Dendrogram based on a comparison of deduced amino acid sequences covering BC domains or BC subunits from ACCases of different organisms using the computer program gcg pileup (47). BC domain sequences were identified showing significant similarity to the primary structure of E. coli BC. The increase in length of the horizontal lines schematically indicates the degree of decreasing similarity. Amino acid sequences of BC domains and BC subunits of ACCases are taken from following organisms: B. napus (32), Arabidopsis thaliana (20), alfalfa (28), wheat (29), maize (31), rat (48), chicken (49), yeast (50), Cyclotella cryptica (51), E. coli BC (52), and tobacco BC (21).