Generation of a growth curve can be useful in evaluating the growth characteristics of a cell line.
From a growth curve, the lag time, population doubling time, and saturation density can be
determined. - [Read Generation of Growth Curve Protocol]
This is an easy and straightforward protocol that gives efficiencies of 106 to 107 cfu/mg of plasmid DNA. A growth curve is required for each strain that is prepared.
- [Read High Efficiency FCC Preparation and Tx Protocol]
Quantitative PCR involves co-amplification of two templates: a constant amount of a preparation containing the desired target sequence and serial dilutions of a reference template that is added in known amounts to a series of amplification reactions. The concentration of the target sequence is determined by simple interpolation into a standard curve. - [Read Quantitative PCR Protocol II]
Protocol uses FAM-(6-carboxy-fluorescein) or JOE-(6-carboxy-4', 5' -dichloro-2',7' -dimethoxy-fluorescein) labeled LUX (Light Upon eXtension) primers, which can quantify 100 or fewer copies of the target DNA in a background of nonspecific templates, over a broad dynamic range of less than 100-107 copies. It uses uracil deglycosylase (UDG) to minimize the risk of carryover contamination, and includes a melting curve analysis of the product. - [Read Real-Time PCR Protocol]
Protocol for selection of an ion exchanger: Determining the pI of a protein using the titration curve method. The choice of whether to use an anion or a cation exchanger should be based on knowledge of the stability of the protein, and the binding properties of the target protein and other molecules present in the sample. - [Read Selection of an Ion Exchanger Protocol II]