The Effects of Serum Albumin and Related Amino Acids on Pancreatic Lipase and Bile Salts Inhibited Microbial Lipases.
The activities of microbial lipases were inhibited by bile salts in a non-emulsifying assay system. To protect lipase activities from inactivation, the effects of proteins and amino acids were investigated. Bovine serum albumin (BSA) and α-lactalbumin (α-LA) stored the bile salts inhibited microbial lipases. Among N-end amino groups contained in BSA, L-histidine restored the activities of the bile salts inhibited microbial lipases. On the other hand, pancreatic lipase activity was stimulated by not only BSA, but L-histidine and L-aspartic acid as N-end amino groups of BSA and additionally accelerated it in combination with bile salts.
a Amano Pharmaceutical Co., Ltd., Nishishiroyashiki-51 , Kunotsubo, Nishiharu-cho , Nishikasugai-gun, Aichi 481 , Japan.
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a Amano Pharmaceutical Co., Ltd., Nishishiroyashiki-51 , Kunotsubo, Nishiharu-cho , Nishikasugai-gun, Aichi 481 , Japan.|b Hirosaki University School of Medicine , 5 Zaifu-cho, Hirosaki 036 , Japan.
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Nakamura