酪氨酸

Results showed that there was significant correlation between the two assays with catechol and tyrosine as substrate respectively.

结果表明，以邻苯二酚和酪氨酸为底物所测PPO活性极显著相关，邻苯二酚所测活性强，但酪氨酸所测活性的变异系数大。

Melanin from cheese and other food contained tyrosine, in the body under the action of enzymes, tyrosine into DOPA and then oxidation, the final polymerization into melanin.

黑色素来源于奶酪等食物内所含的酪氨酸，在体内酶的作用下，酪氨酸转化成二羟苯丙氨酸，然后氧化，最后聚合成黑色素。

MSCs did not proliferate within the alginate-GRGDY matrix during the 2 weeks examined. These results were further substantiated by concurrent cell density measurements using a hemocytometer.

在2周的检查期内，间充质细胞干细胞在甘氨酸－精氨酸－甘氨酸－天冬氨酸－酪氨酸藻酸盐环境中并没有发生增殖，这些结果在用血细胞计数器测量细胞密度时得到进一步确认。

These mutations greatly changed the level of protein synthesis, lipogenesis and JAK2 phosphorylation stimulated by GH, although they did not affect the expression of the GHR and ligand binding.

研究结果表明豚鼠GHR中的一些氨基酸残基的取代并不影响生长激素通过它而诱导的细胞事件，而另外一些氨基酸残基的取代，例如168位的酪氨酸和332位的丝氨酸分别用在其它种属GHR中高度保守的精氨酸和酪氨酸的取代后，则明显地影响着豚鼠GHR介导的GH诱导的生理效应。

In the protein of scolopendra, scorpio, pheretima,the content of Glycine, Alanine, Valine,Tyrosine,Phenylalanine and Arginie is higher,but the content of glutaminic acid is significantly lower than the daily animal and plant albumens.

探讨结果如下：一、氨基酸分布与蜈蚣、全蝎、地龙药理作用的关系在蜈蚣、全蝎、地龙三种天然动物药材中甘氨酸、丙氨酸、酪氨酸、苯丙氨酸、精氨酸含量高，谷氨酸含量则显著低于常见动植物蛋白。

Objective To explore effects of mutations in the tyrosine methionine aspartic acid aspartic acid motif of hepatitis B virus polymerase gene on lamivudine therapy.

目的 探讨乙型肝炎病毒多聚酶酪氨酸蛋氨酸天冬氨酸天冬氨酸基序变异对拉米夫定抗病毒疗效的影响。

These changes were prevented by genistein (a protein tyrosine kinase inhibitor) and antioxidant N-acetyl-L-cysteine, but promoted by sodium orthovanadate (a protein phosphatase inhibitor), which were administered to the SD rats 20 min before ischemia.

进一步的研究表明，缺血前20 min腹腔注射给药，然后缺血30 min，发现蛋白酪氨酸激酶抑制剂染料木黄酮和抗氧化剂N-乙酰半胱氨酸能显著地抑制核内STAT3的磷酸化水平及DNA结合活性的增加(磷酸化水平从2.3和2.5倍分别降为1.2和1.4倍， DNA结合活性则从2.8和3.7倍分别降为1.1和1.5倍)，而蛋白酪氨酸磷酸酶抑制剂矾酸钠则能明显地促进他们的增高(磷酸化水平从2.0倍增到3.4倍， DNA结合活性从3.1倍增为5.1倍)。

By the polycondensation of amino acid 5-fluorouracil -1, 3-dipropyl esters with bis (2-chloroethyl) phos- phoramidic dichloride in the presence of 〓 or in vacuo, ten new polymers containing 5- fluorouracil, nitrogen mustard and amino acid were synthesized.

将1，3-双-5-氟尿嘧啶与二氯膦甲酸乙酯或二氯膦乙酸乙酯在DMF中反应制备得到20个三元共聚物，体外抗肿瘤试验表明：含有甘氨酸、缬氨酸、苯丙氨酸和酪氨酸的聚合加显示了一定的选择性，并且分析讨论了生物活性与结构之间的关系。

Acceptable resolutions were achieved when it was applied for the separation of dipeptides including Leu-Tyr and Val-Tyr by using 1-butanol-acetic acid-water (4:1:5, V/V/V) solvent system. The proteins including cytochrome C and myoglobin, lysozyme and myoglobin, and fresh chicken egg-white proteins were well separated by 12.5% PEG1000-12.5% K2HPO4-75% water (pH 9.0) and 16% PEG 1000-12.5% K2HPO4-71.5% water (pH 8.0) system.

应用研究表明，采用正丁醇-醋酸-水(4：1：5， V/V/V)和PEG1000-磷酸钾盐-水(12.5：12.5：75， W/W/W)(pH 9.0)体系可以在较高的流动相流速和较高的固定相保留下分别实现对亮氨酸-酪氨酸和缬氨酸-酪氨酸二肽混合物以及细胞色素C与肌红蛋白、肌红蛋白与溶菌酶混合物及鸡蛋清样品中蛋白成分的成功分离。

Casein was hydrolysed with sulphuric acid under pressure and the hydrolysate was oxidized and nitrated by a mixture of sulphuric acid and potassium nitrate.

培养基中大部氨基酸来源是经硝酸钾处理后的酪蛋白水解液，另补充色氨酸、胱氨酸、蛋氨酸和酪氨酸。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。