锦纶长丝染色均匀度判色新方法

锦纶长丝的染色均匀度测试方法一直是采用人工判色方法,其判色结果会因人眼目光的不同导致经常会存在一定的误差,对企业节约成本和实际生产应用相当不利。本文提出了一种利用测试锦纶DTY长丝热收缩应力的方法,用热应力测试结果对锦纶染色性能进行预判,不需要进行织袜染色,为企业节约大量的人工成本。     

Structures and properties of chicken myofibrillar protein gel induced by microwave heating

Structures and properties of myofibrillar protein gel prepared at different power (300–800 W) were evaluated. Amino acid analysis demonstrated that changes in microwave power did not alter primary structure of gel. However, an increase in microwave power could change higher structures of gel. As microwave power increased, α-helix content decreased and β-sheet content increased. Increased microwave power probably facilitated protein to unfold and expose the internal groups, causing surface hydrophobicity and the formation of disulphide bonds were enhanced, which indicated changes in tertiary and quaternary structures of protein. At 500 W, gel had the best ultrastructure where surface morphology, springiness and water holding capacity reached the optimum. Our findings suggested that microwave at an appropriate power (500 W) could change higher structures of myofibrillar protein gel to achieve desired processing and quality protein gel characteristics.     

非常规蛋白基木材胶黏剂研究现状及发展前景

介绍了动物和植物型非常规蛋白资源的种类及其制备蛋白基木材胶黏剂的研究现状和存在的问题,展望了非常规蛋白胶黏剂的发展前景。     

APOBEC 家族的功能研究进展

APOBEC是人体内具有胞嘧啶脱氨酶活性的家族，共11个成员，是人体的天然防御者。 APOBEC通过与DNA和RNA结合，使底物上的胞嘧啶C脱氨基，可完成其各自不同的功能。 APOBEC1编辑载脂蛋白B的mRNA，AID在抗体成熟中的体细胞超突变和类别转换重组中起关键作用，APOBEC3可抑制反转录病毒复制，而APOBEC2和APOBEC4的功能还不完全清楚。采用文献综述法，比较分析近年来国内外关于APOBEC家族各成员的结构和功能研究的新进展，为进一步研究APOBEC家族的抗病毒功能和艾滋病等疾病的治疗提供参考。