[Chromatographic study of salivary carbonic anhydrase isoenzymes in rats]

Authors could purify two isoenzymes (designated CA1 and CA2) from the submandibular gland but only one (CA1) from the submandibular saliva by gel filtration and affinity chromatography. They concluded, that CA1 is a high molecular weight (approximately 90 kD) membrane-bound glycoprotein and CA2 is a cytosolic isoenzyme with lower molecular weight (30 kD) comparing to CA1.