- A starch-binding domain identified in α-amylase (AmyP) represents a new family of carbohydrate-binding modules that contribute to enzymatic hydrolysis of soluble starch.
A starch-binding domain identified in α-amylase (AmyP) represents a new family of carbohydrate-binding modules that contribute to enzymatic hydrolysis of soluble starch.
FEBS letters (2014-03-13)
Hui Peng, Yunyun Zheng, Maojiao Chen, Ying Wang, Yazhong Xiao, Yi Gao
PMID24613924
要旨
A novel starch-binding domain (SBD) that represents a new carbohydrate-binding module family (CBM69) was identified in the α-amylase (AmyP) of the recently established alpha-amylase subfamily GH13_37. The SBD and its homologues come mostly from marine bacteria, and phylogenetic analysis indicates that they are closely related to the CBM20 and CBM48 families. The SBD exhibited a binding preference toward raw rice starch, but the truncated mutant (AmyPΔSBD) still retained similar substrate preference. Kinetic analyses revealed that the SBD plays an important role in soluble starch hydrolysis because different catalytic efficiencies have been observed in AmyP and the AmyPΔSBD.
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製品内容
Sigma-Aldrich
α-アミラーゼ from human saliva, Type XIII-A, lyophilized powder, 300-1,500 units/mg protein
Sigma-Aldrich
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α-アミラーゼ ブタ膵臓由来, Type I-A, PMSF treated, saline suspension, 700-1400 units/mg protein (E1%/280)
Supelco
デンプン トウモロコシ由来, analytical standard, analytical standard for Starch Assay Kits SA-20 and STA-20