2014
Two Amino Acid Residues Confer Different Binding Affinities of Abelson Family Kinase Src Homology 2 Domains for Phosphorylated Cortactin*
Gifford SM, Liu W, Mader CC, Halo TL, Machida K, Boggon TJ, Koleske AJ. Two Amino Acid Residues Confer Different Binding Affinities of Abelson Family Kinase Src Homology 2 Domains for Phosphorylated Cortactin*. Journal Of Biological Chemistry 2014, 289: 19704-19713. PMID: 24891505, PMCID: PMC4094080, DOI: 10.1074/jbc.m114.556480.Peer-Reviewed Original ResearchConceptsAbl SH2 domainSH2 domainAbl family kinasesFamily kinasesSrc homology 2 domainCell edge protrusionAbl SH2Similar N-terminal sequencesImportant non-redundant rolesWild-type levelsAmino acid sequenceAmino acid positionsN-terminal sequenceNon-redundant roleCell morphogenesisArg substrateCellular functionsSpecific phosphotyrosineCell peripheryAcid sequenceSerine 187Edge protrusionTarget proteinsType levelsDifferent binding affinities
2012
Arg/Abl2 Modulates the Affinity and Stoichiometry of Binding of Cortactin to F‑Actin
MacGrath SM, Koleske AJ. Arg/Abl2 Modulates the Affinity and Stoichiometry of Binding of Cortactin to F‑Actin. Biochemistry 2012, 51: 6644-6653. PMID: 22849492, PMCID: PMC3556572, DOI: 10.1021/bi300722t.Peer-Reviewed Original ResearchConceptsStoichiometry of bindingF-actinTerminal calponin homology domainRecruitment of cortactinActin cosedimentation assaysArp2/3 complex activatorsCell edge protrusionActin network assemblyCalponin homology domainProtein-protein interactionsCortactin bindsHomology domainActin cytoskeletonArg CDeletion mutantsCosedimentation assaysFilamentous actinEdge protrusionComplex activatorActin binding propertiesCortactinActin filamentsNetwork assemblyDownstream effectsBinding
2010
The Abl and Arg non‐receptor tyrosine kinases regulate different zones of stress fiber, focal adhesion, and contractile network localization in spreading fibroblasts
Peacock JG, Couch BA, Koleske AJ. The Abl and Arg non‐receptor tyrosine kinases regulate different zones of stress fiber, focal adhesion, and contractile network localization in spreading fibroblasts. Cytoskeleton 2010, 67: 666-675. PMID: 20737438, PMCID: PMC2955401, DOI: 10.1002/cm.20479.Peer-Reviewed Original ResearchConceptsCell peripheryPhosphorylated myosin light chainFocal adhesionsActomyosin contractilitySpatial regulationFocal adhesion dynamicsNon-receptor tyrosine kinaseAbl functionAdhesion dynamicsMutant cellsAbl familyFA formationStress fibersEdge protrusionMyosin light chainF-actinTyrosine kinaseRhoA activityInhibitory complexWT cellsArg functionAdhesive structuresCell migrationAdhesion elementsP120Regulation of Actin Polymerization and Adhesion-Dependent Cell Edge Protrusion by the Abl-Related Gene (Arg) Tyrosine Kinase and N-WASp
Miller MM, Lapetina S, MacGrath SM, Sfakianos MK, Pollard TD, Koleske AJ. Regulation of Actin Polymerization and Adhesion-Dependent Cell Edge Protrusion by the Abl-Related Gene (Arg) Tyrosine Kinase and N-WASp. Biochemistry 2010, 49: 2227-2234. PMID: 20146487, PMCID: PMC2836179, DOI: 10.1021/bi901721u.Peer-Reviewed Original ResearchConceptsCell edge protrusionN-WASPActin polymerizationEdge protrusionN-WASP-dependent actin polymerizationGene Tyrosine KinaseFluorescent protein fusionsNovel binding partnerExtracellular cuesProtein fusionsSH2 domainExtracellular stimuliActin cytoskeletonSH3 domainBinding partnerCellular protrusionsPoint mutantsAffinity purificationTyrosine kinasePhysical interactionSH3PhosphorylationArgABLPotential link
2009
Arg interacts with cortactin to promote adhesion-dependent cell edge protrusion
Lapetina S, Mader CC, Machida K, Mayer BJ, Koleske AJ. Arg interacts with cortactin to promote adhesion-dependent cell edge protrusion. Journal Of Cell Biology 2009, 185: 503-519. PMID: 19414610, PMCID: PMC2700396, DOI: 10.1083/jcb.200809085.Peer-Reviewed Original ResearchConceptsCell edge protrusionEdge protrusionActin polymerization machineryAdhesion-dependent phosphorylationCell-matrix adhesionPro-rich motifMutation of residuesPolymerization machinerySH2 domainDomain bindsC-terminusCortactinMolecular mechanismsGene kinaseSimilar defectsAdditional binding sitesCatalytic eventsBinding sitesArgInteractsFibroblast adhesionProtrusionNck1KinasePhosphorylation