| Title : Nicotinic agonist binding site mapped by methionine- and tyrosine-scanning coupled with azidochloropyridinyl photoaffinity labeling - Tomizawa_2009_J.Med.Chem_52_3735 |
| Author(s) : Tomizawa M , Talley TT , Park JF , Maltby D , Medzihradszky KF , Durkin KA , Cornejo-Bravo JM , Burlingame AL , Casida JE , Taylor P |
| Ref : Journal of Medicinal Chemistry , 52 :3735 , 2009 |
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Abstract :
Agonists activating nicotinic acetylcholine receptors (nAChR) include potential therapeutic agents and also toxicants such as epibatidine and neonicotinoid insecticides with a chloropyridinyl substituent. Nicotinic agonist interactions with mollusk (Aplysia californica) acetylcholine binding protein, a soluble surrogate of the nAChR extracellular domain, are precisely defined by scanning with 17 methionine and tyrosine mutants within the binding site by photoaffinity labeling with 5-azido-6-chloropyridin-3-yl probes that have similar affinities to their nonazido counterparts. Methionine and tyrosine are the only residues found derivatized, and their reactivity exquisitely depends on the direction of the azido moiety and its apposition to the reactive amino acid side chains. |
| PubMedSearch : Tomizawa_2009_J.Med.Chem_52_3735 |
| PubMedID: 19459645 |
Tomizawa M, Talley TT, Park JF, Maltby D, Medzihradszky KF, Durkin KA, Cornejo-Bravo JM, Burlingame AL, Casida JE, Taylor P (2009)
Nicotinic agonist binding site mapped by methionine- and tyrosine-scanning coupled with azidochloropyridinyl photoaffinity labeling
Journal of Medicinal Chemistry
52 :3735
Tomizawa M, Talley TT, Park JF, Maltby D, Medzihradszky KF, Durkin KA, Cornejo-Bravo JM, Burlingame AL, Casida JE, Taylor P (2009)
Journal of Medicinal Chemistry
52 :3735