四级结构

从构象中可以看出，Pena1空间结构比较简单，没有复杂的三、四级结构，二级结构主要以α-螺旋为主。

It can be seen from modeling result that spacial structure of Pen a 1 was simple , with no complicated three or quaternary structure . The secondary structure was rich in alpha helix .

蛋白内源荧光光谱表明，Co~（2+），Hg~（2+）和Ag~+的结合会影响蛋白三级和四级结构，这一点可以从近紫外圆二色谱和Soret圆二色谱数据得到证实。

The intrinsic fluorescence spectra , shows that Co2 + , Hg2 + and Ag + affect tertiary and quaternary structure of Hb which is supported by the CD data in near-UV spectra and Soret CD spectra .

而在亲水性有机溶剂DMF中，组成Hb分子的两个二聚体分离，肽链部分舒展，表明其二、三级结构和四级结构遭到不同程度的破坏。

However , when in hydrophilic organic solvent such as dimethylformamide , the two dimers of Hb molecule become separate and unfold to a certain extent .

基于支持向量机和贝叶斯方法的蛋白质四级结构分类研究

Classification of quaternary structure using support vector machines and Bayes methods

且主要为四级结构面，多为脆-韧性断层。

And mainly for quaternary structure surface , many for brittle-ductile faults .

计算实验表明蛋白质一级结构包含着四级结构信息。

Computational experiments have shown that protein primary sequence contains quaternary structure information .

这也进一步证实了蛋白质原始序列包含着四级结构信息。

It is further confirmed that protein primary sequence encodes quaternary structure information .

目的解析大肠杆菌T蛋白的四级结构。

OBJECTIVE To describe the tertiary structure of T - protein from Escherichia coli .

很多蛋白质尤其是酶类，是低聚物，因此拥有四级结构。

A great many proteins , especially enzymes , are oligomeric and consequently possess quaternary structure .

由于对它们的四级结构的了解甚少，对于结构与功能的关系研究还未获得统一。

Because of their quaternary structure of the poorly understood , the relationship between structure and function has not been uniform .

许多蛋白质结构主要用三种标准描述，但是如果蛋白质包含一个以上的多肽链，就必需考虑四级结构标准。

Some proteins consist of more than one polypeptide chain , and the association of these subunits in the protein gives rise to the quaternary structure .

在四级结构预测方面，对基于蛋白质结构认识的结构预测、从头预测方法等进行了综述。

Knowledge based protein structure prediction methods such as homology modeling and inverse folding or threading , and ab initio prediction method were reviewed in tertiary structure modeling of protein .

三级、四级结构包含更多的信息，且这些结构自然地包含于ρ1中。

If ρ _1 of protein or DNA is regarded as a high structure , then ρ _1contains more informations than primary , secondary , tertiary , quatemary structure of DNA or protein and they ate included in ρ _1 .

叙述了钢铁企业信息化的目标、任务和四级功能结构，重点阐述了产销一体化系统ISPS和钢铁企业信息化的六类关键技术。

Target , assignment and 4 levels function architecture of enterprise information system in iron and steel industry are described . Emphasis of discussion is put on ISPS ( Integrated System for Production & Sales ) system and 6 categories of key technique for iron and steel enterprise information system .

数据库系统的四级模式结构

The Mode Structure of Four Classes for Database System

构建了平台的系统构架，详细设计讨论了接口层、数据层、业务层和表示层四级功能逻辑结构，制定了DIY平台的硬件和软件需求。

We construct the System architecture , then detailed design the Access layer , the data layers , the service layers and the Presentation Layer , the function logical organization of four layers , setting the hardware and the software Standard of the DIY platform .

大学英语四级考试语法结构小结

Summary of Grammar of CET 4

柱塞采用四级外圆结构，有效提高了强度，确保了喷油泵工作的稳定性。

Plunger piston is four-class ex-circle structure , which efficiently improved intensity , and ensured the stabilization of the fuel injection pump .

首次提出了分四级描述的结构模型，评价并总结了前人所提出的结构模型。

A four - grade pore structure model was brought forward for the first time , while all the previous structure models were evaluated .

本文采用积分方法对本文设计的线圈式两极纵向磁场触头结构和线圈式四级纵向磁场触头结构的纵向磁场三维分布进行了计算分析。

The integral method is adopted caculate and analyze to AMF three-dimension distruction which is the structure of coil type four-pole and the structure of coil type double-pole and study the size of two kind of electrode structure axial magnetic flux density distribution and its fielduniformity .

通过行政性分权改革，产生了上海模式，建立了两级政府、三级管理的城市管理体制；通过社会性分权改革，产生了江汉模式，逐步形成两级政府、四级管理的治理结构。

Via the administrative decentralization reform , Shanghai Mode came into being , the city management system of two-level governments , three-level management was established ; via the sociality decentralization reform , Jianghan Mode came into being , and gradually formed the structure of two-level government , four-level management .