Proteomic characterization of post-mortem human brain tissue following ultracentrifugation-based subcellular fractionation
Kandigian SE, Ethier EC, Kitchen RR, Lam TT, Arnold SE, Carlyle BC. Proteomic characterization of post-mortem human brain tissue following ultracentrifugation-based subcellular fractionation. Brain Communications 2022, 4: fcac103. PMID: 35611312, PMCID: PMC9123841, DOI: 10.1093/braincomms/fcac103.Peer-Reviewed Original ResearchProteomic characterizationSubcellular fractionationTissue cell type compositionMultiple cellular organellesPost-mortem human brain tissueMajority of proteinsThousands of proteinsCell type compositionHuman brain tissueSame biological sampleSpatial proteomicsProtein functionProtein localizationOrganellar markersCellular organellesCellular localizationDrug targetsSubcellular levelOrganellesAbundant organellesCentrifugation fractionsProteinCell linesDisease mechanismsMembrane breakdownIdentification of substrates of palmitoyl protein thioesterase 1 highlights roles of depalmitoylation in disulfide bond formation and synaptic function
Gorenberg EL, Tieze S, Yücel B, Zhao HR, Chou V, Wirak GS, Tomita S, Lam TT, Chandra SS. Identification of substrates of palmitoyl protein thioesterase 1 highlights roles of depalmitoylation in disulfide bond formation and synaptic function. PLOS Biology 2022, 20: e3001590. PMID: 35358180, PMCID: PMC9004782, DOI: 10.1371/journal.pbio.3001590.Peer-Reviewed Original ResearchConceptsPalmitoyl-protein thioesterase 1Disulfide bond formationNeuronal ceroid lipofuscinosisPosttranslational modificationsRole of PPT1Identification of substratesResin-assisted captureEnzyme palmitoyl-protein thioesterase 1Synaptic adhesion moleculesNeurodegenerative diseasesMature proteinMitochondrial proteinsMolecular dissectionPutative substratesDepalmitoylationKnockout mouse brainFunction mutationsStringent screenMolecular pathwaysSynapse functionDisulfide bondsProteinDevastating neurodegenerative diseaseDisease mechanismsSynaptic function