无规则卷曲

圆二色谱（CD）对其二级结构的分析显示，蔗糖酶分子中α-螺旋占28.8%，β-折叠占27.9%，无规则卷曲占43.2%。

It was demonstrated that the enzyme has 28.8 % a-helix , 27.9 % p-sheet , 43.2 % random coil by the analysis of circular dichroism spectrum .

红外处理下马铃薯PPO失活从热效应方面来看，可能是α-螺旋向β-转角和无规则卷曲转化的转化而造成的。

From the thermal effects , the inactivation of potato PPO in infared radiation is probably caused by a-helix turning to P-turn and random coil .

结果表明：BCR-ABL蛋白融合区位于B细胞表位内，该表位含有α-螺旋和无规则卷曲结构。

The Results showed that the fusion region of BCR-ABL fusion protein ( p210 ~ ( BCR-ABL )) probably lo - cated in a B cell epitope which contained α - helix and random coil structure .

蛋白质的二级结构测量表明β-折叠对于3M尿素变性后的大豆蛋白在硬木上的粘接强度起着重要作用，而无规则卷曲是降低1M尿素变性7S大豆蛋白粘接强度的主要因素。

Protein secondary structures measurement indicated that the β - sheet played an important role on the adhesive strength of soy protein modified with 3 M urea with hardwood and random curl was the major factor reducing adhesive strength of 7S soy protein modified with 1 M urea .

经圆二色谱检测，明胶的二级结构含有61.5%的β转角和38.5%的无规则卷曲，而不含传统的α螺旋和β折叠。

Circular dichroism detection indicated the secondary structure of gelatin contains 61.5 % β - turn and 38.5 % random coil without the traditional a-helix and P-sheet .

二级结构均主要由无规则卷曲、α-螺旋及延伸链组成。信号肽预测显示，两个蛋白均没有信号肽。

The two effectors have no signal peptide . The secondary stucture of the two proteins were composed of random coil , alpha helix and extend strand .

丢失的α-螺旋逐步转变成为β-折叠和无规则卷曲，后两者参与了凝胶的结构。

Loss of a-helix gradually transformed into β - sheet and random coil , which the latter two were involved in the structure of the gel . 3 .

变性后酶的紫外差光谱在213和234nm处出现正吸收峰，表明酶肽链发生变化，酶分子由有序结构变成无规则卷曲；

Differential UV absorption spectra of the enzyme denatured in ethanol solutions showed two positive peaks at 213 and 234 nm , respectively . The peaks on the differential UV absorption spectra suggested that the conformation of enzyme molecule changed from orderly structure to out of order crispation .

结果表明，无ATP和cDNA时，核酸适体分子荧光强度较弱，大多数处于闭环状态，少数处于无规则卷曲状态。

The results showed that without ATP and cDNA , fluorescence intensity of the aptamers was weak , and the majority of the aptamers were closed-loop , and a few of aptamers were random coil .