L-Lysine Amino Acid Adsorption on Zeolite L: a Combined Synchrotron, X-Ray and Neutron Diffraction Study

被引：0
|
作者：
Beltrami, Giada
Martucci, Annalisa
Pasti, Luisa
Chenet, Tatiana
Ardit, Matteo
Gigli, Lara
Cescon, Mirco
Suard, Emmanuelle
机构：
来源：
CHEMISTRYOPEN | 2020年
关键词：
L-lysine adsorption; L zeolite; neutron and synchrotron X-ray diffraction; alpha-helical conformation; Bronsted acid site;
D O I：
10.1002/open.202000270
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Combined neutron and X-ray powder diffraction techniques highlighted the sorption capacity of the acidic L zeolite towards the L-lysine amino acid. The role of zeolite channels in the stabilization of the lysine absorbed and the effect of water on protein structure are elucidated at atomistic level. The stabilization of the L alpha-helical conformation is related to strong H-bonds between the tail aminogroups of lysine molecules and the Bronsted acid site as well as to complex intermolecular H-bond system between water molecules, zeolite and amino acid. This finding is relevant in the catalytic synthesis of polypeptide, as well as in industrial biotechnology by qualitatively predicting binding behaviour
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页数：2
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