negatively regulates mitochondrial DNA metabolic process negative regulation of DNA metabolic process biological regulation regulation of mitochondrial DNA metabolic process negative regulation of mitochondrial DNA metabolic process down regulation of mitochondrial DNA metabolism Any process that stops, prevents or reduces the frequency, rate or extent of mitochondrial DNA metabolic process. downregulation of mitochondrial DNA metabolism inhibition of mitochondrial DNA metabolic process downregulation of mtDNA metabolic process down regulation of mtDNA metabolic process negative regulation of mtDNA metabolic process negative regulation of mtDNA metabolism yaf down-regulation of mtDNA metabolic process inhibition of mitochondrial DNA metabolism down-regulation of mtDNA metabolism down regulation of mtDNA metabolism 2013-02-01T10:05:09Z inhibition of mtDNA metabolic process GO:1901859 down-regulation of mitochondrial DNA metabolism down regulation of mitochondrial DNA metabolic process downregulation of mtDNA metabolism down-regulation of mitochondrial DNA metabolic process downregulation of mitochondrial DNA metabolic process negative regulation of mitochondrial DNA metabolism inhibition of mtDNA metabolism biological_process