A Native Ternary Complex Trapped in a Crystal Reveals the Catalytic Mechanism of a Retaining Glycosyltransferase
作者:David Albesa‐Jové、Fernanda Mendoza、Ane Rodrigo‐Unzueta、Fernando Gomollón‐Bel、Javier O. Cifuente、Saioa Urresti、Natalia Comino、Hansel Gómez、Javier Romero‐García、José M. Lluch、Enea Sancho‐Vaello、Xevi Biarnés、Antoni Planas、Pedro Merino、Laura Masgrau、Marcelo E. Guerin
DOI:10.1002/anie.201504617
日期:2015.8.17
family of enzymes that play critical roles in a variety of cellular processes, including cell signaling, cell development, and host–pathogen interactions. Glycosyl transfer can proceed with either inversion or retention of the anomeric configuration with respect to the reaction substrates and products. The elucidation of the catalytic mechanism of retaining GTs remains a major challenge. A native ternary
糖基转移酶(GTs)包含一个重要的酶家族,在各种细胞过程中起着关键作用,包括细胞信号传导,细胞发育以及宿主与病原体的相互作用。相对于反应底物和产物,糖基转移可以以异头构型的转化或保留进行。阐明保留GT的催化机制仍然是一个重大挑战。据报道,GT的天然三元复合物以生产模式催化,在糖供体UDP-Glc,受体底物磷酸甘油酯和二价存在的情况下,保留了结核分枝杆菌的葡萄糖基-3-磷酸甘油酸合酶GpgS。阳离子辅助因子。通过结合结构,化学,酶促,分子动力学,N i型反应。