RL人非霍奇金淋巴瘤细胞 | 1188-24-5

• 物质功能分类: 生物化工 - 生化试剂 - 氨基酸
• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 中文名称: RL人非霍奇金淋巴瘤细胞
• 中文别名: L-精氨酰-L-亮氨酸；RL人B细胞非霍奇金淋巴瘤细胞；RL人弥漫大B淋巴瘤细胞；精氨酰-亮氨酸
• 英文名称: (S)-2-((S)-2-Amino-5-guanidino-pentanoylamino)-4-methyl-pentanoic acid
• 英文别名: Arg-Leu；RL；N-L-arginyl-L-leucine；N-L-Arginyl-L-leucin；Arg Leu；Arginyl-Leucine；(2S)-2-[[(2S)-2-amino-5-(diaminomethylideneamino)pentanoyl]amino]-4-methylpentanoic acid
• CAS: 1188-24-5
• 化学式: C₁₂H₂₅N₅O₃
• 分子量: 287.362
• InChiKey: WYBVBIHNJWOLCJ-IUCAKERBSA-N

物化性质

• 密度：
  1.33
• 物理描述：
  Solid

计算性质

• 辛醇/水分配系数(LogP)：
  -4
• 重原子数：
  20
• 可旋转键数：
  9
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  157
• 氢给体数：
  5
• 氢受体数：
  5

安全信息

• 海关编码：
  2925290090

反应信息

• 作为产物：
  描述：

  Nα-CBZ-Nω-硝基-L-精氨酸 在 甲醇 、 sodium hydroxide 、 钯 、 溶剂黄146 作用下， 生成 RL人非霍奇金淋巴瘤细胞
  参考文献：
  名称：

  Studies on Polypeptides. VII. The Synthesis of Peptides Containing Arginine¹

  摘要：

  DOI：

  10.1021/ja01582a065

文献信息

• Flies and flowers: taxonomic diversity of anthophiles and pollinators
  作者：B.M.H. Larson、P.G. Kevan、D.W. Inouye

  DOI：10.4039/ent133439-4

  日期：2001.8

  The Diptera are the second most important order among flower-visiting (anthophilous) and flower-pollinating insects worldwide. Their taxonomic diversity ranges from Nematocera to Brachycera, including most families within the suborders. Especially important are Syrphidae, Bombyliidae, and Muscoidea. Other families, especially of small flies, are less appreciated and often overlooked for their associations with flowers. We have compiled records of their flower visitations to show that they may be more prevalent than usually thought. Our knowledge of anthophilous Diptera needs to be enhanced by future research concerning (i) the significance of nocturnal Nematocera and acalypterate muscoids as pollinators, (ii) the extent to which the relatively ineffective pollen-carrying ability of some taxa can be compensated by the abundance of individuals, and (iii) the role of Diptera as pollinators of the first flowering plants (Angiospermae) by using phylogenetic and palaeontological evidence. Specializations in floral relationships involve the morphology of Diptera, especially of their mouthparts, nutritional requirements, and behaviour, as well as concomitant floral attributes. The South African flora has the most highly specialized relations with dipterous pollinators, but in arctic and alpine generalist fly–flower relations are important in pollination and fly nutrition.

  摘要双翅目昆虫是全世界访花（嗜蚁）昆虫和授粉昆虫中第二重要的目。双翅目昆虫在分类学上具有多样性，从线虫纲（Nematocera）到臂翅目（Brachycera），包括亚目中的大多数科。其中尤为重要的是蚜蝇科（Syrphidae）、蝇科（Bombyliidae）和麝科（Muscoidea）。其他科，尤其是小型苍蝇科，与花卉的关系较少受到重视，也经常被忽视。我们汇编了它们的访花记录，以显示它们可能比通常认为的更为普遍。我们对嗜粉双翅目昆虫的了解需要通过未来的研究来加强，这些研究涉及：（i）夜行蝇类（Nematocera）和螨类作为授粉者的重要性；（ii）某些类群相对较弱的花粉携带能力在多大程度上可以通过个体的丰富程度来弥补；以及（iii）通过使用系统发育和古生物学证据来研究双翅目昆虫作为最早开花植物（被子植物）授粉者的作用。花卉关系中的特化涉及双翅目昆虫的形态，尤其是其口器、营养需求和行为，以及相关的花卉属性。南非植物区系与双翅目传粉昆虫的关系最为专业化，但在北极和高山地区，普通苍蝇与花卉的关系在传粉和苍蝇营养方面也很重要。
• A Novel<scp>L</scp>-Amino Acid Ligase from<i>Bacillus subtilis</i>NBRC3134, a Microorganism Producing Peptide-Antibiotic Rhizocticin
  作者：Kuniki KINO、Yoichi KOTANAKA、Toshinobu ARAI、Makoto YAGASAKI

