Morant Anne Vinther, Jørgensen Kirsten, Jørgensen Charlotte, Paquette Suzanne Michelle, Sánchez-Pérez Raquel, Møller Birger Lindberg, Bak Søren
Plant Biochemistry Laboratory, Department of Plant Biology and The VKR Research Centre Proactive Plants, University of Copenhagen, 40 Thorvaldsensvej, DK-1871 Frederiksberg C, Copenhagen, Denmark.
Phytochemistry. 2008 Jun;69(9):1795-813. doi: 10.1016/j.phytochem.2008.03.006. Epub 2008 May 9.
Some plant secondary metabolites are classified as phytoanticipins. When plant tissue in which they are present is disrupted, the phytoanticipins are bio-activated by the action of beta-glucosidases. These binary systems--two sets of components that when separated are relatively inert--provide plants with an immediate chemical defense against protruding herbivores and pathogens. This review provides an update on our knowledge of the beta-glucosidases involved in activation of the four major classes of phytoanticipins: cyanogenic glucosides, benzoxazinoid glucosides, avenacosides and glucosinolates. New aspects of the role of specific proteins that either control oligomerization of the beta-glucosidases or modulate their product specificity are discussed in an evolutionary perspective.
一些植物次生代谢产物被归类为植物抗毒素。当含有它们的植物组织被破坏时，植物抗毒素会通过β-葡萄糖苷酶的作用而被生物激活。这些二元系统——两组分开时相对无活性的成分——为植物提供针对入侵食草动物和病原体的即时化学防御。本综述更新了我们对参与激活四类主要植物抗毒素（生氰糖苷、苯并恶嗪类糖苷、燕麦糖苷和硫代葡萄糖苷）的β-葡萄糖苷酶的认识。从进化的角度讨论了控制β-葡萄糖苷酶寡聚化或调节其产物特异性的特定蛋白质作用的新方面。
