The f2a1 histone was isolated from calf thymus nuclei which had been incubated in the presence of sodium acetate-1-14C. Following digestion of the histone with trypsin and Pronase, the peptides and amino acids were fractionated by exclusion chromatography and ion exchange chromatography. All of the radioactivity of the 14C-acetate-labeled f2a1 histone was recovered in one peak which was identified as e-N-acetyllysine.
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Gershey et al. (1968) studied this question.
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