2024
A salt bridge of the C‐terminal carboxyl group regulates PHPT1 substrate affinity and catalytic activity
Zavala E, Dansereau S, Burke M, Lipchock J, Maschietto F, Batista V, Loria J. A salt bridge of the C‐terminal carboxyl group regulates PHPT1 substrate affinity and catalytic activity. Protein Science 2024, 33: e5009. PMID: 38747379, PMCID: PMC11094782, DOI: 10.1002/pro.5009.Peer-Reviewed Original ResearchConceptsCatalytic activityPhenylphosphonic acidAnalysis of molecular dynamics trajectoriesNMR chemical shiftsSalt bridgesMolecular dynamics trajectoriesC-terminal carboxyl groupChemical shiftsCombination of solution NMRMolecular dynamicsGuanidinium moietyCarboxyl groupsPara-nitrophenylphosphateSolution NMRActive site inhibitorsHistidine phosphataseActive siteElectrostatic interactionsDynamics trajectoriesEnzymatic functionC-terminusGlycine residuesSubstrate affinityBiochemical experimentsBinding affinity
2021
A structurally preserved allosteric site in the MIF superfamily affects enzymatic activity and CD74 activation in D-dopachrome tautomerase
Chen E, Reiss K, Shah D, Manjula R, Allen B, Murphy EL, Murphy JW, Batista VS, Bhandari V, Lolis EJ, Lisi GP. A structurally preserved allosteric site in the MIF superfamily affects enzymatic activity and CD74 activation in D-dopachrome tautomerase. Journal Of Biological Chemistry 2021, 297: 101061. PMID: 34384784, PMCID: PMC8405996, DOI: 10.1016/j.jbc.2021.101061.Peer-Reviewed Original ResearchMeSH KeywordsAllosteric SiteAmino Acid SequenceAntigens, Differentiation, B-LymphocyteBinding SitesCatalytic DomainCrystallography, X-RayCytokinesHistocompatibility Antigens Class IIHumansIntramolecular OxidoreductasesMacrophage Migration-Inhibitory FactorsProtein BindingStructure-Activity RelationshipConceptsAllosteric siteDopachrome tautomeraseDynamic regulatory networksEnzymatic activityLow sequence identityLigand-binding siteMultiple ligand-binding sitesNonoverlapping functionsRegulatory networksAllosteric couplingMacrophage migration inhibitory factor (MIF) familyFactor familySequence identityHomolog DStructural basisPrimary sequenceCD74 activationFunctional similarityConformational changesSolution NMRMIF-2X-ray crystallographyCatalytic siteStructural consequencesSolvent channels
2012
The Active Site of Melanopsin: The Biological Clock Photoreceptor
Sekharan S, Wei J, Batista V. The Active Site of Melanopsin: The Biological Clock Photoreceptor. Journal Of The American Chemical Society 2012, 134: 19536-19539. PMID: 23145979, DOI: 10.1021/ja308763b.Peer-Reviewed Original Research