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. 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, TIMM44 and TIMM14. The complex interacts with the TIMM23 component of the TIM17:23 complex (By similarity). Expressed in roots, flowers, young cotyledons and leaves. Up-regulated after antimycin A or rotenone treatments. Belongs to the Tim44 family.