1999
Calcium‐Dependent Cleavage of Striatal Enriched Tyrosine Phosphatase (STEP)
Nguyen T, Paul S, Xu Y, Gurd J, Lombroso P. Calcium‐Dependent Cleavage of Striatal Enriched Tyrosine Phosphatase (STEP). Journal Of Neurochemistry 1999, 73: 1995-2001. PMID: 10537058, DOI: 10.1046/j.1471-4159.1999.01995.x.Peer-Reviewed Original ResearchConceptsPostsynaptic densityTransient hypoxia-ischemiaPrimary neuronal culturesNeuronal precursor cellsCalcium-dependent cleavageHypoxia-ischemiaStriatal neuronsNeuronal insultsRat striatumNeuronal culturesCalcium ionophoreCalpain inhibitorsSTEP61Precursor cellsLow molecular weight formMolecular weight formsPhosphorylation levelsSmaller isoformSignificant increaseTyrosine phosphorylation levelsRapid appearanceCalpain treatmentRapid influxWeight formsCells
1996
STEP61: A Member of a Family of Brain-Enriched PTPs Is Localized to the Endoplasmic Reticulum
Bult A, Zhao F, Dirkx R, Sharma E, Lukacsi E, Solimena M, Naegele J, Lombroso P. STEP61: A Member of a Family of Brain-Enriched PTPs Is Localized to the Endoplasmic Reticulum. Journal Of Neuroscience 1996, 16: 7821-7831. PMID: 8987810, PMCID: PMC6579237, DOI: 10.1523/jneurosci.16-24-07821.1996.Peer-Reviewed Original ResearchConceptsNovel N-terminal regionEnzymatic activityEndoplasmic reticulumPutative transmembrane domainsIntrinsic membrane proteinsExtended N-terminusAmino acid sequenceN-terminal regionDistinctive intracellular distributionsProtein tyrosineCytosolic variantTransmembrane domainMembrane compartmentsMembrane proteinsAcid sequenceSubcellular fractionationN-terminusRecombinant proteinsTransfection experimentsSTEP61Intracellular distributionProteinReticulumImmunocytochemical labelingFamily
1995
Identification of two alternatively spliced transcripts of STEP: a subfamily of brain-enriched protein tyrosine phosphatases
Sharma E, Zhao F, Bult A, Lombroso P. Identification of two alternatively spliced transcripts of STEP: a subfamily of brain-enriched protein tyrosine phosphatases. Brain Research 1995, 32: 87-93. PMID: 7494467, DOI: 10.1016/0169-328x(95)00066-2.Peer-Reviewed Original ResearchConceptsTyrosine phosphatase domainPhosphatase domainProtein tyrosineSpliced transcriptsExon-intron organizationProtein tyrosine phosphataseOpen reading frameTyrosine phosphataseReading frameDistinct functionsGenomic DNANorthern analysisSTEP geneSTEP isoformsMolecular massTranscriptsSTEP61ProteinMouse brainTyrosineCentral nervous systemSubfamiliesGenesNervous systemMonoclonal antibodies