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Retroviral integrase enzymes have a nonspecific endonuclease activity that is stimulated by certain compounds, suggesting that integrase could be manipulated to damage viral DNA. To identify integrase stimulator (IS) compounds as potential antiviral agents, we have developed a nonradioactive assay that is suitable for high-throughput screening. The assay uses a 49-mer oligonucleotide that is 5′-labeled...
We have cloned and characterized a naturally occurring split mini-DnaE intein capable of protein trans-splicing in the cyanobacterium Synechococcus elongatus (Sel DnaE intein). Sel DnaE intein is homologous to Synechocystis sp. PCC6803 (Ssp) DnaE intein and Nostoc punctiforme (Npu) DnaE intein, with a protein sequence identity of 60% for the N-terminal part of intein and 61% for the C-terminal part...
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