucine) into mitochondria in brown adipose tissue (BAT) (By similarity). BAT is involved in BCAA catabolism and actively utilizes BCAA in the mitochondria for thermogenesis (PubMed:31435015). . This is the function of Ensembl gene identifier ENSG00000160785 (SLC25A44, solute carrier family 25 member 44).