期刊
CHEMBIOCHEM
卷 16, 期 5, 页码 827-833出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cbic.201402691
关键词
CXCR4; cyclotides; protein design; protein engineering; protein-protein interactions
资金
- National Institutes of Health [R01M090323]
- Southern California Clinical and Translational Science Institute
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R01GM113636, R01GM090323] Funding Source: NIH RePORTER
We report here the first rapid parallel production of bioactive folded cyclotides by using Fmoc-based solid-phase peptide synthesis in combination with a tea-bag approach. Using this approach, we efficiently synthesized 15 analogues of the CXCR4 antagonist cyclotide MCo-CVX-5c. Cyclotides were synthesized in a single-pot, cyclization/folding reaction in the presence of reduced glutathione. Natively folded cyclotides were quickly purified from the cyclization/folding crude mixture by activated thiol Sepharose-based chromatography. The different folded cyclotide analogues were then tested for their ability to inhibit the CXCR4 receptor in a cell-based assay. The results indicated that this approach can be used for the efficient chemical synthesis of libraries of cyclotides with improved biological properties that can be easily interfaced with solution or cell-based assays for rapid screening.
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