2004
Regulatory modules that generate biphasic signal response in biological systems.
Levchenko A, Bruck J, Sternberg P. Regulatory modules that generate biphasic signal response in biological systems. IET Systems Biology 2004, 1: 139-48. PMID: 17052124, DOI: 10.1049/sb:20045014.Peer-Reviewed Original Research
2002
Models of Eukaryotic Gradient Sensing: Application to Chemotaxis of Amoebae and Neutrophils
Levchenko A, Iglesias P. Models of Eukaryotic Gradient Sensing: Application to Chemotaxis of Amoebae and Neutrophils. Biophysical Journal 2002, 82: 50-63. PMID: 11751295, PMCID: PMC1302448, DOI: 10.1016/s0006-3495(02)75373-3.Peer-Reviewed Original ResearchConceptsPersistent signalingBiochemical signal transduction pathwaysSmall G proteinsChemotaxis of amoebaeSignal transduction pathwaysG protein activationEukaryotic cellsGradient sensingEukaryotic gradient sensingG proteinsCell typesSignal gradientExquisite precisionChemoattractant gradientPerfect adaptationSignalingAmoebaeActivatorPositive feedbackSensory systemsContinuous presenceAdaptationShallow gradientsChemoattractantInactivator
2000
Scaffold proteins may biphasically affect the levels of mitogen-activated protein kinase signaling and reduce its threshold properties
Levchenko A, Bruck J, Sternberg P. Scaffold proteins may biphasically affect the levels of mitogen-activated protein kinase signaling and reduce its threshold properties. Proceedings Of The National Academy Of Sciences Of The United States Of America 2000, 97: 5818-5823. PMID: 10823939, PMCID: PMC18517, DOI: 10.1073/pnas.97.11.5818.Peer-Reviewed Original ResearchConceptsMitogen-activated protein kinaseScaffold proteinProtein kinaseSpecific cellular contextDifferent subcellular compartmentsDetailed biochemical modelCellular contextSignal transductionSubcellular compartmentsScaffold concentrationsScaffold levelMultimolecular complexesFull activationGeneric scaffoldKinaseProteinBiochemical modelPathwaySignal propagationTransductionComplexesQuantitative computer modelCrosstalkCompartmentsActivation