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The multicatalytic proteinase complex (MPC, proteasome) is composed of 28 subunits organized into four rings surrounding a water-filled canal. The catalytic centers face the inner canal confining protein substrates to an enclosed space. Experimental findings obtained with MPC from archaebacteria suggest that degradation of proteins by the complex is(More)
The Rx1 and Rx2 are extreme resistance genes, which have been introgressed from different species into potato cultivars and breeding lines. These two genes have a 98% and 96% sequence similarity at the nucleotide as well as at the amino acid level, respectively. Except one extra amino acid in the Rx2 gene, the high variations of the amino acid chain are due(More)
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