Rodney Morgan

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Agrin is a synapse-organizing protein likely to mediate nerve-induced aggregation of acetylcholine receptors and other postsynaptic components at the neuromuscular junction. We used in situ hybridization and polymerase chain reaction (PCR) to define the localization of agrin mRNA and its alternatively spliced forms in the chick embryo nervous system. Agrin(More)
Agrin is a synapse-organizing protein synthesized and externalized by motor neurons in the spinal cord, which organizes the postsynaptic apparatus of the developing neuromuscular junction. Agrin mRNA in the nervous system consists of several alternatively spliced variants. Splicing of agrin gene transcripts at the major site of variability results in four(More)
Rifampicin produces a dose-dependent decrease in protein synthesis in rat thymocytes. At concentrations up to 200 micrograms per milliliter, rifampicin does not alter rat thymic transcription. Rifampicin causes a direct inhibition of protein synthesis in rat thymic and hepatic microsomes, and in cadaveric human hepatic microsomes. Protein synthesis(More)
The plastid 16S–23S intergenic spacer region in Conopholis americana, a totally heterotrophic angiosperm in the family Orobanchaceae, has undergone large deletions, including the entire tRNAIle gene and all but small remnants of the tRNAAla gene. The length of the region is less than 20% of that of other land plants which have been investigated, making it(More)
The differentiation of naive CD4(+) T cells into either proinflammatory Th1 or proallergic Th2 cells strongly influences autoimmunity, allergy, and tumor immune surveillance. We previously demonstrated that beta1,6GlcNAc-branched complex-type (N-acetylglucosaminyltransferase V (Mgat5)) N-glycans on TCR are bound to galectins, an interaction that reduces TCR(More)
The plastid ribisomal RNA (rRNA) operon of the achlorophyllous root parasite Conopholis americana was completely sequenced. Full-length rRNA genes are retained in the gene cluster, but significant divergence has occurred in the 16S, 23S and 5S genes. Both the 16S–23S intergenic spacer and the 4.5S–5S intergenic spacer have suffered substantial deletions,(More)
Varied intensities of nitrotyrosine immunoreactivity were detected by Western blots after the reaction of proteins or enzymes with peroxynitrite (PN), a strong oxidant derived from nitric oxide. Intense immunoreactivity of cAMP-dependent protein kinase, calmodulin and most histones may depend on greater access to tyrosine residues in the reaction, whereas(More)
After removing the nonspecific immunoreactivities from crude extracts of Saccharomyces cerevisiae and wheat germ by immunoaffinity chromatography, the presence of Ca(2+)-related proteins was tested by Western blot analysis. Immunoreactivity for Bcl-2 was absent in the yeast, whereas the immunoreactivity was evident in wheat germ and remained unchanged after(More)