Carbonic anhydrases (CA: Carbonate hydrolase; E, C,4.2.1.1) from leaves Vic
ia canencens were purified and were characterized. The purification level o
f enzyme was 76-fold. The optimum temperature of this enzyme was 70 degrees
C. pH optimum was 9.2. Each of the enzyme molecules was a decamer having M
W of 262,000 and the subunit MW was 26,400.