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Department of Chemistry and Biochemistry

Publications

  • Q. Wang, M. Zhao, G. Parungao and R. E. Viola, Purification and Characterization of Aspartate N-acetyltransferase: A critical enzyme in brain metabolism, Prot. Expr. Purif. 119, 11-18 (2016).
  • Q. Q. Li, Z. X. Mu, R. Zhao, G. Dahal, R. E.Viola, T. Liu, Q. Jin and S. Cui, Structural Insights into the Tetrameric State of Aspartate-β-semialdehyde Dehydrogenases from Fungal Species, Nature Sci. Rep. 6, 21067 (2016).
  • G. Dahal and R. E. Viola, Structure of a fungal form of aspartate semialdehyde dehydrogenase from Cryptococcus neoformans, Acta Cryst. F71, 1365-1371 (2015). [PMID: 26527262].
  • B. Thangavelu, P. Bhansali, and R. E. Viola, Elaboration of a Fragment Library Hit Produces Potent and Selective Aspartate semialdehyde Dehydrogenase Inhibitors, Bioorg. Med. Chem. 23, 6622-6631 (2015).
  • M. Zhao, P. Bhansali, K. Niefer-Sadhwani, R. E. Viola and R. M. Blumenthal, A Surprising Range of S-Adenosyl-l-Methionine Analogs Support Bacterial Growth and Viability, Microbiology161, 674-682 (2015).
  • P. Wagh, G. Parungao, R. E. Viola and I. C. Escobar, A new technique to fabricate high-performance biologically inspired membranes for water treatment, Separ. Purif. Technol.156, 754-765 (2015).
  • A. G. Pavlovsky, B. Thangavelu, P. Bhansali and R. E. Viola, A Cautionary Tale of Structure-guided Inhibitor Development against an Essential Enzyme in the Aspartate Biosynthetic Pathway, Acta Cryst., D70, 3244-3252 (2014)
  • B. Thangavelu, A. G. Pavlovsky and R. E. Viola, Structure of homoserine O-acetyltransferase from Staphylococcus aureus: the first Gram-positive ortholog structure, Acta Cryst. F70, 000-000 (2014).
  • N. Poddar, S. Zano, R. Natarajan, B. Yamamoto and R. E. Viola, Enhanced Brain Distribution of Modified Aspartoacylase, Molec. Genet. Metabol. 113, 000-000 (2014).
  • Y. S. Wijayasinghe, R. M. Blumenthal and R. E. Viola, Producing Proficient Methyl Donors from Alternative Substrates of S-adenosylmethionine Synthetase, Biochemistry 53, 1521-1526 (2014).
  • S. Zano, A. G. Pavlovsky and R. E. Viola, Structure of an Unusual S-Adenosylmethionine Synthetase from Campylobacter jejuni, Acta Cryst. D70, 442-450 (2014).
  • Y. S. Wijayasinghe, A. G. Pavlovsky and R. E. Viola, Aspartoacylase Catalytic Deficiency as the Cause of Canavan Disease: A Structural Perspective, Biochemistry53, 4970-4978 (2014).
  • Q. Wang and R. E. Viola, Reexamination of Aspartoacylase: Is this Human Enzyme Really a Glycoprotein?, Arch. Biochem. Biophys. 548, 66-73 (2014).
  • S. Zano, Y. S. Wijayasinghe, R. Malik, J. Smith, and R. E. Viola, Relationship between Enzyme Properties and Disease Progression in Canavan Disease, J. Inher. Metab. Dis. 36, 1-6 (2013).
  • S. Zano, P. Bhansali, J. Smith and R. E. Viola, Alternative Substrates Selective for S-adenosylmethionine Synthetases from Pathogenic Bacteria, Arch. Biochem. Biophys. 536, 64-71 (2013).
  • A. Luniwal, L. Wang, A. G. Pavlovsky, P. W. Erhardt and R. E. Viola, Molecular Docking and Enzymatic Evaluation to Identify Selective Inhibitors of Aspartate Semialdehyde Dehydrogenase, Bioorg. Med. Chem. 20, 2950-2956 (2012).
