SIGNIFICANCE OF BETA-SHEET FORMATION FOR MICELLIZATION AND SURFACE-ADSORPTION OF SURFACTIN

被引：125

作者：

ISHIGAMI, Y

OSMAN, M

NAKAHARA, H

SANO, Y

ISHIGURO, R

MATSUMOTO, M

机构：

[1] NATL INST MAT & CHEM RES,TSUKUBA,IBARAKI 305,JAPAN

[2] NATL FOOD RES INST,TSUKUBA,IBARAKI 305,JAPAN

[3] KYOTO UNIV,CHEM RES INST,UJI,KYOTO 611,JAPAN

来源：

COLLOIDS AND SURFACES B-BIOINTERFACES | 1995年 / 4卷 / 06期

关键词：

BIOSURFACTANT; MONOLAYERS; ROD MICELLES; BETA-SHEET FORMATION; SURFACTIN;

D O I：

10.1016/0927-7765(94)01183-6

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

It was found that surfactin, an anionic lipopeptide biosurfactant, forms large rod-shaped micelles (micellar weight, 179000, aggregation number n = 173) having a critical CMC of 9.4 x 10(-6) M and a surface tension at the CMC gamma(CMC) of 30 mN m(-1) in 0.1 M NaHCO3 (pH 8.7). This excellent surface-active behaviour was attributed to the ease of piling of surfactin molecules organized by beta-sheet formation. Surfactin also showed a possible organization between molecules due to beta-sheet structure at the air-water interface under forced experimental conditions.

引用

页码：341 / 348

页数：8

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