Abstract
We designed cassettes allowing the systematic fusion of fluorescent or luminescent proteins preceded by the calmodulin binding peptide tag to the C-terminus of Escherichia coli proteins. The chromosomal insertion, and thus physiological expression level of these fusions, permits the study of protein localization by fluorescent microscopy and protein quantification, in vivo and dynamically in diverse conditions. Furthermore, the calmodulin binding peptide tag allows standard detection, affinity purification, and co-purification experiments. These cassettes are therefore very valuable for the versatility of experiments they make available for a given strain, from biochemistry to dynamic and in vivo studies.
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