Directed evolution using proteins comprising unnatural amino acids
申请人:Liu Chang
公开号:US09249408B2
公开(公告)日:2016-02-02
The invention provides methods and compositions for screening polypeptide libraries that include variants comprising unnatural amino acids. In addition, the invention provides vector packaging systems and methods for packaging a nucleic acid in a vector. Compositions of vectors produced by the methods and systems are also provided.
DIRECTED EVOLUTION USING PROTEINS COMPRISING UNNATURAL AMINO ACIDS
申请人:Liu Chang
公开号:US20110065596A1
公开(公告)日:2011-03-17
The invention provides methods and compositions for screening polypeptide libraries that include variants comprising unnatural amino acids. In addition, the invention provides vector packaging systems and methods for packaging a nucleic acid in a vector. Compositions of vectors produced by the methods and systems are also provided
Photocatalytic C–O Coupling Enzymes That Operate via Intramolecular Electron Transfer
作者:Jaehee Lee、Woon Ju Song
DOI:10.1021/jacs.2c12226
日期:2023.3.8
photocatalytic enzymes by introducing an Ir photocatalyst and a Ni(bpy) complex to an optimal protein scaffold in close proximity. Consequently, the enzyme generated C–Ocoupling products with up to 96% yields by harvesting visible light and performing intramolecular electron transfer between the two catalysts. We systematically modulated the catalyticactivities of the artificial photocatalytic cross-coupling
将光能高效且环保地转化为直接用于化学生产一直是酶设计的长期目标。在此,我们通过将 Ir 光催化剂和 Ni(bpy) 复合物引入最接近的最佳蛋白质支架来合成人工光催化酶。因此,该酶通过收集可见光并在两种催化剂之间进行分子内电子转移,生成产率高达 96% 的 C-O 偶联产物。我们通过调整催化组分的电化学性质、它们的位置和蛋白质内的距离,系统地调节了人工光催化交叉偶联酶的催化活性。因此,我们发现了在优化条件下表现出广泛底物范围的最佳表现突变体。
Biosynthesis of a Site-Specific DNA Cleaving Protein
作者:Hyun Soo Lee、Peter G. Schultz
DOI:10.1021/ja804653f
日期:2008.10.8
An E. coli catabolite activator protein (CAP) has been converted into a sequence-specific DNA cleaving protein by genetically introducing (2,2'-bipyridin-5-yl)alanine (Bpy-Ala) into the protein. The mutant CAP (CAP-K26Bpy-Ala) showed comparable binding affinity to CAP-WT for the consensus operator sequence. In the presence of Cu(II) and 3-mercaptopropionic acid, CAP-K26Bpy-Ala cleaves double-stranded DNA with high sequence specificity. This method should provide a useful tool for mapping the molecular details of protein-nucleic acid interactions.
A Genetically Encoded Bidentate, Metal-Binding Amino Acid