多肽

The separation purities by new method were determined and compared with those of some traditional methods by SDS-PAGE gradient electrophoresis.

其次，采用中性蛋白酶、碱性蛋白酶等几种常用的蛋白酶对分离的7S和11S球蛋白进行酶解比较实验，发现在相同条件下，7S比11S酶解后的酸溶多肽得率高，7S比11S相对更容易被酶解；通过扫描电镜和SDS-PAGE电泳分析7S和11S的酶解产物，表明7S和11S分子酶解前后的变化明显，但两种大豆蛋白经酶解作用后，均有相当部分未被酶解的蛋白分子残留在酶解残渣中，而酶解离心后的上清液中则已基本不存在原来的蛋白质大分子。

Obviously, different structures and properties of the active center of these heme proteins lead to different reactivities and natural functions, and the primary difference is the interaction between the protein peptide chain and the heme group.

显而易见，血红素类蛋白质分子活性中心结构和性质的差异导致了它们不同的反应功能，非常重要的原因在于不同的蛋白质分子中多肽链和血红素辅基的相互作用形式不同。

Objective To explore the possible function and significance process of experimental gastric ulcer in rat.

文章摘要：目的探讨胰多肽在大鼠胃溃疡自愈期间的可能作用及意义。

It is composed of three polypeptide chains which are connected by disulfide bonds.

还原性SDS—PAGE的结果表明，它由三条多肽链共价结合而成。

Peptide nucleic acid is a kind of new nucleic acid mimic invented in the early 1990s', in which the deoxyribose phosphate backbone has been replaced by a pseudo-peptide polymer to which the nucleobases are linked. PNA is uncharged, highly stable in chemical and biological environments, and binds complementary DNA and RNA targets with remarkably high affirnity and specificity.

肽核酸是二十世纪九十年代初合成的一种全新的核酸类似物，它以多肽骨架完全替代DNA中的脱氧核糖磷酸二酯键的骨架，呈电中性，具有极高的生物和化学稳定性、极强的核酸结合能力和特异性，在分子生物学的许多方面得到广泛应用。

The review describes methods of de novo sequencing of peptides by mass spectrometry.

本综述描述了通过质谱进行多肽从头测序的方法。

Exendin-4 present in the salivary gland of the reptile, Gila monster, is a high-affinity agonist for the mammalian GLP-1 receptor.

Exendin-4是从希拉毒蜥蜴唾液中提取的多肽，对于哺乳动物GLP-1受体有高度亲和力。

In 1949, in research on the role of hemoglobin in sickle cell anemia, Linus Pauling helped refine the one-gene-one-enzyme hypothesis into the one-gene-one-polypeptide hypothesis.

在1949年，对镰刀状细胞贫血症的研究对一个基因一个酶的假说进一步上升为一个基因一个多肽。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。