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Inactivation of α-Amylases from Thermoactinomyces vulgaris R-47, TVA I and TVA II, by ω-Epoxyalkyl α-D-Glucopyranoside
α-amylase ω-epoxyalkyl α-D-glucopyranoside affinity labeling Thermoactinomyces vulgaris
2008/4/20
We found here that ω-epoxyalkyl α-D-glucopyranosides consisting of three, four and five alkyl carbons (α-E3G, α-E4G and α-E5G, respectively), which are known to be affinity-labeling reagents of β-amyl...
Mutagenesis and Structural Analysis of Thermoactinomyces vulgaris R-47 α-Amylase II (TVA II)
TVA II subsite substrate recognition α-amylase family
2008/4/20
An α-amylase II (TVA II) produced by Thermoactinomyces vulgaris R-47 exhibits wide substrate specificity for starch, pullulan, cyclodextrins and isopanose. Asp465 and Arg469 are located at subsite (-2...
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...