Substrate selectivity of C-terminal sucrase isomaltase and maltase glucoamylase
نویسندگان
چکیده
منابع مشابه
Direct starch digestion by sucrase-isomaltase and maltase-glucoamylase.
1. Jane J, Chen YY, Lee LF, et al. Effects of amylopectin branch chain length and amylose content on the gelatinization and pasting properties of starch. Cereal Chem 1999;76:629–37. 2. Quezada-Calvillo R, Robayo-Torres CC, Opekum AR, et al. Contribution of mucosal maltase-glucoamylase activities to mouse small intestinal starch alpha-glucogenesis. J Nutr 2007;137:1725–33. 3. Nichols BL, Quezada...
متن کامل[Structure and evolution of mammalian maltase-glucoamylase and sucrase-isomaltase genes].
Maltase-glucoamylase and sucrase-isomaltase are two human glycosidases responsible for starch digestion. We have performed a comparative analysis of their amino acid sequences from several species of mammals and their orthologues from other chordates. This allowed us to determine the evolutionary history of the enzymes. Both glycosidases are paralogues and contain GH31 family catalytic domains....
متن کاملThe maltase-glucoamylase gene: common ancestry to sucrase-isomaltase with complementary starch digestion activities.
Brush-border maltase-glucoamylase (MGA) activity serves as the final step of small intestinal digestion of linear regions of dietary starch to glucose. Brush-border sucrase-isomaltase (SI) activity is complementary, through digestion of branched starch linkages. Here we report the cloning and sequencing of human MGA gene and demonstrate its close evolutionary relationship to SI. The gene is app...
متن کاملClinical aspects and treatment of congenital sucrase-isomaltase deficiency.
30. Chantret I, Lacasa M, Chevalier G, et al. Sequence of the complete cDNA and the 50 structure of the human sucrase-isomaltase gene. Possible homology with a yeast glucoamylase. Biochem J 1992; 285:915–23. 31. Nichols BL, Eldering J, Avery S, et al. Human small intestinal maltaseglucoamylase cDNA cloning. Homology to sucrase-isomaltase. J Biol Chem 1998;273:3076–81. 32. Nichols BL, Avery S, S...
متن کاملTopology and quaternary structure of pro-sucrase/isomaltase and final-form sucrase/isomaltase.
Pig sucrase/isomaltase (EC 3.2.1.48/10) was purified from intestinal microvillar vesicles prepared from animals with and without pancreatic-duct ligation to obtain the single-chain pro form and the proteolytically cleaved final form respectively. The purified enzymes were re-incorporated into phosphatidylcholine vesicles and analysed by electron microscopy after negative staining. The two forms...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section A Foundations and Advances
سال: 2014
ISSN: 2053-2733
DOI: 10.1107/s2053273314091864