  • A. G. Pavlovsky, X. Liu, C. R. Faehnle, N. Potente and R. E. Viola, Structural Characterization of Selective Enzyme Inhibitors Against Members of a Homologous Enzyme Family, Chem. Biol. Drug Design79, 128-136 (2012).
  • B. T. Arachea, Z. Sun, N. Potente, R. Malik, D. Isailovic and R. E. Viola, Detergent Selection for Enhanced Extraction of Membrane Proteins, Protein Express. Purif., 86, 12-20 (2012).
  • J. G. Sarver, J. A. Trendel, N. Bearss, L. Wang, A. Luniwal, P. W. Erhardt and R. E. Viola, Early Stage Efficacy and Toxicology Screening for Antibiotics and Enzyme Inhibitors, J. Biomolec. Screen. 17, 673-682 (2012).
  • A. S. Saribas, B. T. Arachea, M. K. White, R. E. Viola and M. Safak, Human polyomavirus JC small regulatory agnoprotein forms highly stable dimers and oligomers: Implications for their roles in agnoprotein function, Virology420, 51-65 (2011).
  • D. S. Tawfik and R. E. Viola, Arsenate replacing phosphate – alternative life chemistries and ion promiscuity, Biochemistry50, 1128-1134 (2011).
  • R. E. Viola, C. R. Faehnle, J. Blanco, R. A. Moore, X. Liu, B. T. Arachea and A. G. Pavlovsky, The Catalytic Machinery of a Key Enzyme in Amino Acid Biosynthesis, J. Amino Acids, vol. 2011, Article ID 352538, 11 pages, 2011. (invited review).
  • S. Zano, R. Malik, S. Szucs, R. Matalon, and R. E. Viola, Modification of Aspartoacylase for Potential Use in Enzyme Replacement Therapy for the Treatment of Canavan Disease, Molec. Genet. Metabol., 102, 176-180 (2011).
  • G. Gao, X. Liu, A. G. Pavlovsky, and R. E. Viola, Identification of Selective Enzyme Inhibitors by Fragment-library Screening, J. Biomolec. Screen., 15, 1042-1050 (2010).
  • R. Malik and R. E. Viola, Tartrate Dehydrogenase: a versatile enzyme catalyzing multiple reactions, Acta Cryst.D66, 673-684 (2010).
  • B. T. Arachea, X. Liu, A. G. Pavlovsky and R. E. Viola, Expansion of the Aspartate β-semialdehyde Dehydrogenase Family. The First Structure of a Fungal Ortholog, Acta. Cryst. D66, 205-212 (2010).
  • D. V. Camper and R. E. Viola, Fully Automated Protein Purification, Anal. Biochem. 393, 176-181 (2009).
  • S. W. Bearden, C. Sexton, J. Pare, J. M. Fowler, C. G. Arvidson, L. Yerman, R. E. Viola, and R. R. Brubaker, Attenuated Enzootic (Pestoides) Isolates of Yersinia pestis express Active Aspartase, Microbiology155, 198-209 (2009).
  • X. Liu, A. Pavlovsky, and R. E. Viola, The Structural Basis for Allosteric Inhibition of a Threonine-sensitive Aspartokinase, J. Biol. Chem. 283, 16216-16225 (2008).
  • R. E. Viola, L. Yerman, J. M. Fowler, C. G. Arvidson and R. R. Brubaker, A Missense Mutation Causes Aspartase deficiency in Yersinia pestis, Microbiology 154, 1271-1280 (2008).
  • J. Le Coq, A. Pavlovsky, R. Malik, R. Sanishvili, C. Xu, and R. E. Viola, Examination of the Mechanism of Human Brain Aspartoacylase through the Binding of an Intermediate Analog, Biochemistry 47, 3484-3492 (2008).
  • R. E. Viola, X. Liu, J. F. Ohren, and C. R. Faehnle, Structure of a redundant enzyme. The second isoform of Aspartate β-semialdehyde dehydrogenase from Vibrio cholerae, Acta. Cryst. D64, 321-330 (2008).
