Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Plant proteins – e.g. – derived from legumes – algae or...
Patent
1987-06-15
1989-02-21
Martinell, James
Chemistry: natural resins or derivatives; peptides or proteins;
Proteins, i.e., more than 100 amino acid residues
Plant proteins, e.g., derived from legumes, algae or...
435 22, 435 68, 514 2, C07K 302, C07K 1510, C12P 2100, C12Q 140
Patent
active
048066265
ABSTRACT:
New .alpha.-amylase inhibitor from wheat (WAI-53). The inhibitor is characterized especially by having molecular weight of 24,000 as determined by gel filtration, giving a single band at an electrophoretic mobility of 0.53 on polyacrylamide gel electrophoresis according to the Davis Disc Electrophoresis Method and producing saturation curves of WAI-53 with human salivary alpha-amylase and with human pancreatic alpha-amylase with a ratio of the amount of WAI-53 required to produce 50% inhibition of human salivary .alpha.-amylase to that of human pancreatic amylase above 1:250. The alpha-amylase inhibitor is used for quantitative analysis of alpha-amylase isozymes in body fluid.
REFERENCES:
O'Donnell et al; Biochim. Biophys. ACTA 422: 159 (1976).
Silano et al, "Inhibition of Amylases from Different Origins by Albumins from the Wheat Kernel", Biochim. Biophys. Acta 391: 170 (1975).
Maeda Koji
Oka Osamu
Martinell James
Nisshin Flour Milling Co. Ltd.
Oriental Yeast Co. Ltd.
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