2020
Crystal structure of a guanine nucleotide exchange factor encoded by the scrub typhus pathogen Orientia tsutsugamushi
Lim C, Berk JM, Blaise A, Bircher J, Koleske AJ, Hochstrasser M, Xiong Y. Crystal structure of a guanine nucleotide exchange factor encoded by the scrub typhus pathogen Orientia tsutsugamushi. Proceedings Of The National Academy Of Sciences Of The United States Of America 2020, 117: 30380-30390. PMID: 33184172, PMCID: PMC7720168, DOI: 10.1073/pnas.2018163117.Peer-Reviewed Original ResearchConceptsBacterial GEFStructure-guided mutational analysisExchange factor domainRho family GTPasesObvious sequence similarityRho GTPases Rac1Pathogen Orientia tsutsugamushiAlters cell morphologyInteraction screenConvergent evolutionGEF domainHost interactorsExchange factorNucleotide displacementGEF activityCellular processesSequence similarityCytoskeletal structuresGTPases Rac1Ectopic expressionMutational analysisGEFRac1Factor domainPathogenic bacterium
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
Lysozyme contamination facilitates crystallization of a heterotrimeric cortactin–Arg–lysozyme complex
Liu W, MacGrath SM, Koleske AJ, Boggon TJ. Lysozyme contamination facilitates crystallization of a heterotrimeric cortactin–Arg–lysozyme complex. Acta Crystallographica Section F: Structural Biology Communications 2012, 68: 154-158. PMID: 22297987, PMCID: PMC3274391, DOI: 10.1107/s1744309111056132.Peer-Reviewed Original ResearchConceptsCrystal structure determinationNonreceptor tyrosine kinaseArg nonreceptor tyrosine kinaseHeterotrimeric complexSH3 domainMacromolecular crystallographersCrystallography approachStructure determinationTyrosine kinaseCocrystal structureMolecular replacementTrace amountsLysozyme complexStructure solutionProteinCortactinComplexesCrystallizationCrystallographersCocrystalsKinaseMotifAutomatic model buildingSequenceArg