亮氨酸
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Objective: To set up a method for determination of arginine and leucine in human fibrin sealant kit.
目的：建立HPLC法测定人纤维蛋白粘合剂中盐酸精氨酸和亮氨酸的含量。
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The differentiation between leucine and isoleucine as part of the isolated peptide could be achieved after comparison of the 13C chemical shifts with those obtained from the single amino acids.
配有亮氨酸的甲基组中13C 的化学位移的共振频率的正常范围在20.0 和 23.3 ppm 之间，但是相对的，配有亮氨酸基的甲基组则显示出高场位移，范围在11.9和 15.9 ppm 之间。
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The fragment m/z 132 is 19 amu above the standard fragment mass for leucine or isoleucine, respectively; therefore, one of these amino acids has to be the C-terminal part of the dipeptide.
破片 m/z 132 分别比亮氨酸或亮氨酸残留物的标准破片质量多19个原子质量单位。因此，这些氨基酸中的一个个只能是二肽中的羧基末端。
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Levels of leucine that is high in cereal grains.
c。 这很可能是由日粮中亮氨酸水平高所引起，谷物的亮氨酸含量高。
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In every group, rabbits were subdivided into experimental and control subgroups. 2 Rabbits were bullets injected followed by continuous injected with 13C labeled leucine, glucose, and lactic acid; 3 Blood were drewed before and 150, 160, 170, and 180 min after the initiation of isotopes injection for material analysis; 4 Exhale gas were collected every 5 min in the first 30 min followed by every 30 min there after for material analysis; 5 After centrifuge in low temp the supernatant of the blood samples were collected and went through axon and anon exchange column treatment; 6 Treated blood sample was used for 13C labeled leucine, glucose lactic acid examination through mass spectrograph; 7 The exhale gas was collected for 13CO2 exam through gas-phase mass spectrograph; 8 CO2 total production rate (V13CO2), body various substances production, oxidation speed, and substances metabolic percentage all can be calculated through equations provided by references below; 9 Data was processed through student t test.
分亮氨酸、葡萄糖和乳酸三组各取健康新西兰兔16只，每组再分为高代谢脓毒症组和对照组两部分，建模方法同第一部分；2）三组分别先静脉弹丸式推注再持续灌注13C标记的亮氨酸、葡萄糖和乳酸；3）灌注前抽取动脉血作为背景值，灌注达150，160，170和180min分别抽取动脉血2ml用于质谱分析；4）实验开始后前30min中每5min收集呼出气一次，随后每30min收集呼出气一次，用于气相质谱分析；5）血样经过低温离心取上清液，过阳离子及阴离子交换树脂，再经衍生化处理；6）处理过的血样进入气相色谱－质谱仪，测量其13C标记的亮氨酸、葡萄糖和乳酸丰度；7）实验兔的呼出气通过13CO2气相质谱分析仪测定其中的13CO2丰度（E13CO2）；8）利用文献提供的公式算出CO2总生成率（V13CO2）以及机体各物质的通量、氧化速率以及物质代谢百分比等；9）数据分析处理采用t检验。
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N L-Leucine Producer,Strain No .145,was obtained from mutants resistant to α-amino-β-hydroxyl valeric acid and rifampin by mutagenizing Brevibacterium Tianjinese T6-13 with ul-traviolet rays,It produced L-Leucine up to 32mg/mL on shaker and 21.8mg/mL of L-Leucine was produced in 16 liter fermentor in 60 hours.
以天津短杆菌T6～13为出发菌株，采用紫外线进行诱变处理，筛选α－氨基－β－羟基戊酸和利福平抗性突变株，获得一株L－亮氨酸产生菌No.145，L－亮氨酸摇瓶产量可以达32.1mg／mL。在16L发酵罐中培养60h，L－亮氨酸产量可以达21.8mg／mL葡萄糖转化率可以达20％。
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The cancers studied here were throat cancer, aute non- lymphoblas He leukem ia and acut lymphoblastic leukemia. The result s indicated that,(1)the levels of Leu, Lys, Ser Asn,Ile,Gly,and Thr were obviously decreased whea lse the levels of orn, Trp evidently increased in cultural liquid of throat can cer cell line indicating that the growth of HepⅡ cell consumed 7 amino acids and releaced 2 amino acids into cultural liquid.(2)the levels of Glu, Gls, Leu, Phe, Tyr and Trp were evidently increased while the levels of Thr , His, Ala decreased in plasma from patient with ANLL. These r esults were consistent with the previous report.(3)the levels of Gly, Trp and Phe in plasma from patients with ANLL evidently de creased and the levels of Ala, His increased after therapy indicating that cance r cells were growing in an anaerobic catabolism state.
这些癌肿包括喉癌HepⅡ细胞，急性非淋巴细胞白血病和急性淋巴细胞白血病，结果表明：(1)喉癌细胞株培养过程中亮氨酸、赖氨酸、丝氨酸、天冬酰胺、异亮氨酸、甘氨酸以及苏氨酸等水平明显降低，而色氨酸水平明显增加，说明喉癌细胞的生长繁殖必须依赖以上7种氨基酸同时释放了色氨酸；(2)急性非淋巴细胞白血病患者血浆中的谷氨酸、甘氨酸、亮氨酸、苯丙氨酸、酪氨酸和色氨酸等水平明显升高，而苏氨酸、组氨酸、丙氨酸等水平明显降低，这些结果与国际报道相一致；(3)经治疗后，ANLL患者血浆中甘氨酸、色氨酸和苯丙氨酸等水平明显降低，而丙氨酸、组氨酸等水平明显升高，表明肿瘤细胞处在无氧代谢。
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Analysis of the spectrum obtained by means of homonuclear H,H-correlation spectroscopy revealed a coupling between the methylene group with a chemical shift of 2.08 ppm and the methylene group at 2.42 ppm as well as the proton at 3.76 ppm, as expected for a glutamic acid moiety.
