Most importantly, the excitation and emission wavelength should match the fluorescence properties of deGFP/eGFP (e.g. λEm 488 nm, λEx 535 nm). Other reader settings such as reading mode, integration time and gain value should be chosen under consideration of high well-to-well fluorescence reading reproducibility.
Yes. For all plasmids containing the lambda phage promoter (P70a, P70b, P70c, P70d) it is extremely crucial to use E. coli KL740 as the transformation strain. When cultivated below 30°C, this strain over-expresses the lambda phage repressor protein Cl857 that represses P70 promoters, thus ensuring high transformation efficiency and plasmid stability. KL740 can be purchased from E. coli Genetic Stock Center (Yale) [CGSC#: 4382] or from Daicel Arbor. For all other plasmids, a standard laboratory E. coli cloning strain like JM109 or DH5alpha is sufficient.
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