6533b86dfe1ef96bd12c94d2

RESEARCH PRODUCT

A GFP-tagged Muscleblind C protein isoform reporter construct

Ariadna BargielaMaya PascualMonferrer LRuben ArteroFernandez Costa JmBeatriz Llamusi

subject

Cell NucleusProtein isoformGene isoformMusclesRecombinant Fusion ProteinsTransgeneGreen Fluorescent ProteinsNuclear ProteinsBiologyMolecular biologyFusion proteinGreen fluorescent proteinAnimals Genetically Modifiedchemistry.chemical_compoundchemistryGenes ReporterLive cell imagingInsect ScienceAnimalsDrosophila ProteinsMBNL1DrosophilaGenetic EngineeringGene

description

Drosophila muscleblind (mbl), the ortholog of human Muscleblind-like 1 (MBNL1) gene involved in Myotonic Dystrophy (DM), gives raise to protein isoforms MblA to G. The specific functions and subcellular distribution of isoforms are still largely unknown. To overcome the lack of isoform-specific antibodies we generated transgenic flies that express a GFP:MblC fusion protein under the control of the Gal4/UAS system. The reporter fusion protein was able to functionally complement mbl loss of function mutations, demonstrating activity, and accumulated predominantly in adult muscle nuclei. The fluorescent nature of the reporter makes it appropriate for live imaging detection of MblC protein isoform.

https://doi.org/10.4161/fly.4.4.13259