2023
The release of inhibition model reproduces kinetics and plasticity of neurotransmitter release in central synapses
Norman C, Krishnakumar S, Timofeeva Y, Volynski K. The release of inhibition model reproduces kinetics and plasticity of neurotransmitter release in central synapses. Communications Biology 2023, 6: 1091. PMID: 37891212, PMCID: PMC10611806, DOI: 10.1038/s42003-023-05445-2.Peer-Reviewed Original ResearchConceptsFusion clampSV exocytosisSynaptic vesiclesNeurotransmitter releaseSNARE complexSNARE proteinsSV fusionPhysiological timescalesSynaptotagmin-1Synergistic regulationMolecular biochemistryComplete assemblyPresynaptic proteinsSynaptotagmin-7Molecular architectureCalcium bindingExocytosisDual bindingProteinCentral synapsesBindingPlasticitySynaptotagminSnareVesicles
2017
Mutations in Membrin/GOSR2 Reveal Stringent Secretory Pathway Demands of Dendritic Growth and Synaptic Integrity
Praschberger R, Lowe SA, Malintan NT, Giachello CNG, Patel N, Houlden H, Kullmann DM, Baines RA, Usowicz MM, Krishnakumar SS, Hodge JJL, Rothman JE, Jepson JEC. Mutations in Membrin/GOSR2 Reveal Stringent Secretory Pathway Demands of Dendritic Growth and Synaptic Integrity. Cell Reports 2017, 21: 97-109. PMID: 28978487, PMCID: PMC5640804, DOI: 10.1016/j.celrep.2017.09.004.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsDendritesDrosophila melanogasterFemaleFibroblastsGene ExpressionGenetic Association StudiesGolgi ApparatusHumansMaleMembrane FusionMutationMyoclonic Epilepsies, ProgressivePhenotypePrimary Cell CultureQb-SNARE ProteinsRecombinant ProteinsSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsSecretory PathwaySynapsesYoung AdultConceptsMembrane fusionGolgi membrane fusionProgressive myoclonus epilepsyGenotype-phenotype relationshipsPresynaptic cytoskeletonEssential proteinsDrosophila modelMembrinMutationsPathogenic mutationsSynaptic functionProteinMyoclonus epilepsyExplanatory basisCytoskeletonGrowthSynaptic integrityPathway deficitsNervous systemMulti-layered strategySnareFusionFragmentation
2013
Conformational Dynamics of Calcium-Triggered Activation of Fusion by Synaptotagmin
Krishnakumar SS, Kümmel D, Jones SJ, Radoff DT, Reinisch KM, Rothman JE. Conformational Dynamics of Calcium-Triggered Activation of Fusion by Synaptotagmin. Biophysical Journal 2013, 105: 2507-2516. PMID: 24314081, PMCID: PMC3853086, DOI: 10.1016/j.bpj.2013.10.029.Peer-Reviewed Original Research
2011
Complexin cross-links prefusion SNAREs into a zigzag array
Kümmel D, Krishnakumar SS, Radoff DT, Li F, Giraudo CG, Pincet F, Rothman JE, Reinisch KM. Complexin cross-links prefusion SNAREs into a zigzag array. Nature Structural & Molecular Biology 2011, 18: 927-933. PMID: 21785414, PMCID: PMC3410656, DOI: 10.1038/nsmb.2101.Peer-Reviewed Original Research