RGD Reference Report - Redundancy of class III POU proteins in the oligodendrocyte lineage. - Rat Genome Database

Send us a Message
Submit Data |  Help |  Video Tutorials |  News |  Publications |  Download |  REST API |  Citing RGD |  Contact   
Search RGD Grant Resources Citing RGD About Us Contact Us
Genes Variants Community Projects QTLs Strains Markers Genome Information Ontologies Cell Lines References Download Submit Data
OntoMate (Literature Search) JBrowse (Genome Browser) Synteny Browser (VCMap) Variant Visualizer Multi-Ontology Enrichment (MOET) Gene-Ortholog Location Finder (GOLF) InterViewer (Protein-Protein Interactions) PhenoMiner (Quatitative Phenotypes) Gene Annotator OLGA (Gene List Generator) AllianceMine GViewer (Genome Viewer)
Aging & Age-Related Disease Cancer & Neoplastic Disease Cardiovascular Disease Coronavirus Disease Developmental Disease Diabetes Hematologic Disease Immune & Inflammatory Disease Infectious Disease Liver Disease Neurological Disease Obesity & Metabolic Syndrome Renal Disease Respiratory Disease Sensory Organ Disease
Find Models   new Genetic Models Autism Models Rat PhenoMiner (Quantitative Phenotypes) Chinchilla PhenoMiner Expected Ranges (Quantitative Phenotype) PhenoMiner Term Comparison Hybrid Rat Diversity Panel Phenotypes Phenotypes in Other Animal Models Animal Husbandry Strain Medical Records Phylogenetics Strain Availability Calendar Rats 101 Submissions Photo Archive
Pathways
Rat Community Forum Directory of Rat Laboratories Video Tutorials News RGD Publications RGD Presentations Archive Nomenclature Guidelines Resource Links Laboratory Resources Employment Resources

Redundancy of class III POU proteins in the oligodendrocyte lineage.

Authors: Schreiber, J  Enderich, J  Sock, E  Schmidt, C  Richter-Landsberg, C  Wegner, M 
Citation: Schreiber J, etal., J Biol Chem 1997 Dec 19;272(51):32286-93.
RGD ID: 633620
Pubmed: PMID:9405434   (View Abstract at PubMed)

Class III POU proteins are prominent regulators of neural development. Tst-1/Oct6/SCIP, for instance, is essential for terminal differentiation of myelinating Schwann cells in the peripheral nervous system. Although Tst-1/Oct6/SCIP is also expressed in the myelin forming oligodendrocytes of the central nervous system, targeted deletion of Tst-1/Oct6/SCIP failed to reveal a gross alteration of myelination in the central nervous system. To better understand this apparent discrepancy, we examined the expression of POU proteins in both cultured primary oligodendrocytes and in the oligodendrocyte-like CG-4 cell line. These cells expressed Tst-1/Oct6/SCIP, Brn-1, and Brn-2 in significant amounts, indicating that Brn-1 and Brn-2 might have the capacity to compensate loss of Tst-1/Oct6/SCIP. We show that Tst-1/Oct6/SCIP, Brn-1, and Brn-2 were all down-regulated during the early phases of oligodendrocyte development both on RNA and protein level. All three POU proteins exhibited similar DNA binding characteristics. When promoters consisting of a single POU protein-binding site adjacent to a TATA box were used as reporters in transient transfections, Brn-1 proved to be a weaker transcriptional activator than Tst-1/Oct6/SCIP. In agreement with this, we found the transactivation domain of Brn-1, which we mapped between amino acids 119 and 237, significantly weaker than the transactivation domain of Tst-1/Oct6/SCIP. Taken together, our data imply a partial, but not complete redundancy between POU proteins in oligodendrocytes.

Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
positive regulation of transcription by RNA polymerase II  IDA 633620 RGD 

Molecular Function
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
DNA-binding transcription factor activity  IDA 633620 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Pou3f3  (POU class 3 homeobox 3)

Objects referenced in this article
Gene Pou3f2 POU class 3 homeobox 2 Rattus norvegicus

Additional Information