Membrane partitioning of peptide aggregates: coarse-grained molecular dynamics simulations
收藏DataCite Commons2020-08-27 更新2024-07-27 收录
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Coarse-grained molecular dynamics (CGMD) simulation technique (MARTINI force field) is applied to monitor the aggregation of helical peptides representing the transmembrane sequence and its extension of bone marrow stromal cell antigen 2 (BST-2). One of the peptides is coupled with a protein transducing domain (PTD) of nine arginine residues (R9) at its <i>N</i>-terminal side as well as a peptide, pep11**, which has been shown to bind to human papilloma virus 16 (HPV16) E6 oncoprotein. A short hydrophobic stretch of the transmembrane domain (TMD) of BST-2 aggregates the fastest and inserts into a lipid membrane. An aggregate of R9-pep11** attaches to the membrane <i>via</i> simultaneous contact of many arginine residues. Monomers from the aggregates of the shortest of the hydrophobic TMDs dissolve into the opposing leaflet when the aggregate spans the bilayer. A ‘flipping’ of the individual monomeric peptides is not observed. Communicated by Ramaswamy H. Sarma
提供机构：
Taylor & Francis
创建时间：
2019-02-27
