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 (PubMed:31618756). Recruits mitochondrial HSP70 to drive protein translocation into the matrix using ATP as an energy source (By similarity). Probable component of the PAM complex at least composed of a mitochondrial HSP70 protein, GRPEL1 or GRPEL2, TIMM44, TIMM16/PAM16 and TIMM14/DNAJC19 (By similarity). The complex interacts with the TIMM23 component of the TIM23 complex (PubMed:31618756). Interacts with SLC25A4/ANT1 and SLC25A5/ANT2; leading to inhibit the presequence translocase TIMM23, thereby promoting stabilization of PINK1 (PubMed:31618756). Belongs to the Tim44 family.