0000000000241304

AUTHOR

Ernest Sargsyan

showing 2 related works from this author

Genomic organization and promoter characterization of the gene encoding a putative endoplasmic reticulum chaperone, ERp29

2002

Abstract ERp29 is a soluble protein localized in the endoplasmic reticulum (ER) of eukaryotic cells, which is conserved in all mammalian species. The N-terminal domain of ERp29 displays sequence and structural similarity to the protein disulfide isomerase despite the lack of the characteristic double cysteine motif. Although the exact function of ERp29 is not yet known, it was hypothesized that it may facilitate folding and/or export of secretory proteins in/from the ER. ERp29 is induced by ER stress, i.e. accumulation of unfolded proteins in the ER. To gain an insight into the mechanisms regulating ERp29 expression we have cloned and characterized the rat ERp29 gene and studied in details …

5' Flanking RegionRecombinant Fusion ProteinsMolecular Sequence DataCHO CellsBiologyCell LineMiceCricetinaeSequence Homology Nucleic AcidGene expressionTumor Cells CulturedGeneticsAnimalsHumansRNA MessengerLuciferasesPromoter Regions GeneticProtein disulfide-isomeraseGeneHeat-Shock ProteinsPhylogenyBase SequenceGene Expression ProfilingEndoplasmic reticulumPromoter3T3 CellsDNAExonsSequence Analysis DNAGeneral MedicineMolecular biologyIntronsRatsHousekeeping geneSecretory proteinGenesUnfolded protein responseFemaleTranscription Initiation SiteSequence AlignmentHeLa CellsGene
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Identification of ERp29, an endoplasmic reticulum lumenal protein, as a new member of the thyroglobulin folding complex.

2002

Folding and post-translational modification of the thyroid hormone precursor, thyroglobulin (Tg), in the endoplasmic reticulum (ER) of the thyroid epithelial cells is facilitated by several molecular chaperones and folding enzymes, such as BiP, GRP94, calnexin, protein disulfide isomerase, ERp72, and others. They have been shown to associate simultaneously and/or sequentially with Tg in the course of its maturation, thus forming large heterocomplexes in the ER of thyrocytes. Here we present evidence that such complexes include a novel member, an ER-resident lumenal protein, ERp29, which is present in all mammalian tissues with exceptionally high levels of expression in the secretory cells. …

Protein DenaturationProtein FoldingImmunoprecipitationmedicine.medical_treatmentBlotting WesternThyroid GlandThyrotropinBiologyEndoplasmic ReticulumLigandsBiochemistryThyroglobulinRats Sprague-DawleyCalnexinmedicineCentrifugation Density GradientAnimalsUreaSecretionProtein disulfide-isomeraseMolecular BiologyCells CulturedHeat-Shock ProteinsThyroid Epithelial CellsChromatographyEndoplasmic reticulumCell BiologyPrecipitin TestsRatsCross-Linking ReagentsBiochemistryLiverMicroscopy FluorescenceMicrosomes LiverProtein foldingThyroglobulinProtein BindingThe Journal of biological chemistry
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