Is It Possible to Find an Antimicrobial Peptide That Passes the Membrane Bilayer with Minimal Force Resistance? An Attempt at a Predictive Approach by Molecular Dynamics Simulation

被引:3
作者
Likhachev, Ilya, V [1 ,2 ]
Balabaev, Nikolay K. [2 ]
Galzitskaya, Oxana, V [1 ,3 ]
机构
[1] Russian Acad Sci, Inst Prot Res, Pushchino 142290, Russia
[2] Russian Acad Sci, Inst Math Problems Biol RAS, Keldysh Inst Appl Math, Pushchino 142290, Russia
[3] Russian Acad Sci, Inst Theoret & Expt Biophys, Pushchino 142290, Russia
基金
俄罗斯科学基金会;
关键词
antibacterial peptides; MD simulation; membrane; penetration; COLLISIONAL DYNAMICS; INSERTION; STABILITY; PROTEINS; MODEL;
D O I
10.3390/ijms23115997
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
There is still no answer to the mechanism of penetration of AMP peptides through the membrane bilayer. Several mechanisms for such a process have been proposed. It is necessary to understand whether it is possible, using the molecular dynamics method, to determine the ability of peptides of different compositions and lengths to pass through a membrane bilayer. To explain the passage of a peptide through a membrane bilayer, a method for preparing a membrane phospholipid bilayer was proposed, and 656 steered molecular dynamics calculations were carried out for pulling 7 amyloidogenic peptides with antimicrobial potential, and monopeptides (homo-repeats consisting of 10 residues of the same amino acid: Poly (Ala), Poly (Leu), Poly (Met), Poly (Arg), and Poly (Glu)) with various sequences through the membrane. Among the 15 studied peptides, the peptides exhibiting the least force resistance when passing through the bilayer were found, and the maximum reaction occurred at the boundary of the membrane bilayer entry. We found that the best correlation between the maximum membrane reaction force and the calculated parameters corresponds to the instability index (the correlation coefficient is above 0.9). One of the interesting results of this study is that the 10 residue amyloidogenic peptides and their extended peptides, with nine added residue cell-penetrating peptides and four residue linkers, both with established antimicrobial activity, have the same bilayer resistance force. All calculated data are summarized and posted on the server.
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页数:14
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