链折叠

自晶种成核导致结晶活化能和链折叠功减小，促进PTT的结晶。

Self-seeding nucleation leads to the decrease of crystallization active energy and chain folding work , promotes the overall crystallization process of PTT .

经过自晶种成核处理以后PTT的结晶温度明显提高，使用自晶种成核方法可以有效地降低PTT结晶活化能，减小端表面自由能，促进PTT的链折叠，提高PTT的结晶能力。

DSC results indicated that the crystallization temperature of PTT increased obviously after the process of self-seeding nucleation . The decrease of crystallization active energy and chain folding work indicates that the self-nucleation can greatly promote the overall crystallization of PTT .

等温结晶动力学分析结果表明，HIPP的半结晶时间、结晶活化能及分子链折叠端表面自由能均高于iPP。

The results of isothermal crystallization kinetics study indicates that the crystallization half-time ( t_ 1 / 2 ) of HIPP is longer , while its activation energy (Δ E ) and chain folding surface free energy (σ _e ) are higher , compared with those of iPP .

闭式传动链折叠门在船舶修造中的应用

Appliance of closed gearing chain folded door in ship building

二维紧密蛋白质链折叠序列的特性研究

A study of folding sequence of two-dimensional compact proteins

是什么趋势这些多肽链折叠呢？

What drives this polypeptide chain to fold up ?

聚合物片晶中链折叠模型的对称性讨论

Symmetry studies of chain folding in crystalline polymers

蛋白质只有当其链折叠到一个特定的三维结构才能发挥其生物学功能。

A protein molecule can fulfill their biological function , only when they fold into their specific three-dimensional structure .

指出了螺旋多肽链的扭曲变形结构比其均匀螺旋结构更稳定，和由螺旋多肽链的扭曲变形而产生的附加电荷间的静电吸引有助于蛋白质链折叠为三级结构。

It is shown that the twisting deformed structure of helix polypeptide chain is more stable than the uniform helix structure and the static attraction between the extra charges arising from deformation of helix polypeptide chain is advantageous to fold protein chain into the tertiary structure .

结论：AS时胶原区中的一个甘氨酸被缬氨酸替代后，不仅使发生替代处局部的二级结构发生变化，而且使整个α5（Ⅳ）链的折叠动力学发生改变。

Conclusion : Not only local structure of the substitution site but also folding kinetics of the entire α 5 chain may be changed due to Gly → Val substitution in Alport syndrome .

氨基酸连接起来形成多肽链，多肽链又折叠压缩成球状三维结构的功能蛋白。

The joining of the amino acids into a chain results in the formation of a polypeptide chain which then folds into the compact , globular three-dimensional structure that is a functional protein .

一种转录因子，其分子内部由于锌指离子的存在而形成多肽链内部的折叠，呈手指状突起。

Zinc finger proteins & One class of transcription factor proteins containing loop-shaped tandem repeating segments that bind zinc atoms .

这个链必然是弯曲折叠，而使这些半胱氨酸靠得很近。

The chain must fold on itself to allow these cysteines to be in close proximity .

随着压力的增加，无规卷曲含量逐渐增加，二硫键构象变化使得蛋白稳定性降低，酪氨酸残基包埋于侧链中，紧密折叠结构得以舒展。

Along with the increase of pressure , the content of random coil was increasing gradually , the stability decreasing owing to the conformation change of disulfide bonds , and tyrosine was buried in the side chain , accordingly the compactly plate sheet structure was to become loose .

在生物体内，通过调节多肽链的氨基酸分子序列结构，可以简便有效地调控其链间作用力和链的折叠模式，控制其组装成不同结构与功能的蛋白质。

By adjusting the sequence of amino acids in polypeptides can effectively control the chain interaction , chain folding modes , and control their assembly into proteins with different structures and living functions .

长支链结构增大了分子折叠链自由能，在结晶形成过程中，分子链更不容易折叠回到片晶中排列，因而长支化结构促进了γ晶的形成。

LCB structure increases the chain folding energy and makes molecular chain fold back more hardly , so it will facilitate the formation of γ crystal .