RRC ID 30446
Author Morin X, Daneman R, Zavortink M, Chia W.
Title A protein trap strategy to detect GFP-tagged proteins expressed from their endogenous loci in Drosophila.
Journal Proc. Natl. Acad. Sci. U.S.A.
Abstract In Drosophila, enhancer trap strategies allow rapid access to expression patterns, molecular data, and mutations in trapped genes. However, they do not give any information at the protein level, e.g., about the protein subcellular localization. Using the green fluorescent protein (GFP) as a mobile artificial exon carried by a transposable P-element, we have developed a protein trap system. We screened for individual flies, in which GFP tags full-length endogenous proteins expressed from their endogenous locus, allowing us to observe their cellular and subcellular distribution. GFP fusions are targeted to virtually any compartment of the cell. In the case of insertions in previously known genes, we observe that the subcellular localization of the fusion protein corresponds to the described distribution of the endogenous protein. The artificial GFP exon does not disturb upstream and downstream splicing events. Many insertions correspond to genes not predicted by the Drosophila Genome Project. Our results show the feasibility of a protein trap in Drosophila. GFP reveals in real time the dynamics of protein's distribution in the whole, live organism and provides useful markers for a number of cellular structures and compartments.
Volume 98(26)
Pages 15050-5
Published 2001-12-18
DOI 10.1073/pnas.261408198
PII 261408198
PMID 11742088
PMC PMC64981
MeSH Animals DNA Transposable Elements Drosophila / embryology Drosophila / genetics* Gene Expression Regulation Green Fluorescent Proteins Luminescent Proteins / genetics* Reverse Transcriptase Polymerase Chain Reaction Subcellular Fractions / metabolism
IF 9.504
Times Cited 424
WOS Category CELL BIOLOGY
Resource
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