Plant Nucleases: V. Survey of Corn Ribonuclease II Isoenzymes.
Corn (Zea mays L.) ribonuclease II of the root microsomal fraction was isolated from 11 inbreds and seven hybrids. Polyacrylamide gel electrophoresis revealed a total of five bands of activity among corn lines tested. Most inbreds had only one isoenzyme, but three had two isoenzymes. The hybrids tested contained all of the isoenzymes found in the parental inbreds.
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United States Department of Agriculture, Agricultural Research Service, North Central Region, Department of Agronomy, University of Illinois, Urbana, Illinois 61801.