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Identification and Manipulation of Subsite Structure and Starch Granule Binding Site in Plant α-Amylase
α-amylase subsite starch granule
2008/4/20
In germinating plant seeds, α-amylases degrade starch accumulated in seeds, and that requires two functions: catalysis itself and starch granule binding ability. All plant α-amylases belong to the α-a...
Improvement of the Thermal Stability of a Calcium-free, Alkaline α-Amylase by Site-directed Mutagenesis
Bacillus alkaliphile α-amylase thermostability site-directed mutagenesis
2008/4/20
Alkaline α-amylase from Bacillus sp. strain KSM-K38 (AmyK38) is a calcium-free enzyme that is stable against chelating and oxidative reagents. Recently, the thermostability of this enzyme was improved...
Creation of a Novel Hydrolase by Site-directed Mutagenesis of Malto-oligosyltrehalose Synthase
trehalose malto-oligosyltrehalose synthase site-directed mutagenesis transglycosylation hydrolysis
2008/4/20
Malto-oligosyltrehalose synthase (EC 5.4.99.15, MTSase) catalyzes the conversion of α-1,4-glucan to glycosyltrehalose by forming an α,α-1,1-glucosidic linkage on the reducing side of the α-1,4-glucan....
Engineering Thermus Maltogenic Amylase with Improved Thermostability: Probing the Role of the Conserved Calcium Binding Site in Cyclodextrin-degrading Enzymes
calcium binding site cyclodextrin-degrading enzymes mutagenesis thermostability Thermus maltogenic amylase
2008/4/20
Thermus maltogenic amylase (ThMA), one of the cyclodextrin (CD)-degrading enzymes, is expected to have a calcium-binding site (Ca2 site) based on multiple sequence alignments. In spite of the presumpt...
Site-Directed Mutagenesis of Tryptophan 622 of Thermoactinomyces vulgaris R-47 Glucoamylase:pH Optima and Activities of Five Mutants
glucoamylase optimal pH catalytic base
2008/4/20
In Aspergillus awamori glucoamylase, the optimal pH has been reported to increase to maintain activity by a mutation of Ser411 which forms a hydrogen-bond with a catalytic base (Fang and Ford, Protein...
Presence of a Glycan at a Potential N-Glycosylation Site, Asn-281, of Bovine Lactoferrin
lactoferrin bovine milk N-glycosylation site glycan
2008/4/1
This work was performed to clarify the differences in glycan moieties between multiple molecular mass forms of bovine lactoferrins (bovine lactoferrins-a and -b). After digestion of both bovine lactof...
Characterization by Ionization Mass Spectrometry of Lactosyl ß-Lactoglobulin Conjugates Formed During Heat Treatment of Milk and Whey and Identification of One Lactose-Binding Site
mass spectrometry ß beta -lactoglobulin lactose binding site
2008/3/27
The extent of the early stage of the Maillard-type reaction that impaired functional properties of whey proteins was evaluated by electrospray ionization mass spectrometry. Under conditions of mild he...