The function of TIMM44 (translocase of inner mitochondrial membrane 44, Ensembl gene identifier ENSG00000104980) is as follows. Essential component of the PAM complex, a complex required for the translocation of transit peptide-containing proteins from the inner membrane into the mitochondrial matrix in an ATP-dependent manner (By similarity). Recruits mitochondrial HSP70 to drive protein translocation into the matrix using ATP as an energy source (By similarity). {ECO:0000250|UniProtKB:O35857, ECO:0000250|UniProtKB:Q01852}.