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- W2166902786 abstract "Abstract Molecular dynamics simulations have been carried out on all the jacalin–carbohydrate complexes of known structure, models of unliganded molecules derived from the complexes and also models of relevant complexes where X‐ray structures are not available. Results of the simulations and the available crystal structures involving jacalin permit delineation of the relatively rigid and flexible regions of the molecule and the dynamical variability of the hydrogen bonds involved in stabilizing the structure. Local flexibility appears to be related to solvent accessibility. Hydrogen bonds involving side chains and water bridges involving buried water molecules appear to be important in the stabilization of loop structures. The lectin–carbohydrate interactions observed in crystal structures, the average parameters pertaining to them derived from simulations, energetic contribution of the stacking residue estimated from quantum mechanical calculations, and the scatter of the locations of carbohydrate and carbohydrate‐binding residues are consistent with the known thermodynamic parameters of jacalin–carbohydrate interactions. The simulations, along with X‐ray results, provide a fuller picture of carbohydrate binding by jacalin than provided by crystallographic analysis alone. The simulations confirm that in the unliganded structures water molecules tend to occupy the positions occupied by carbohydrate oxygens in the lectin–carbohydrate complexes. Population distributions in simulations of the free lectin, the ligands, and the complexes indicate a combination of conformational selection and induced fit. Proteins 2009. © 2009 Wiley‐Liss, Inc." @default.
- W2166902786 created "2016-06-24" @default.
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- W2166902786 date "2009-06-19" @default.
- W2166902786 modified "2023-10-18" @default.
- W2166902786 title "Structure, dynamics, and interactions of jacalin. Insights from molecular dynamics simulations examined in conjunction with results of X-ray studies" @default.
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- W2166902786 doi "https://doi.org/10.1002/prot.22486" @default.
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