A Nature Structural & Molecular Biology article published by Singer et al has provided a fascinating insight into the kinetics of RNA polymerase II during transcription. Using a combination of extremely elegant fluorescent microscopy-based assays and computer modelling, the group have provided the first measurements of RNA polymerase II kinetics in living cells. Among their findings are that only 8% the RNA polymerase/promoter interactions lead to mRNA synthesis and that the elongation speed of the polymerase is much faster than previously thought. This is a remarkable piece of experimental design and is well worth reading.
This is the first in a three part series on the transformation of E.coli. By the end of this you should be an expert on E.coli transformation and on which strains to choose for different applications. If you’re already an expert, I hope it’ll be an enjoyable refresher for you. In either case, please comment […]
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