TY - JOUR ID - enlighten90497 UR - http://www.genetics.org/content/159/4/1659.abstract IS - 4 A1 - Korey, Christopher A. A1 - Wilkie, Gavin S. A1 - Davis, Ilan A1 - Van Vactor, David Y1 - 2001/12/01/ N2 - We found that mutations in small bristles (sbr) affect several tissues during the development of the fruit fly. In sbr embryos, neurons have defects in pathfinding and the body wall muscles have defective morphology. As adults, sbr flies have smaller and thinner bristles with a reduced diameter, suggesting a defective cytoskeleton within. The phenotypes we observe are consistent with defects in cell morphogenesis. We identified DmNXF1, the Drosophila homolog of a mRNA export protein that has been characterized in human (NXF1/TAP) and yeast (Mex67p) as the protein encoded by the small bristles locus. Given that a global decrease in mRNA export in these mutants is likely, the phenotypes we observe suggest that certain tissues are acutely sensitive to lower levels of cytoplasmic mRNA and the resultant decrease in protein synthesis during key stages of cellular morphogenesis. JF - Genetics VL - 159 SN - 0016-6731 TI - Small bristles is required for the morphogenesis of multiple tissues during drosophila development SP - 1659 AV - none EP - 1670 ER -