Amino acid composition of two peptides purified from mitochondrial calf liver DNA.

: In this research the amino acidic composition of a peptide fraction from mitochondrial DNA has been determined, using HPLC and the fingerprinting technique. This peptide fraction has been shown to be composed of two sub-fractions with different reactivity to ninhydrin, and thus supplied with several N-substitute groups. The composition of the first fraction is Gln, Glu, Pro, Leu. The second fraction composition is Pro, Glu or Gln, Asp or Asn, Ser.