Richard Southgate

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Using a continuous fluorescence-based enzyme assay, we have characterized the antibacterial agents tumicamycin and liposidomycin B as inhibitors of solubilized Escherichia coli phospho-N-acetylmuramyl-pentapeptide translocase. Tunicamycin exhibited reversible inhibition (Ki = 0.55 +/- 0.1 microM) which was noncompetitive with respect to the lipid acceptor(More)
Enzymes of the membrane cycle of reactions in bacterial peptidoglycan biosynthesis remain as unexploited potential targets for antibacterial agents. The first of these enzymes, phospho-N-acetylmuramyl-pentapeptide-translocase (EC, has been overexpresed in Escherichia coli and solubilized from particulate fractions. The work of W.A. Weppner and(More)
The four small heat shock protein genes of Drosophila melanogaster clustered at cytological locus 67B have been characterized by DNA sequencing. Over 6250 nucleotides, covering the 5', protein-coding and 3' regions of these genes have been determined together with their predicted amino acid sequences. Each gene possesses characteristic eukaryotic 5' and 3'(More)
Funding for species conservation is insufficient to meet the current challenges facing global biodiversity, yet many programs use expensive single-species recovery actions and neglect broader management that addresses threatening processes. Arid Australia has the world's worst modern mammalian extinction record, largely attributable to competition from(More)
Heat-shock genes coding for heat-shock protein 70 (HSP70) in Drosophila melanogaster were subcloned into an SV40/plasmid recombinant capable of replication in permissive monkey COS cells. Following transfection of COS cells, no significant amount of Drosophila hsp70 RNA was detected at 37 degrees C. In contrast, a heat-shock at 43 degrees C or arsenite(More)
HYPOTHESIS The external rotation lag sign (ERLS) is a test designed to assess the integrity of the supraspinatus (SSP) and infraspinatus tendons. This study intends to determine the electromyographic pattern of shoulder girdle muscles during a series of ERLS tasks conducted at full adduction and 20 degrees of elevation to figure out the better way to(More)
The promoter regions of the Drosophila melanogaster small heat-shock protein genes have been analysed in order to localize those sequences responsible for their heat-shock transcriptional inducibility. Different lengths of the 5' DNA sequences of these four genes were each fused individually to the Herpes simplex virus thymidine kinase (HSV-tk)(More)