PMID: 40789Jan 1, 1979

Studies on isoamyalse formation in biological fluids

Enzyme
K Lorentz, B Flatter

Abstract

Storage of human serum, saliva and duodenal secretion transformed amylase fractions on cellulose acetate membranes into more anionic forms. Incubation with lectins, proteases, glucosidases, neuraminidase and some effectors did not modify this conversion, which was promoted by rising temperature and pH values. Increasing concentrations of ammonium ions delayed the transformation of amylolytic fractions, thus indicating nonenzymatic deamidation as the reason for isoamylase development. A change of molecular weight could be excluded.

References

Jan 1, 1985·Critical Reviews in Clinical Laboratory Sciences·J J Zakowski, D E Bruns
Sep 1, 1985·Scandinavian Journal of Gastroenterology·J KjaergaardV G Nielsen

Related Concepts

Electrophoresis, Cellulose Acetate
Pancreatic Juice
Amylases
Saliva
Intestinal Secretions
Hydrogen-Ion Concentration
Maxilase
Alloenzymes

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