  • X. Liu, L. Hanson, P. Langan, and R. E. Viola, The Effect of Deuteration on Protein Structure. A High Resolution Comparison of Hydrogenous and Perdeuterated Haloalkane Dehalogenase, Acta Cryst D63, 1000-1008 (2007)
  • D. M. Coe and R. E. Viola, Assessing the Roles of Catalytic Functional Groups in the Mechanism of Homoserine Succinyltransferase, Arch. Biochem. Biophys. 461, 211-218 (2007).
  • J. F. Ohren, M. L. Kundracik, C. L. Borders, P. Edmiston, and R. E. Viola, Subunit Asymmetry and Communication in Muscle Creatine Kinase, Acta Cryst. D63, 381-389 (2007).
  • R. E. Viola, The Impact of Structural Biology on Neurobiology, Proc. Natl. Acad. Sci. USA 104, 399-400 (2007).
  • C. R. Faehnle, X. Liu, A. Pavlovsky, and R. E. Viola, The Initial Step in the Archael Aspartate Biosynthetic Pathway Catalyzed by a Monofunctional Aspartokinase, Acta Cryst. F62 , 962-966 (2006).
  • C. R. Faehnle, J. Le Coq, X. Liu, and R. E. Viola, Structural Complexes of the Anti-bacterial Target Aspartate-β-semialdehyde Dehydrogenase from Streptococcus pneumoniae, J. Biol. Chem. 281, 31031-31040 (2006).
  • J. Le Coq, H.-J. An, C. Lebrilla, and R. E. Viola, Characterization of Aspartoacylase: the Brain Enzyme Responsible for Canavan Disease, Biochemistry 45, 5878-5884 (2006).
  • Q. Liu, J. R. Kirchhoff, C. R. Faehnle, R. E. Viola, and R. A. Hudson, A Rapid Method for the Purification of Methanol Dehydrogenase from Methylobacterium extorquens, Prot. Express. Purif. 46, 316-320 (2006).
  • D. M. Colleluori, R. S. Reczknwski, F. A. Emig, E. Cama, J. D. Cox, L. R. Scolnick, K. Compher, K. Jude, S. Han, R. E. Viola, D. W. Christianson, and D. E. Ash, Probing the Role of the Hyper-Reactive Histidine Residue of Arginase, Arch. Biochem. Biophys. 444, 15-26 (2005).
  • C. R. Faehnle, J. F. Ohren, and R. E. Viola, A New Branch in the Family. Structure of Aspartate β-semialdehyde Dehydrogenase from Methanococcus jannaschii, J. Molec. Biol. 353, 1055-1068 (2005).
  • C. R. Faehnle, J. Blanco, and R. E. Viola, Structural Basis for Discrimination Between Oxyanion Substrates or Inhibitors in Aspartate-β-semialdehyde Dehydrogenase, Acta. Cryst.D60, 2320-2324 (2004).
  • J. Blanco, R. A. Moore, C. R. Faehnle, and R. E. Viola, Critical Catalytic Functional Groups in the Mechanism of Aspartate-β-semialdehyde Dehydrogenase, Acta. Cryst.D60, 1808-1815 (2004).
  • E. Cama, S. Pethe, J.-L. Boucher, S. Han, F. A. Emig, D. E. Ash, R. E. Viola, D. Mansuy, and D. W. Christianson, Inhibitor Coordination Interactions in the Binuclear Manganese Cluster of Arginase, Biochemistry43, 8987-8999 (2004).
  • J. Blanco, R. A. Moore, C. R. Faehnle, D. M. Coe, and R. E. Viola, The Role of Substrate Binding Groups in the Mechanism of Aspartate-β-semialdehyde Dehydrogenase, Acta Cryst.D60, 1388-1395 (2004).
  • C. N. Madhavarao, J. R. Moffett, R. A. Moore, R. E. Viola, M. A. A. Namboodiri, and D. M. Jacobowitz, Immunohistochemical Localization of Aspartoacylase in the Rat Central Nervous System, J. Compar. Neurol.472, 318-329 (2004).
  • S. Han and R. E. Viola, Splicing of Unnatural Amino Acids into Proteins:?A Peptide Model Study, Prot. Pept. Lett.11, 107-114 (2004).
  • I. Elder, S. Han, C. K. Tu, H. Steele, P. J. Laipis, R. E. Viola, and D. N. Silverman, Activation of Carbonic Anhydrase II by Active-Site Incorporation of Histidine Analogs, Arch. Biochem. Biophys., 421, 283-289 (2004).