  DOI：10.1271/bbb.80842

  日期：2009.4.23

  l-Amino acid ligase catalyzes the formation of an α-peptide bond from unprotected l-amino acids in an ATP-dependent manner, and this enzyme is very useful in efficient peptide production. We performed enzyme purification to obtain a novel l-amino acid ligase from Bacillus subtilis NBRC3134, a microorganism producing peptide-antibiotic rhizocticin. Rhizocticins are dipeptide or tripeptide antibiotics and commonly possess l-arginyl-l-2-amino-5-phosphono-3-cis-pentenoic acid. The purification was carried out by detecting l-arginine hydroxamate synthesis activity, and a target enzyme was finally purified 1,280-fold with 0.8% yield. The corresponding gene was then cloned and designated rizA. rizA was 1,242 bp and coded for 413 amino acid residues. Recombinant RizA was prepared, and it was found that the recombinant RizA synthesized dipeptides whose N-terminus was l-arginine in an ATP-dependent manner. RizA had strict substrate specificity toward l-arginine as the N-terminal substrate; on the other hand, the substrate specificity at the C-terminus was relaxed.

  l-氨基酸连接酶以依赖 ATP 的方式催化未受保护的 l-氨基酸形成 α-肽键，这种酶对高效生产多肽非常有用。我们进行了酶纯化，从生产多肽抗生素根肿灵的微生物枯草芽孢杆菌（Bacillus subtilis NBRC3134）中获得了一种新型 l-氨基酸连接酶。根瘤菌素是一种二肽或三肽抗生素，通常含有 l-精氨酰-l-2-氨基-5-磷酰基-3-顺式戊烯酸。通过检测精氨酰羟氨酸盐合成活性进行纯化，最终纯化出目标酶 1280 倍，产率为 0.8%。然后克隆了相应的基因，并将其命名为 rizA，rizA 的长度为 1 242 bp，编码 413 个氨基酸残基。研究人员制备了重组 RizA，发现重组 RizA 能以 ATP 依赖性方式合成 N 端为 l-精氨酸的二肽。RizA对N端底物精氨酸具有严格的底物特异性，而对C端的底物特异性则比较宽松。
• DIPEPTIDE-CONTAINING COMPOSITION FOR ORAL ADMINISTRATION
  申请人：KYOWA HAKKO KOGYO CO., LTD.

  公开号：EP1941896A1

  公开（公告）日：2008-07-09

  The present invention provides a composition for oral administration, which comprises at least one kind of dipeptide represented by the formula:         X-Y (wherein X represents alanyl, glycyl, arginyl, seryl, α-aspartyl or α-glutamyl, and Y represents valine, leucine or isoleucine), with an object of providing a composition for oral administration which is excellent in nutrition, pharmacological effect and gustation and comprises at least one kind selected from valine, leucine and isoleucine, or providing a composition for oral administration which is excellent in processing characteristics such as solubility and tableting property and comprises at least one kind selected from valine, leucine and isoleucine.

  本发明提供了一种口服组合物，它包含至少一种由式表示的二肽： X-Y (其中 X 代表丙氨酰、甘氨酰、精氨酰、丝氨酰、α-天冬氨酰或α-谷氨酰，Y 代表缬氨酸、亮氨酸或异亮氨酸），其目的是提供一种营养、药效和口感俱佳的口服组合物，该组合物至少包含一种选自缬氨酸、亮氨酸和异亮氨酸的二肽、或提供一种口服组合物，该组合物在加工特性（如溶解性和压片性能）方面非常出色，并包含至少一种选自缬氨酸、亮氨酸和异亮氨酸的成分。
• Detoxification of microbial virulence factors in oral cavity
  申请人：The Procter & Gamble Company

  公开号：US10156566B2

  公开（公告）日：2018-12-18

  A method for identifying constituents for detoxifying oral virulence factors and a method for determining the effectiveness of detoxifying agents.

  一种确定口腔致病因子解毒成分的方法和一种确定解毒剂有效性的方法。
• Detection of oral microbial virulence factors
  申请人：The Procter & Gamble Company

  公开号：US10267797B2

  公开（公告）日：2019-04-23

  Methods for detecting and quantifying toxins present in the oral cavity. The methods may include providing a biological sample, providing reporter cells expressing one or more Toll like receptors, exposing the cells to the biological sample, measuring the EC50 value of the lipopolysaccharide on activation of a Toll like receptor, quantification of the lipopolysaccharide in the biological sample.

  检测和量化口腔中毒素的方法。这些方法可包括提供生物样本，提供表达一种或多种类似 Toll 受体的报告细胞，将细胞暴露于生物样本，测量脂多糖激活类似 Toll 受体的 EC50 值，量化生物样本中的脂多糖。