The partial purification of leaf ribonuclease

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Abstract
From pea seedlings, ribonuclease preparations were made which attack P-containing substrates other than ribonucleic acid so slowly as to make it unlikely that the enzyme has an unspecific action. The enzyme differs from pancreatic ribonuclease in that it hydrolyzes nucleic acid so completely that no acid-precipitable "core" is left. Less thoroughly fractionated preparations were made from tobacco leaves and some properties of the enzyme in other leaves are described.