大腹圆蛛丝蛋白的氨基酸组成分析  

Analysis of Amino Acid Components of Araneus Ventricous Spider Silk

作　　者：潘志娟[1] 刘敏[1] 盛家镛[1] 

机构地区：[1]苏州大学材料工程学院,江苏苏州215021

出　　处：《丝绸》2003年第12期22-24,26,共4页Journal of Silk

基　　金：国家自然科学基金资助项目(50173018);江苏省青年科技创新人才项目资助(BK2002402)

摘　　要：分析了大腹圆蛛牵引丝、蛛网框丝和包卵丝的氨基酸组成,研究了蜘蛛丝氨基酸组成与纤维内分子排列状态以及分子结构的关系,研究表明,不同功能蜘蛛丝的氨基酸组成存在较大的差异,总的说来,大腹圆蛛丝中大侧基氨基酸含量较多,导致纤维的结晶度较低,大量的极性氨基酸使分子间的作用力增大,同时其氨基酸分布使纤维内的大分子链具有多种构象形式,从而使这种低结晶度纤维具有高强度和高伸长率。The amino acid components of Araneus Ventricous spider dragline, framework and egg-cased silks are analyzed. Therelationship between the amino acid and the molecular arrangement as well as the molecular structures in the fiber is investigated.The results show that there exists large difference in the amino acid components of different functional spider silks. In general, thecontent of large side amino acids is high, which results in lower crystal. While a great number of polar amino acids increase theinteraction force between molecules and the distribution of the acids makes the large molecular links with multiple conformations,which makes the fiber with higher strength and extension percentage.

关 键 词：大腹圆蛛 蜘蛛丝 丝蛋白 氨基酸组成 分子结构 

分 类 号：TS101.921[轻工技术与工程—纺织工程] TS102.33[轻工技术与工程—纺织科学与工程]