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Although we now have a wealth of information on the transcription patterns of all the genes in the Drosophila genome, much less is known about the properties of the encoded proteins. To provide information on the expression patterns and subcellular localisations of many proteins in parallel, we have performed a large-scale protein trap screen using a hybrid piggyBac vector carrying an artificial exon encoding yellow fluorescent protein (YFP) and protein affinity tags. From screening 41 million embryos, we recovered 616 verified independent YFP-positive lines representing protein traps in 374 genes, two-thirds of which had not been tagged in previous P element protein trap screens. Over 20 different research groups then characterized the expression patterns of the tagged proteins in a variety of tissues and at several developmental stages. In parallel, we purified many of the tagged proteins from embryos using the affinity tags and identified co-purifying proteins by mass spectrometry. The fly stocks are publicly available through the Kyoto Drosophila Genetics Resource Center. All our data are available via an open access database (Flannotator), which provides comprehensive information on the expression patterns, subcellular localisations and in vivo interaction partners of the trapped proteins. Our resource substantially increases the number of available protein traps in Drosophila and identifies new markers for cellular organelles and structures.

Original publication

DOI

10.1242/dev.111054

Type

Journal article

Journal

Development

Publication Date

10/2014

Volume

141

Pages

3994 - 4005

Keywords

Affinity purification, Cytoophidia, Live imaging, Protein trap, piggyBac, Animals, Bacterial Proteins, Crosses, Genetic, Drosophila Proteins, Drosophila melanogaster, Exons, Female, Gene Expression Profiling, Gene Expression Regulation, Developmental, Genetic Techniques, Genome, Luminescent Proteins, Male, Membrane Proteins, Ovary, Sex Factors, Testis, Transcription, Genetic