木聚糖酶TAXI型抑制蛋白的研究进展

木聚糖酶是一种重要的半纤维素酶,广泛用于饲料工业。近年来在小麦中发现一类能抑制木聚糖酶活性的蛋白,这类抑制蛋白可能会对木聚糖酶的应用效果产生影响。目前发现在不同的谷物中共存在2种类型的木聚糖酶抑制蛋白,根据其结构的不同,分为TAXI型(triticum aestivum xylanase inhibitor)和XIP型(xylanase inhibi-tor protein)。本文主要简述了TAXI型抑制蛋白的分子结构、抑制特性和活性影响因素等方面的研究进展,对于深入研究木聚糖酶及其活性影响因子,充分开发利用我国饲料资源和促进畜牧业生产可持续发展具有重要现实意义。

Research Advances in TAXI-type Endoxylanase Inhibitors

Endoxylanases play important roles in an increasing number of biotechnological applications,such as feed,food,and paper and pulp production industry.A novel class of cereal proteins that inhibit endoxylanases have been discovered,which may affect the applications of endoxylanase.Two structurally different cereal endoxylanase inhibitors are documented in the literatures,namely the TAXI(triticum aestivum xylanase inhibitor)-type and XIP(xylanase inhibiting protein)-type endoxylanase inhibitors.This paper focuses on the TAXI-type endoxylanase inhibitors in the molecular structural and inhibitory properties.It will present great practical significance for extensive study on xylanase activity and the factors whose effects on the activity,exploiting feedstuff resource in our country and promoting sustained stockbreeding development.Chinese Journal of Animal Nutrition,2006,18(Suppl):323-328]