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首页> 外文期刊>Journal of bacteriology >Substrate Inhibition of Transglucosyl-Amylase by Maltose
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Substrate Inhibition of Transglucosyl-Amylase by Maltose

机译:麦芽糖晶粒烯基酶的底物抑制

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摘要

Transglucosyl-amylase was inhibited by maltose when maltose served as a substrate. As a function of substrate concentration, the rates initially rose proportionately with increases of maltose levels until a maximal rate was attained. Further increases of maltose concentration decreased reaction rates. The attainment of a maximal rate with increasing substrate concentration and close correspondence between experimental and calculated rates indicated the involvement of ternary complex formation. Evidence also suggested that substrate inhibition is caused by maltose competing with water for the acceptor sites during complex formation.
机译:当麦芽糖用作基质时,麦芽糖抑制晶胞糖基淀粉酶。作为底物浓度的函数,速率最初随着麦芽糖水平的增加而比例成比例地升高,直至获得最大速率。进一步增加麦芽糖浓度降低了反应率。通过增加底物浓度和实验和计算率之间的密切对应的最大速率表明三元复合物形成的累积。证据还提出,底物抑制是由麦芽糖与受体位点竞争的麦芽糖在复杂的形成期间引起的。

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