2004
Carbohydrates act as sorting determinants in ER-associated degradation of tyrosinase
Svedine S, Wang T, Halaban R, Hebert DN. Carbohydrates act as sorting determinants in ER-associated degradation of tyrosinase. Journal Of Cell Science 2004, 117: 2937-2949. PMID: 15161941, DOI: 10.1242/jcs.01154.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAnimalsCalnexinCarbohydrate MetabolismCells, CulturedEndoplasmic ReticulumEndoplasmic Reticulum Chaperone BiPGlucoseHeat-Shock ProteinsMannoseMelanocytesMiceMolecular ChaperonesMonophenol MonooxygenaseMutationProteasome Endopeptidase ComplexProtein Disulfide-IsomerasesProtein TransportConceptsLectin chaperonesMutant tyrosinaseEndoplasmic reticulum (ER) quality control machineryQuality control machineryProtein disulfide isomeraseDegradation of tyrosinaseERAD substratesChaperone interactionsNon-native substratesER organizationProtein maturationER retentionER lumenDisulfide isomeraseAberrant proteinsProteasomal degradationGlucose trimmingProtein degradationProtein aggregatesTyrosinase degradationSubsequent degradationChaperonesIntact melanocytesMaturation processProteasome
2003
Tyrosinase Maturation and Oligomerization in the Endoplasmic Reticulum Require a Melanocyte-specific Factor*
Francis E, Wang N, Parag H, Halaban R, Hebert DN. Tyrosinase Maturation and Oligomerization in the Endoplasmic Reticulum Require a Melanocyte-specific Factor*. Journal Of Biological Chemistry 2003, 278: 25607-25617. PMID: 12724309, DOI: 10.1074/jbc.m303411200.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCalnexinCalreticulinCells, CulturedCentrifugation, Density GradientCHO CellsCricetinaeCross-Linking ReagentsDimerizationDogsElectrophoresis, Polyacrylamide GelEndoplasmic ReticulumLectinsMelanocytesMembrane GlycoproteinsMiceMicrosomesMonophenol MonooxygenaseMutationOxidoreductasesPancreasPlasmidsPolysaccharidesProtein BindingProtein BiosynthesisProtein FoldingProtein TransportProteinsRabbitsSucroseTime FactorsTranscription, GeneticTrypsinConceptsMelanocyte-specific factorsSemipermeabilized cellsEndoplasmic reticulum retentionLectin chaperones calnexinMelanocyte-specific proteinsTyrosinase-related protein 1Wild-type tyrosinaseSynthesis of melaninChaperone interactionsChaperone calnexinTyrosinase maturationMouse melanocytesTrypsin-resistant stateProtein 1Human tyrosinaseTranslation systemOligomerizationPersistent interactionsMaturationMelanocytesTyrosinaseCellsCalnexinMisfoldingER
2000
Proper Folding and Endoplasmic Reticulum to Golgi Transport of Tyrosinase Are Induced by Its Substrates, DOPA and Tyrosine*
Halaban R, Cheng E, Svedine S, Aron R, Hebert D. Proper Folding and Endoplasmic Reticulum to Golgi Transport of Tyrosinase Are Induced by Its Substrates, DOPA and Tyrosine*. Journal Of Biological Chemistry 2000, 276: 11933-11938. PMID: 11124258, DOI: 10.1074/jbc.m008703200.Peer-Reviewed Original ResearchConceptsWild-type tyrosinaseEndoplasmic reticulumProper foldingWild-type proteinMelanoma cellsLoss of pigmentationTyrosinase-positive melanoma cellsGolgi transportType proteinAlbino mutantS proteasomeSubsequent retranslocationMutant formsCatalytic stateEnzymatic activityProteolytic degradationNative formReticulumFoldingProteinTumor-derived antigenic peptidesTyrosinase activitySuppress tyrosinase activityCellsMetabolic changesTranslation Rate of Human Tyrosinase Determines ItsN-Linked Glycosylation Level*
Újvári A, Aron R, Eisenhaure T, Cheng E, Parag H, Smicun Y, Halaban R, Hebert D. Translation Rate of Human Tyrosinase Determines ItsN-Linked Glycosylation Level*. Journal Of Biological Chemistry 2000, 276: 5924-5931. PMID: 11069924, DOI: 10.1074/jbc.m009203200.Peer-Reviewed Original ResearchConceptsTranslation rateCell-free systemProtein translation ratesType I membrane glycoproteinsNormal melanocytesHuman tyrosinaseSemi-permeabilized cellsMelanoma cellsUbiquitin-proteasomal pathwayRate of translationSite-directed mutagenesisWild-type tyrosinaseProtein synthesis inhibitor cycloheximideInefficient glycosylationGlycosylation efficiencyAberrant retentionProtein translationCotranslational eventsConsensus sitesCore glycanDegradative fateProtein doubletEndoplasmic reticulumMaturation eventsAmelanotic melanoma cells