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We studied the role of mitochondrial cyclophilin 20 (CyP20), a peptidyl-prolyl cis-trans isomerase, in preprotein translocation across the mitochondrial membranes and protein folding inside the organelle. The inhibitory drug cyclosporin A did not impair membrane translocation of preproteins, but it delayed the folding of an imported protein in wild-type(More)
In many instances during development, morphogens specify cell fates by forming concentration gradients. In the Drosophila melanogaster wing imaginal disc, Decapentaplegic (Dpp), a bone morphogenetic protein (BMP), functions as a long-range morphogen to control patterning and growth. Dpp is secreted from a stripe of cells at the anterior-posterior(More)
OBJECTIVE Angiopoietin-2 (Ang-2) is a non-signal transducing ligand of the endothelial receptor tyrosine kinase Tie-2. Ang-2 is produced by endothelial cells and acts as an autocrine regulator mediating vascular destabilization by inhibiting Angiopoietin-1-mediated Tie-2 activation. To examine the transcriptional regulation of Ang-2, we studied the Ang-2(More)
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