作为独立的肽中一部分的亮氨酸和亮氨酸基之间的区别可以通过将13C 化学位移和从其它单个氨基酸中获得的化学位移进行对比后得出。
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Results Mobiligy shifts of SSCP in exon 5 of presenilin-1 was detected in 4 cases with Alzheimer,s disease. Two missense mutation were found in the patients by DNA sequence analyse, one mutation was Leu 130 Met and the other was Vall 57 Leu.Another 11 patients showed one single strend shifted rapidly. But none mobility shifts of SSCP were found in patients with vascular dementia and normal controls. Conclusions It is shown that mutations in exon 5 of presenilin-1 also exist in the patients with sporadic Alzhemer?
结果 发现4名SAD患者的PCR产物SSCP分析发生泳动异常，DNA序列分析发现：这4名SAD患者的130号密码子发生了CTG→ATG错义突变(388位点发生C→A突变)，使编码的氨基酸由亮氨酸变为蛋氨酸(Leu 130 Met)；157号密码子发生了GTG→CTG错义突变(469位点发生G→C突变)，使编码的氨基酸由缬氨酸变为亮氨酸(Val 157 Leu)，另有11名患者SSCP表现为一条单链增快，其性质待定。
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A pair of optical isomerism amphiphlic molecules L-C10HLN-(4-decaoxygen-2-hydroxybenzene methylene-L-leucine and D-C10HLN-(4-decaoxygen-2-hydroxybenzene methylene-D-leucine were synthesized.
製备了一对旋光异构的两亲分子L-C10HL（N-（4-癸氧基-2-羥基苯亚甲基）-L-亮氨酸）和D-C10HL（N-（4-癸氧基-2-羥基苯亚甲基）-D-亮氨酸）。
- 更多网络解释与亮氨酸相关的网络解释 [注：此内容来源于网络，仅供参考]
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CUA：亮氨酸
A 亮氨酸(CUA) B 组氨酸(CAU)C 天门冬氨酸(GAU) D 缬氨酸(GUA)18.杂种红花阔叶的牵牛花植株(AaBb)与"某植株"杂交,其后代的表现型为:3红阔:1红窄:3白阔:1白窄,"某植株"的基因型和表现型为
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I Isoleucine：亮氨酸
Val 缬氨酸 L Leucine | Leu 亮氨酸 I Isoleucine | Ile 异亮氨酸 M Methionine
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labeled leucine：标记亮氨酸
label symbol 标记符号 | labeled leucine 标记亮氨酸 | labeled sodium ion 示踪钠离子
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lap：亮氨酸氨基转肽酶
另外血清AFU活惟测定在某些转移性肝癌、肺癌、乳腺癌、卵巢或子宫癌之间有一些重叠肝功能指标,甚至在某些非肿瘤性疾患如肝硬化、慢性肝炎和消化道出血等也有轻度升高,因此要注意鉴别. 另外在患有肝脏肿瘤时γ-GT、ALP、亮氨酸氨基转肽酶(LAP)、5'-NT等也常常出现升高.
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leucine zipper：亮氨酸拉链
亮氨酸拉链(leucine zipper)是由伸展的氨基酸组成,每7个氨基酸中的第7个氨基酸是亮氨酸,亮氨酸是疏水性氨基酸,排列在. 螺旋的一侧,所有带电荷的氨基酸残基排在另一侧. 当2个蛋白质分子平行排列时,亮医学教育网原 创氨酸之间相互作用形成二聚体,
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leucine zipper：亮氨酸拉链[亮氨酸出现周期性重复的一种DNA结合域,可形成卷曲螺旋结构]
lettuce necrotic yellows virus 莴苣坏死黄化病毒 | leucine zipper 亮氨酸拉链[亮氨酸出现周期性重复的一种DNA 结合域,可形成卷曲螺旋结构] | leucoagglutinin 白细胞凝集素
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leucine zipper：亮氨酸拉链[亮氨酸出现周期性重复的一种DNA 结合域,可形成卷曲螺旋结
lettuce necrotic yellows virus 莴苣坏死黄化病毒 | leucine zipper 亮氨酸拉链[亮氨酸出现周期性重复的一种DNA 结合域,可形成卷曲螺旋结 | leucoagglutinin 白细胞凝集素
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leucine zipper：亮氨酸拉链[亮氨酸出现周期性重复的一种DNA结合域,可形成卷
leptotene stage 细线期 | lettuce necrotic yellows virus 莴苣坏死黄化病毒 | leucine zipper 亮氨酸拉链[亮氨酸出现周期性重复的一种DNA结合域,可形成卷
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leucine aminopeptidase：亮氨酸氨肽酶
leucine 亮氨酸 | leucine aminopeptidase 亮氨酸氨肽酶 | leuceeyte 白血球
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leucine aminopeptidase：亮氨酸氯肽酶
leren 食用兰花蕉 | leucine aminopeptidase 亮氨酸氯肽酶 | leucinimide 环缩二亮氨酸