2000
Thymosin-β4 Changes the Conformation and Dynamics of Actin Monomers
De La Cruz E, Ostap E, Brundage R, Reddy K, Sweeney H, Safer D. Thymosin-β4 Changes the Conformation and Dynamics of Actin Monomers. Biophysical Journal 2000, 78: 2516-2527. PMID: 10777749, PMCID: PMC1300842, DOI: 10.1016/s0006-3495(00)76797-x.Peer-Reviewed Original ResearchMeSH KeywordsActinsAnimalsBinding SitesBiophysical PhenomenaBiophysicsCircular DichroismCross-Linking ReagentsFluorescent DyesHumansIn Vitro TechniquesKineticsMacromolecular SubstancesModels, MolecularMuscle, SkeletalMutagenesis, Site-DirectedNaphthalenesulfonatesOsmotic PressureProtein BindingProtein ConformationRabbitsRecombinant ProteinsThermodynamicsThymosinTritiumViscosityConceptsActin monomersActin monomer poolMgATP-actinMetazoan cellsNucleotide exchangeC-terminusSubdomain 2Conformational changesMonomer poolN-iodoacetyl-N'Cleavage siteActinThymosin β4Rate of dissociationAmide protonsSulfo-1Unique abilityBindingStructural dynamicsConformationTerminusNucleotidesProteolysisDifferent stabilitiesDegrees C
1998
Interactions of Acanthamoeba Profilin with Actin and Nucleotides Bound to Actin †
Vinson V, De La Cruz E, Higgs H, Pollard T. Interactions of Acanthamoeba Profilin with Actin and Nucleotides Bound to Actin †. Biochemistry 1998, 37: 10871-10880. PMID: 9692980, DOI: 10.1021/bi980093l.Peer-Reviewed Original ResearchConceptsMg-ATPAcanthamoeba profilinMg-ADPExchange of ADPRabbit skeletal muscle actinAffinity of profilinSkeletal muscle actinFree barbed endsProfilin bindingSerine 38Nucleotide exchangeBarbed endsCysteine 374Actin monomersProfilinMuscle actinActinUnique siteIntrinsic fluorescenceFluorescence anisotropyATP-actinSubunit/Free actinSame affinityATP