多肽

The full-length cDNAs of rice and wheat S-adenosylmethionine decarboxylase gene were isolated and characterized. The rice SAMDC cDNA is 1560 bp in length, encoding a polypeptide of 398 amino acids, and the wheat SAMDC cDNA is 1351 bp in length, encoding a polypeptide of 392 amino acids. Both the rice and wheat SAMDC proteins contain the conserved proenzyme cleavage site and the PEST domains, which are commonly found in the SAMDC protein sequences of all eukaryotes.

克隆了水稻和小麦SAMDC基因的全长cDNA序列，所获得的水稻SAMDC基因序列长1560 bp，编码一个由398个氨基酸组成的多肽，小麦SAMDC基因序列长1351 bp，编码一个由392个氨基酸组成的多肽，二者均含有真核生物SAMDC蛋白所拥有的两个保守的氨基酸结构域：酶原剪切位点和PEST结构域。

Analysis of performance for five research schemes indicates that the residue is the main structural feature in this peptide system, and residue characterization can be used to describe the entire peptide. This will make characterization simpler and more efficient.

通过对五种表征方案进行对比分析发现，多肽的结构特征主要表现在氨基酸的残基上，可以用残基的矢量描述子来表征整个多肽的结构，从而使表征过程更为简洁有效。

Using of matrix assisted laser desorption/ionization time of flight mass spectrometry coupled with carboxypeptidase Y digestion for the analysis of C terminal peptide ladder by direct determination of the mixture of truncated peptide, the sequence of C terminus can be read out simplely from the mass differences between adjacent peptide peaks on the mass spectrum.

用羧肽酶Y水解蛋白质和多肽，结合飞行时间质谱测定酶解后缩短肽的质量，根据相邻两肽峰的质量差别读出蛋白质和多肽的C端序列，在pmol水平下测定了人促肾上腺皮质激素片段以及人血管紧张肽片段，其中人促肾上腺皮质激素片段测到了C端 15个氨基酸残基的顺序

There were on unique different protein observed in flag leaf at different development stage; but unique different protein were found in young spike at uninucleate microspore stage and non-1B/ 1R type male sterile lines lack a 17kD polypeptide compared with maintainers; at binucleate microspore stage and non-1B/ 1R type male sterile lines increase 17kD polypeptide compared with maintainers.

利用SDS-PAGE凝胶电泳技术对采用丙酮沉淀法提取的K型，C49S型和YS型小麦不育系和保持系旗叶小穗发育的单核期和二核期中的可溶性蛋白进行比较后发现，非1B/1R类K型不育系732A在小穗发育的单核期比同时期相应保持系732B少1条分子量为17kD的多肽，在小穗发育的二核期比同时期相应保持系732B多1条分子量为17kD的多肽。

It can rise an intensive processing additional value of leftover bits and pieces, produce bone milk polypeptide tablet and powder which is taken as basic materials to develop for the series of products such as fertilizers for vegetable and flower, fast food with corn and bone soup via fermentation zymolysis synchronous technology.

项目简介：通过发酵酶解同步技术，提高屠宰下脚料鲜骨深加工附加值，生产骨乳多肽片剂和以骨乳多肽粉为基料开发的蔬菜花卉骨汤料，玉米快餐骨汤粥系列产品。

DESCRIPTION】the ingredients of the product comes from abyssopelagic fishes of special pure and clean sea areas, adopting Limited Enzymic Degraded Technology, a self-owned intellectual property, that is using compound bioenzyme preparations at a low temperature to extract active ingredients through a special low-temperature extraction process and specific sheared protein to ensure the bioactivity of Collagen.

本品原料来自纯净、无污染的特定海域中的深海鱼类，采用具有自主知识产权的限制性酶切制备多肽技术（Limited Enzymic Degraded Technology），在低温下使用复合生物酶制剂，通过特殊低温萃取工艺提取有效成分，通过特异性的剪切蛋白质，保证了胶原蛋白原有的生物活性，并将原分子量为30万左右的胶原蛋白分子降解成3500左右的胶原蛋白多肽（约含30个左右的氨基酸残基），其分子长度降至30—50nm，集中度达到99.5%以上，呈白色或淡黄色，无异味，无杂物，不添加任何激素和化学物质，没有任何毒副作用。

A peptide antibiotics gene from Amaranthus hypochondriacus, Ah-AMP, was amplified by PCR and cloned. Sequence analysis results revealed that this gene is 261bp in length encoding a precursor polypeptide of 87 amino acid residues.

本文通过PCR技术从苋属植物千穗谷的总DNA中扩增出苋菜多肽抗生素的核基因片段，序列分析结果表明该基因长261bp，编码一个由86个氨基酸组成的Ah-AMP前体多肽。

Recombinant apoE〓 protein could inhibit the death of the neurocyte cell of mice brain induced by beta amyloidal peptide 25-35 fragment and the death of the SK-N-SH-neuroblastoma cell induced by beta amyloidal peptide 25-35 fragment and 1-40 fragment.

重组apoE〓蛋白对Aβ 25—35多肽诱导的胎鼠大脑皮质神经细胞凋亡及Aβ25-35和A β1-40多肽诱导的神经成纤维胶质瘤细胞生存力下降均具有明显的拮抗作用，表明apoE对神经退化性疾病中的细胞死亡具有拮抗作用。

The peptide antibiotics of amphibian skin are secreted by amphibian skin.They possess the function of antimicrobic and anticancer.

蛙皮多肽抗生素是由两栖动物皮肤分泌的，有抗菌、抗癌作用的多肽，广泛存在于两栖动物的皮肤分泌物中。

Glucose has obvious protection from the hot stability of the deer placenta polypeptide, The denaturation rate of the deer placenta polypeptide reduces 40.11%, the antioxygenic property enhances 34.19% when it is heated under 60℃ for 30min with glucose's joining.

葡萄糖对鹿胎盘多肽的热稳定性有明显的保护作用，它使鹿胎盘多肽在60℃的条件下加热30min 后的变性率降低了40.11%，抗氧化性提高了34.19%。

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。