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α-淀粉酶、环糊精糖基转移酶和寡聚-1,6-葡萄糖苷酶的平行β/α桶状结构与β-淀粉酶的桶状结构对比：进化距离反映了不相关的序列。

Parallel beta/alpha-barrels of alpha-amylase, cyclodextrin glycosyltransferase and oligo-1,6-glucosidase versus the barrel of beta-amylase: evolutionary distance is a reflection of unrelated sequences.

作者信息

Janecek S

机构信息

Institute of Ecobiology, Slovak Academy of Sciences, Bratislava.

出版信息

FEBS Lett. 1994 Oct 17;353(2):119-23. doi: 10.1016/0014-5793(94)01019-6.

DOI:10.1016/0014-5793(94)01019-6
PMID:7926034
Abstract

The structures of functionally related beta/alpha-barrel starch hydrolases, alpha-amylase, beta-amylase, cyclodextrin glycosyltransferase and oligo-1,6-glucosidase, are discussed, their mutual sequence similarities being emphasized. Since these enzymes (except for beta-amylase) along with the predicted set of more than ten beta/alpha-barrels from the alpha-amylase enzyme superfamily fulfil the criteria characteristic of the products of divergent evolution, their unrooted distance tree is presented.

摘要

本文讨论了功能相关的β/α-桶状淀粉水解酶、α-淀粉酶、β-淀粉酶、环糊精糖基转移酶和寡聚-1,6-葡萄糖苷酶的结构，并着重强调了它们之间的序列相似性。由于这些酶（β-淀粉酶除外）以及α-淀粉酶酶超家族中预测的十多种β/α-桶状酶符合趋异进化产物的特征标准，因此给出了它们的无根距离树。

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