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Ribosome biogenesis is a conserved process in eukaryotes that requires a large number of small nucleolar RNAs and trans-acting proteins. The Saccharomyces cerevisiae MRD1 (multiple RNA-binding domain) gene encodes a novel protein that contains five consensus RNA-binding domains. Mrd1p is essential for viability. Mrd1p partially co-localizes with the(More)
Superantigens bind to MHC class II-positive cells and stimulate T lymphocytes expressing specific V beta regions of the TCR. Two distinct regions of staphylococcal enterotoxin A superantigen (SEA) have been shown to affect the binding to MHC class II molecules. Results presented here demonstrate for the first time that the SEA-DR interaction can be affected(More)
In the cell nucleus, precursors to mRNA, pre-mRNAs, associate with a large number of proteins and are processed to mRNA-protein complexes, mRNPs. The mRNPs are then exported to the cytoplasm and the mRNAs are translated into proteins. The mRNAs containing in-frame premature stop codons are recognized and degraded in the nonsense-mediated mRNA decay process.(More)
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