PheLysAlaAcm | 1333389-26-6

• 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
• 英文名称: PheLysAlaAcm
• CAS: 1333389-26-6
• 化学式: C₂₈H₃₅N₅O₅
• 分子量: 521.616
• InChiKey: RAGJBACHWPYZJC-TZYHBYERSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.73
• 重原子数：
  38.0
• 可旋转键数：
  12.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  169.55
• 氢给体数：
  5.0
• 氢受体数：
  7.0

反应信息

• 作为产物：
  描述：

  (S)-cyanomethyl 2-azido-3-phenylpropanoate 在 三异丙基硅烷 、 四丁基醋酸铵 、 N,N-二异丙基乙胺 、 三氟乙酸 作用下， 以 四氢呋喃 为溶剂， 反应 36.0h， 生成 PheLysAlaAcm
  参考文献：
  名称：

  N-Terminal Protein Modification Using Simple Aminoacyl Transferase Substrates

  摘要：

  Methods for synthetically manipulating protein structure enable greater flexibility in the study of protein function. Previous characterization of the Escherichia coli aminoacyl tRNA transferase (AaT) has shown that it can modify the N-terminus of a protein with an amino acid from a tRNA or a synthetic oligonucleotide donor. Here, we demonstrate that AaT can efficiently use a minimal adenosine substrate, which can be synthesized in one to two steps from readily available starting materials. We have characterized the enzymatic activity of AaT with aminoacyl adenosyl donors and found that reaction products do not inhibit AaT. The use of adenosyl donors removes the substrate limitations imposed by the use of synthetases for tRNA charging and avoids the complex synthesis of an oligonucleotide donor. Thus, our AaT donors increase the potential substrate scope and reaction scale for N-terminal protein modification under conditions that maintain folding.

  DOI：

  10.1021/ja2055098
• 作为试剂：
  描述：

  Boc-3-(2-萘基)-L-丙氨酸 在 三异丙基硅烷 、 PheLysAlaAcm 、 四丁基醋酸铵 、 N,N-二异丙基乙胺 、 三氟乙酸 作用下， 以 四氢呋喃 为溶剂， 反应 60.0h， 生成 NapLysAlaAcm
  参考文献：
  名称：

  N-Terminal Protein Modification Using Simple Aminoacyl Transferase Substrates

  摘要：

  Methods for synthetically manipulating protein structure enable greater flexibility in the study of protein function. Previous characterization of the Escherichia coli aminoacyl tRNA transferase (AaT) has shown that it can modify the N-terminus of a protein with an amino acid from a tRNA or a synthetic oligonucleotide donor. Here, we demonstrate that AaT can efficiently use a minimal adenosine substrate, which can be synthesized in one to two steps from readily available starting materials. We have characterized the enzymatic activity of AaT with aminoacyl adenosyl donors and found that reaction products do not inhibit AaT. The use of adenosyl donors removes the substrate limitations imposed by the use of synthetases for tRNA charging and avoids the complex synthesis of an oligonucleotide donor. Thus, our AaT donors increase the potential substrate scope and reaction scale for N-terminal protein modification under conditions that maintain folding.

  DOI：

  10.1021/ja2055098

文献信息

• Methods of modifying N-termini of a peptide or protein using transferases
  申请人：The Trustees of the University of Pennsylvania

  公开号：US09376700B2

  公开（公告）日：2016-06-28

  The invention includes a selective method of modifying the N-terminus of a protein using an aminoacyl tRNA transferase. In certain embodiments, the method comprises contacting a solution of the protein or peptide with a transferase and a derivative of a molecule, whereby the N-terminus of the protein or peptide is derivatized with the molecule.

  该发明涉及使用氨酰基tRNA转移酶选择性地修改蛋白质的N-末端的方法。在某些实施例中，该方法包括将蛋白质或肽溶液与转移酶和分子衍生物接触，从而使蛋白质或肽的N-末端与该分子衍生物发生衍生化反应。
• Expressed Protein Ligation at Methionine: N-Terminal Attachment of Homocysteine, Ligation, and Masking
  作者：Tomohiro Tanaka、Anne M. Wagner、John B. Warner、Yanxin J. Wang、E. James Petersson

  DOI：10.1002/anie.201302065

  日期：2013.6.10

  A useful handle: One major limitation of protein semi‐synthesis is the need for Cys at the ligation site in native chemical ligation reactions. It is shown that a transferase enzyme can deliver homocysteine to the N‐terminus of an expressed protein (see scheme). Homocysteine can be used in a ligation reaction and then converted to Met. This allows one to use the MetArg or MetLys motif as a point of

  一个有用的句柄：蛋白质半合成的一个主要限制是在天然化学连接反应中需要在连接位点使用 Cys。结果表明，转移酶可以将同型半胱氨酸传递到表达蛋白质的 N 端（参见方案）。同型半胱氨酸可用于连接反应，然后转化为 Met。这允许人们使用 MetArg 或 MetLys 基序作为半合成中的断开点。