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Kayunta Johnson-Winters, Ph.D. - Publications

Affiliations: 
2006 University of Wisconsin-Milwaukee, Milwaukee, WI 
Area:
Biochemistry
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22 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2017 Le CQ, Oyugi M, Joseph E, Nguyen T, Ullah MH, Aubert J, Phan T, Tran J, Johnson-Winters K. Effects of isoleucine 135 side chain length on the cofactor donor-acceptor distance within F420H2:NADP(+) oxidoreductase: A kinetic analysis. Biochemistry and Biophysics Reports. 9: 114-120. PMID 28955995 DOI: 10.1016/J.Bbrep.2016.11.012  0.474
2017 Oyugi MA, Bashiri G, Baker EN, Johnson-Winters K. Mechanistic insights into F420-dependent glucose-6-phosphate dehydrogenase using isotope effects and substrate inhibition studies. Biochimica Et Biophysica Acta. PMID 28807886 DOI: 10.1016/J.Bbapap.2017.08.001  0.403
2016 Oyugi MA, Bashiri G, Baker EN, Johnson-Winters KL. Investigating the reaction mechanism of F420-dependent glucose-6-phosphate dehydrogenase from Mycobacterium tuberculosis: kinetic analysis of the wild-type and mutant enzymes. Biochemistry. PMID 27603793 DOI: 10.1021/Acs.Biochem.6B00638  0.448
2016 Joseph E, Le CQ, Nguyen TQ, Hossain MS, Oyugi MA, Foss FW, Johnson-Winters KL. Evidence of negative cooperativity and half-site reactivity within an F420-dependent enzyme: A kinetic analysis of F420H2:NADP+ oxidoreductase. Biochemistry. PMID 26811861 DOI: 10.1021/Acs.Biochem.5B00762  0.462
2015 Le CQ, Joseph E, Nguyen T, Johnson-Winters K. Optimization of Expression and Purification of Recombinant Archeoglobus fulgidus F420H2:NADP(+) Oxidoreductase, an F420 Cofactor Dependent Enzyme. The Protein Journal. PMID 26493287 DOI: 10.1007/S10930-015-9633-Y  0.317
2015 Hossain MS, Le CQ, Joseph E, Nguyen TQ, Johnson-Winters K, Foss FW. Convenient synthesis of deazaflavin cofactor FO and its activity in F(420)-dependent NADP reductase. Organic & Biomolecular Chemistry. 13: 5082-5. PMID 25827330 DOI: 10.1039/C5Ob00365B  0.311
2014 Davis AC, Johnson-Winters K, Arnold AR, Tollin G, Enemark JH. Kinetic results for mutations of conserved residues H304 and R309 of human sulfite oxidase point to mechanistic complexities. Metallomics : Integrated Biometal Science. 6: 1664-70. PMID 24968320 DOI: 10.1039/C4Mt00099D  0.376
2013 Johnson-Winters K, Davis AC, Arnold AR, Berry RE, Tollin G, Enemark JH. Probing the role of a conserved salt bridge in the intramolecular electron transfer kinetics of human sulfite oxidase. Journal of Biological Inorganic Chemistry : Jbic : a Publication of the Society of Biological Inorganic Chemistry. 18: 645-53. PMID 23779234 DOI: 10.1007/S00775-013-1010-8  0.458
2012 Astashkin AV, Rajapakshe A, Cornelison MJ, Johnson-Winters K, Enemark JH. Determination of the distance between the Mo(V) and Fe(III) heme centers of wild type human sulfite oxidase by pulsed EPR spectroscopy. The Journal of Physical Chemistry. B. 116: 1942-50. PMID 22229742 DOI: 10.1021/Jp210578F  0.378
2012 Klein EL, Raitsimring AM, Astashkin AV, Rajapakshe A, Johnson-Winters K, Arnold AR, Potapov A, Goldfarb D, Enemark JH. Identity of the exchangeable sulfur-containing ligand at the Mo(V) center of R160Q human sulfite oxidase. Inorganic Chemistry. 51: 1408-18. PMID 22225516 DOI: 10.1021/Ic201643T  0.424
2010 Johnson-Winters K, Nordstrom AR, Davis AC, Tollin G, Enemark JH. Effects of large-scale amino acid substitution in the polypeptide tether connecting the heme and molybdenum domains on catalysis in human sulfite oxidase. Metallomics : Integrated Biometal Science. 2: 766-70. PMID 21072368 DOI: 10.1039/C0Mt00021C  0.442