  • J. Blanco, R. A. Moore, and R. E. Viola, Capture of an Intermediate in the Catalytic Cycle of L-Aspartate-β-semialdehyde Dehydrogenase, Proc. Natl. Acad. Sci. USA100, 12613-12617 (2003).
  • S. Han, R. A. Moore, and R. E. Viola, A Facile Synthesis of a Difluoromethylene Analog of β-Aspartyl Phosphate as an Inhibitor of L-Aspartate-β-Semialdehyde Dehydrogenases, SynLett., 845-846 (2003).
  • R. A. Moore, C. R. Faehnle, J. LeCoq, and R. E. Viola, Purification and Preliminary Characterization of Brain Aspartoacylase, Arch. Biochem. Biophys.413, 1-8 (2003).
  • J. Blanco, R. A. Moore, V. Kabaleeswaram, and R. E. Viola, A Structural Basis for the Mechanism of Aspartate-β-semialdehyde Dehydrogenase from Vibrio Cholerae, Protein Sci .12, 27-33 (2003).
  • R. A. Moore, W. A. Bocik, and R. E. Viola, Expression and Purification of L-Aspartate-β-semialdehyde dehydrogenase from Infectious Microorganisms, Prot. Express. Purif . 25, 189-194 (2002).
  • C. L. James and R. E. Viola, Production and Characterization of Bifunctional Enzymes.?Substrate Channeling in the Aspartate Pathway, Biochemistry41, 3726-3731 (2002).
  • C. L. James and R. E. Viola, Production and Characterization of Bifunctional Enzymes.?Domain Swapping to Produce New Bifunctional Enzymes in the Aspartate Pathway, Biochemistry41, 3720-3725 (2002).
  • S. Han, R. A. Moore, and R. E. Viola, Synthesis and Evaluation of Alternative Substrates for Arginase, Bioorg. Chem.30, 81-94 (2002).
  • K. M. Jude, S. K. Wright, C. K. Tu, D. N. Silverman, R. E. Viola, and D. W. Christianson, Crystal Structure of F65A/Y131C-methylimidazole Carbonic Anhydrase V Reveals Architectural Features of an Engineered Proton Shuttle, Biochemistry41, 2485-2491 (2002).
  • J. Blanco and R. E. Viola, Purification, crystallization and preliminary X-ray analysis of aspartokinase III from Escherichia coli, Acta Cryst.D58, 352-354 (2002).
  • A. Hadfield, C. Shammes, G. Kryger, D. Ringe, G. Petsko, J. Ouyang, and R. E. Viola, Active site analysis of the potential anti-microbial target Aspartate semialdehyde dehydrogenase, Biochemistry40, 14475-14483 (2001).
  • S. Han and R. E. Viola, A Spectrophotometric Assay of Arginase, Anal. Biochem.295, 117-119 (2001).
  • J. K. Bell, H. Yennawar, S. K. Wright, R. E. Viola, and L. J. Banaszak, Structural Analysis of a Malate Dehydrogenase with a Variable Active Site, J. Biol. Chem.276, 31156-31162 (2001).
  • S. K. Wright and R. E. Viola, Alteration of the Specificity of Malate Dehydrogenase by Chemical Modulation of an Active Site Arginine, J. Biol. Chem.276, 31151-31155 (2001).
  • R. E. Viola, The Central Enzymes of the Aspartate Pathway of Amino Acid Biosynthesis, Acc. Chem. Res.34, 339-349 (2001).
  • Wright, S.K.; Kish, M.M.; Viola, R.E., From Malate Dehydrogenase to Phenyllactate Dehydrogenase: Incorporation of Unnatural Amino Acids to Generate an Improved Enzyme-Catalyzed Activity, J. Biol. Chem. , in press (2000).
  • Viola, R.E. "L-Aspartase: New Tricks from an Old Enzyme", in Adv. Enzymol., Mechanism of Enzyme Action, Vol. 74, Part B, (D. Purich, ed.), 2000, pp. 295-341, Academic Press, San Diego, CA.
Last Updated: 6/27/22