Spatial distribution of spin-labeled trichogin GA IV in the gram-positive bacterial cell membrane determined from PELDOR data
作者:A. D. Milov、R. I. Samoilova、Yu. D. Tsvetkov、V. A. Gusev、F. Formaggio、M. Crisma、C. Toniolo、J. Raap
DOI:10.1007/bf03166186
日期:2002.10
echo is used to study the spatial distribution of spin-labeled [TOAC-4]-trichogin GA IV analog bound to the cell membrane of the Gram-positive bacteriumMicrococcus luteus. The intermolecular dipole-dipole spin-spin interaction of TOAC spin labels has been experimentally studied at 77 K in glassy dispersions of the spherical cell particles. It is shown that the nonaggregated peptide molecules are distributed
Trichogin GA IV 是一种最短的真菌来源的无环线性多肽抗生素,其特征是在 C 端存在三个 α-氨基异丁酸残基、一个 N-辛酰基和一个氨基醇。它的抗生素活性通常被认为是基于其自组装和膜修饰特性。电子自旋回波中的双电子-电子共振技术用于研究与革兰氏阳性菌藤黄微球菌的细胞膜结合的自旋标记的 [TOAC-4]-trichogin GA IV 类似物的空间分布。TOAC 自旋标记的分子间偶极-偶极自旋-自旋相互作用已在 77 K 下在球形细胞颗粒的玻璃状分散体中进行了实验研究。结果表明,未聚集的肽分子分布在细胞质膜上。