@article{gaballah_vaught_eaton_netzel_2005, title={Charge-transfer excited state dynamics in DNA hairpins substituted with an ethylenylpyrenyl-dU electron source and halo-dU traps}, volume={109}, number={12}, journal={Journal of Physical Chemistry. B, Condensed Matter, Materials, Surfaces, Interfaces & Biophysical}, author={Gaballah, S. T. and Vaught, J. D. and Eaton, B. E. and Netzel, T. L.}, year={2005}, pages={5927–5934} } @article{gugliotti_feldheim_eaton_2004, title={RNA-mediated metal-metal bond formation in the synthesis of hexagonal palladium nanoparticles}, volume={304}, ISSN={["1095-9203"]}, DOI={10.1126/science.1095678}, abstractNote={RNA sequences have been discovered that mediate the growth of hexagonal palladium nanoparticles. In vitro selection techniques were used to evolve an initial library of ∼1014 unique RNA sequences through eight cycles of selection to yield several active sequence families. Of the five families, all representative members could form crystalline hexagonal palladium platelets. The palladium particle growth occurred in aqueous solution at ambient temperature, without any endogenous reducing agent, and at low concentrations of metal precursor (100 micromolar). Relative to metal precursor, the RNA concentration was significantly lower (1 micromolar), yet micrometer-size crystalline hexagonal palladium particles were formed rapidly (7.5 to 1 minutes).}, number={5672}, journal={SCIENCE}, author={Gugliotti, LA and Feldheim, DL and Eaton, BE}, year={2004}, month={May}, pages={850–852} } @article{vaught_dewey_eaton_2004, title={T7 RNA polymerase transcription with 5-position modified UTP derivatives}, volume={126}, ISSN={["0002-7863"]}, DOI={10.1021/ja049009h}, abstractNote={Seven UTP derivatives modified at the 5-position through an amide linkage were tested as substrates for T7 RNA polymerase (T7 RNAP) transcription. All UTP derivatives gave good yields of full-length transcript even from DNA templates that showed a significant number of abortive transcripts using unmodified UTP. A kinetic assay to determine the relative K(m) and V(max) for T7 RNAP transcription gave surprisingly similar values for UTP and the 5-position hydrophobic modifications phenyl, 4-pyridyl, 2-pyridyl, indolyl, and isobutyl. The 5-position modifications imidazole and amino, which could both be positively charged, gave K(m) values significantly higher than UTP. All seven UTP derivatives gave relative V(max) values similar to UTP, indicating that insertion of these modified bases into the transcript did not impede its elongation.}, number={36}, journal={JOURNAL OF THE AMERICAN CHEMICAL SOCIETY}, author={Vaught, JD and Dewey, T and Eaton, BE}, year={2004}, month={Sep}, pages={11231–11237} } @article{tarasow_kellogg_holley_nieuwlandt_tarasow_eaton_2004, title={The effect of mutation on RNA Diels-Alderases}, volume={126}, ISSN={["0002-7863"]}, DOI={10.1021/ja0494149}, abstractNote={Chemical mutagenesis of a previously reported RNA Diels-Alderase (DA22) was followed by in vitro selection based on [4 + 2] catalysis. New mutated families of RNA Diels-Alderases closely related in sequence space were obtained. The mutated Diels-Alderases selected showed significant improvements in catalytic efficiency (k(cat)/K(m)) as compared to the original DA22. The improvement in catalytic activity was primarily due to a decrease in K(m), but modest increases in k(cat) were also observed. The increase in catalytic activity of these new Diels-Alderases was found not to negatively affect their dienophile specificity. Surprisingly, one of the most active Diels-Alderases (DAM 40), a subtle sequence mutant of DA22, was found to show a new metal dependence and could function with Ni(2+) as the only transition-metal ion. Truncation experiments of DA22 showed that the region shown to be hypervariable at the 3'-end of the structure could be deleted without a significant decrease in the relative rate of Diels-Alder catalysis.}, number={38}, journal={JOURNAL OF THE AMERICAN CHEMICAL SOCIETY}, author={Tarasow, TM and Kellogg, E and Holley, BL and Nieuwlandt, D and Tarasow, SL and Eaton, BE}, year={2004}, month={Sep}, pages={11843–11851} } @article{nieuwlandt_west_cheng_kirshenheuter_eaton_2003, title={The first example of an RNA urea synthase: Selection through the enzyme active site of human neutrophile elastase}, volume={4}, ISSN={["1439-7633"]}, DOI={10.1002/cbic.200300610}, abstractNote={RNA catalysts: In vitro selection from a random library of RNA sequences gave RNA urea synthases able to utilize tripeptides as substrates (see scheme; HNE, human neutrophile elastase). The tripeptide substrates were mechanism-based protease suicide substrates. Stereoselection of serine protease tripeptide phosphonate inhibitors was achieved by RNA catalysis. The RNA urea synthases showed a high degree of diastereoselectivity for the most potent protease suicide inhibitor. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2268/2003/z610_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.}, number={7}, journal={CHEMBIOCHEM}, author={Nieuwlandt, D and West, M and Cheng, XQ and Kirshenheuter, G and Eaton, BE}, year={2003}, month={Jul}, pages={651–654} } @article{gaballah_kerr_eaton_netzel_2002, title={Synthesis of 5-(2,2 '-bipyridinyl and 2,2 '-bipyridinediiumyl)-2 '-deoxyuridine nucleosides: Precursors to metallo-DNA conjugates}, volume={21}, ISSN={["1532-2335"]}, DOI={10.1081/NCN-120015068}, abstractNote={ABSTRACT The synthesis of 2,2′-bipyridinyl-2′-deoxyuridine metal-chelator nucleosides (Bipy-dU) with either ethynyl or ethylenyl linkers was now been accomplished. These new nucleosides will permit the construction of a number of corresponding metallo-DNA conjugates where many types of metals can be complexed to the 2,2′-bipyridinyl chelator group and the resulting metallo-dU conjugates incorporated into DNA oligonucleotides. Additionally this paper also reports the synthesis of a di-N-alkylated bipyridinediiumyl-2′-deoxyuridine nucleoside (Bipy2+-dU) with an ethylenyl linker. The Bipy2+-dU nucleoside was found to decompose under basic conditions precluding its use in standard automated DNA-synthesis by the phosphoramidite method. No such restrictions apply to the two Bipy-dU nucleosides reported here for use as metal chelators.}, number={8-9}, journal={NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS}, author={Gaballah, ST and Kerr, CE and Eaton, BE and Netzel, TL}, year={2002}, pages={547–560} } @article{fatland_eaton_2000, title={Cobalt-catalyzed alkyne-nitrile cyclotrimerization to form pyridines in aqueous solution}, volume={2}, ISSN={["1523-7060"]}, DOI={10.1021/ol006327m}, abstractNote={A new, water-soluble cobalt(I) catalyst has been used in the aqueous, chemospecific, cyclotrimerization of one nitrile with two alkynes for the synthesis of highly functionalized pyridines. Several different functional groups are well incorporated in this transformation, including unprotected alcohols, ketones, and amines. Double isotopic crossover data, as well as nitrile dependence on the rate of product formation, suggest associative rate-determining coordination of the nitrile.}, number={20}, journal={ORGANIC LETTERS}, author={Fatland, AW and Eaton, BE}, year={2000}, month={Oct}, pages={3131–3133} }