Chloroplast and Cytoplasmic Enzymes

Abstract
Pea [Pisum-sativum] leaf chloroplast aldolase [EC 4.1.2.7] contains 7 more aspartyl (asx) residues and 4 fewer leucine and isoleucine residues than the cytoplasmic enzyme. The 2 forms are therefore primary isoenzymes, differing in amino acid sequence.