2010 Johnson-Winters K, Tollin G, Enemark JH. Elucidating the catalytic mechanism of sulfite oxidizing enzymes using structural, spectroscopic, and kinetic analyses. Biochemistry. 49: 7242-54. PMID 20666399 DOI: 10.1021/Bi1008485  0.458
2010 Rajapakshe A, Johnson-Winters K, Nordstrom AR, Meyers KT, Emesh S, Astashkin AV, Enemark JH. Characterization of chloride-depleted human sulfite oxidase by electron paramagnetic resonance spectroscopy: experimental evidence for the role of anions in product release. Biochemistry. 49: 5154-9. PMID 20491442 DOI: 10.1021/Bi902172N  0.374
2010 Rapson TD, Astashkin AV, Johnson-Winters K, Bernhardt PV, Kappler U, Raitsimring AM, Enemark JH. Pulsed EPR investigations of the Mo(V) centers of the R55Q and R55M variants of sulfite dehydrogenase from Starkeya novella. Journal of Biological Inorganic Chemistry : Jbic : a Publication of the Society of Biological Inorganic Chemistry. 15: 505-14. PMID 20084533 DOI: 10.1007/S00775-009-0619-0  0.425
2010 Johnson-Winters K, Nordstrom AR, Emesh S, Astashkin AV, Rajapakshe A, Berry RE, Tollin G, Enemark JH. Effects of interdomain tether length and flexibility on the kinetics of intramolecular electron transfer in human sulfite oxidase. Biochemistry. 49: 1290-6. PMID 20063894 DOI: 10.1021/Bi9020296  0.491
2009 Astashkin AV, Klein EL, Ganyushin D, Johnson-Winters K, Neese F, Kappler U, Enemark JH. Exchangeable oxygens in the vicinity of the molybdenum center of the high-pH form of sulfite oxidase and sulfite dehydrogenase. Physical Chemistry Chemical Physics : Pccp. 11: 6733-42. PMID 19639147 DOI: 10.1039/B907029J  0.444
2009 Klein EL, Astashkin AV, Ganyushin D, Riplinger C, Johnson-Winters K, Neese F, Enemark JH. Direct detection and characterization of chloride in the active site of the low-pH form of sulfite oxidase using electron spin echo envelope modulation spectroscopy, isotopic labeling, and density functional theory calculations. Inorganic Chemistry. 48: 4743-52. PMID 19402624 DOI: 10.1021/Ic801787S  0.366
2009 Bailey S, Rapson T, Johnson-Winters K, Astashkin AV, Enemark JH, Kappler U. Molecular basis for enzymatic sulfite oxidation: how three conserved active site residues shape enzyme activity. The Journal of Biological Chemistry. 284: 2053-63. PMID 19004819 DOI: 10.1074/Jbc.M807718200  0.525
2008 Astashkin AV, Johnson-Winters K, Klein EL, Feng C, Wilson HL, Rajagopalan KV, Raitsimring AM, Enemark JH. Structural studies of the molybdenum center of the pathogenic R160Q mutant of human sulfite oxidase by pulsed EPR spectroscopy and 17O and 33S labeling. Journal of the American Chemical Society. 130: 8471-80. PMID 18529001 DOI: 10.1021/Ja801406F  0.374
2005 Johnson-Winters K, Purpero VM, Kavana M, Moran GR. Accumulation of multiple intermediates in the catalytic cycle of (4-hydroxyphenyl)pyruvate dioxygenase from Streptomyces avermitilis. Biochemistry. 44: 7189-99. PMID 15882057 DOI: 10.1021/Bi047625K  0.589
2004 Brownlee JM, Johnson-Winters K, Harrison DH, Moran GR. Structure of the ferrous form of (4-hydroxyphenyl)pyruvate dioxygenase from Streptomyces avermitilis in complex with the therapeutic herbicide, NTBC. Biochemistry. 43: 6370-7. PMID 15157070 DOI: 10.1021/Bi049317S  0.637
2003 Johnson-Winters K, Purpero VM, Kavana M, Nelson T, Moran GR. (4-Hydroxyphenyl)pyruvate dioxygenase from Streptomyces avermitilis: the basis for ordered substrate addition. Biochemistry. 42: 2072-80. PMID 12590595 DOI: 10.1021/Bi026499M  0.593
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