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The Scientific World Journal
Volume 2014, Article ID 191535, 14 pages
Research Article

Characterisation of Drosophila UbxCPTI000601 and hthCPTI000378 Protein Trap Lines

1Department of Genetics, University of Cambridge, Downing Street, Cambridge CB2 3EH, UK
2Department of Oral Biology and Biomedical Sciences, Faculty of Dentistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
3Department of Physiology, Development and Neuroscience, University of Cambridge, Downing Street, Cambridge CB2 3DY, UK
4Cambridge Systems Biology Centre, University of Cambridge, Downing Street, Cambridge CB2 EH, UK

Received 19 May 2014; Accepted 1 August 2014; Published 15 October 2014

Academic Editor: Makoto Sato

Copyright © 2014 Siew Woh Choo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In Drosophila, protein trap strategies provide powerful approaches for the generation of tagged proteins expressed under endogenous control. Here, we describe expression and functional analysis to evaluate new Ubx and hth protein trap lines generated by the Cambridge Protein Trap project. Both protein traps exhibit spatial and temporal expression patterns consistent with the reported endogenous pattern in the embryo. In imaginal discs, Ubx-YFP is expressed throughout the haltere and 3rd leg imaginal discs, while Hth-YFP is expressed in the proximal regions of haltere and wing discs but not in the pouch region. The UbxCPTI000601 line is semilethal as a homozygote. No T3/A1 to T2 transformations were observed in the embryonic cuticle or the developing midgut. The homozygous survivors, however, exhibit a weak haltere phenotype with a few wing-like marginal bristles on the haltere capitellum. Although hthCPTI000378 is completely lethal as a homozygote, the hthCPTI000378/hthC1 genotype is viable. Using a hth deletion (Df(3R)BSC479) we show that hthCPTI000378/Df(3R)BSC479 adults are phenotypically normal. No transformations were observed in hthCPTI000378, hthCPTI000378/hthC1, or hthCPTI000378/Df(3R)BSC479 embryonic cuticles. We have successfully characterised the Ubx-YFP and Hth-YFP protein trap lines demonstrating that the tagged proteins show appropriate expression patterns and produce at least partially functional proteins.