NDLI: Proteinaceous inhibitors of microbial xylanases

Content Provider	Springer Nature Link
Author	Gusakov, A. V.
Copyright Year	2010
Abstract	At the end of 1990s two structurally different proteinaceous inhibitors of xylanases were discovered in the grain of wheat (Triticum aestivum). They were named TAXI (T. aestivum xylanase inhibitor) and XIP (xylanase-inhibiting protein). Later it was shown that TAXI and XIP in wheat are present in several isoforms encoded by different genes. TAXI- and XIP-like inhibitors have also been found in other cereals-barley, rye, rice, maize, etc. All these proteins can specifically inhibit activity of fungal and bacterial xylanases belonging to families 10 and 11 of glycoside hydrolases, but they do not affect endogenous enzymes produced by plants. A common viewpoint is that the presence of proteinaceous inhibitors in cereals is a response of plants to pathogenic attack by microorganisms. A few years ago, an inhibitor of a third type was discovered in wheat. It was named TLXI (thaumatin-like xylanase inhibitor) because of its similarity to the thaumatin family of plant proteins. In this review, the occurrence of proteinaceous inhibitors of xylanases in different cereals, their specificity towards fungal and bacterial enzymes, as well as structural features responsible for enzyme sensitivity to various types of inhibitors are discussed.
Starting Page	1185
Ending Page	1199
Page Count	15
File Format	PDF
ISSN	00062979
Journal	Biochemistry (Moscow)
Volume Number	75
Issue Number	10
e-ISSN	16083040
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2010-10-27
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	xylanase cereals inhibition TAXI XIP TLXI Biomedicine general Microbiology Bioorganic Chemistry Biochemistry
Content Type	Text
Resource Type	Article
Subject	Biochemistry Biophysics Geriatrics and Gerontology

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