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- W2021269518 abstract "We have parameterized and evaluated the proline homologue Aze (azetidine-2-carboxylic acid) for the gromos56a3 force-field for use in molecular dynamics simulations using GROMACS. Using bi-phasic cyclohexane/water simulation systems and homo-pentapeptides, we measured the Aze solute interaction potential energies, ability to hydrogen bond with water, and overall compaction, for comparison to Pro, Gly, and Lys. Compared to Pro, Aze has a slightly higher H-bonding potential, and stronger electrostatic but weaker non-electrostatic interactions with water. The 20-ns simulations revealed the preferential positioning of Aze and Pro at the interface of the water and cyclohexane layers, with Aze spending more time in the aqueous layer. We also demonstrated through simulations of the homo-pentapeptides that Aze has a greater propensity than Pro to undergo trans→cis peptide bond isomerization, which results in a severe 180° bend in the polypeptide chain. The results provide evidence for the hypothesis that the misincorporation of Aze within proline-rich regions of proteins could disrupt the formation of poly-proline type II structures and compromise events such as recognition and binding by SH3-domains." @default.
- W2021269518 created "2016-06-24" @default.
- W2021269518 creator A5018851528 @default.
- W2021269518 creator A5049095430 @default.
- W2021269518 creator A5074237429 @default.
- W2021269518 date "2013-02-01" @default.
- W2021269518 modified "2023-09-26" @default.
- W2021269518 title "Parameterization of the proline analogue Aze (azetidine-2-carboxylic acid) for molecular dynamics simulations and evaluation of its effect on homo-pentapeptide conformations" @default.
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- W2021269518 doi "https://doi.org/10.1016/j.jmgm.2012.11.006" @default.
- W2021269518 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/23261881" @default.
- W2021269518 hasPublicationYear "2013" @default.
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