Title |
Interaction study between HCV NS5A-D2 and NS5B using 19F NMR
|
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Published in |
Journal of Biomolecular NMR, December 2017
|
DOI | 10.1007/s10858-017-0159-9 |
Pubmed ID | |
Authors |
Marie Dujardin, François-Xavier Cantrelle, Guy Lippens, Xavier Hanoulle |
Abstract |
The non structural protein 5A (NS5A) regulates the replication of the hepatitis C viral RNA through a direct molecular interaction of its domain 2 (NS5A-D2) with the RNA dependent RNA polymerase NS5B. Because of conflicting data in the literature, we study here this molecular interaction using fluorinated versions of the NS5A-D2 protein derived from the JFH1 Hepatitis C Virus strain. Two methods to prepare fluorine-labelled NS5A-D2 involving the biosynthetic incorporation of a 19F-tryptophan using 5-fluoroindole and the posttranslational introduction of fluorine by chemical conjugation of 2-iodo-N-(trifluoromethyl)acetamide with the NS5A-D2 cysteine side chains are presented. The dissociation constants (KD) between NS5A-D2 and NS5B obtained with these two methods are in good agreement, and yield values comparable to those derived previously from a surface plasmon resonance study. We compare benefits and limitations of both labeling methods to study the interaction between an intrinsically disordered protein and a large molecular target by 19F NMR. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 15 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Bachelor | 4 | 27% |
Other | 3 | 20% |
Student > Ph. D. Student | 3 | 20% |
Professor | 2 | 13% |
Student > Master | 1 | 7% |
Other | 1 | 7% |
Unknown | 1 | 7% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 8 | 53% |
Chemistry | 2 | 13% |
Medicine and Dentistry | 2 | 13% |
Chemical Engineering | 1 | 7% |
Agricultural and Biological Sciences | 1 | 7% |
Other | 0 | 0% |
Unknown | 1 | 7% |