title: Rational design of SAM analogues targeting SAM-II riboswitch aptamer.
abstract: Riboswitches are noncoding RNA elements embedded in 5'-untranslated region of many bacterial mRNAs regulating gene expression in response to essential metabolites. They are unique from other RNA targets because they have evolved to form specific structural receptors for the purpose of binding small molecular metabolites suggesting that structure-based rational drug design approach may be used in designing metabolite mimics targeting riboswitches. We have developed a fluorescence binding assay for SAM-II riboswitch aptamer and identified an S-adenosylmethionine (SAM) analogue that selectively binds to SAM-II riboswitch aptamer with comparable binding affinity to its native metabolite using structure-based design approach.
authors.affiliation: Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA. yham@chem.byu.edu
authors.forename: Young Wan
authors.initials: YW
authors.lastname: Ham
authors.forename: Darin J
authors.initials: DJ
authors.lastname: Humphreys
authors.forename: Susie
authors.initials: S
authors.lastname: Choi
authors.forename: Daniel L
authors.initials: DL
authors.lastname: Dayton
mesh_terms: D018360:Crystallography, X-Ray; D015195:Drug Design; D015394:Molecular Structure; D012436:S-Adenosylmethionine / Q000031:analogs & derivatives* / Q000737:chemistry
chemical_list: D012436:S-Adenosylmethionine