GrpE protein homolog 2, mitochondrial (Grpel2)

Essential component of the PAM complex, a complex required for the translocation of transit peptide-containing proteins in the inner membrane into the mitochondrial matrix in an ATP-dependent manner. Seems to control the nucleotide-dependent binding of mitochondrial HSP70 to substrate proteins.

Stimulates ATPase activity of mt-HSP70. May also serve to modulate the interconversion of oligomeric (inactive) and monomeric (active) forms of mt-HSP70.