Although individual RNAi knockdown of the K07A3.3 gene (encoding a ClpX-like mitochondrial protease) did not affect expression of an Phsp-60::GFP reporter transgene, simulataneous knockdown of both ClpX-like proteases, D2030.2 and K07A3.3, attenuated expression of the Phsp-60::GFP transgene in response to the zc32 mutation.