The pattern and extent of DNA methylation can significantly affect the success of restriction digestions
or bacterial transformations. Prokaryotic DNA may be methylated by host restriction/modification
systems, while eukaryotic DNA often is methylated i - [Read A practical guide to DNA methylation Promega PDF]
The CellTiter-Glo® Luminescent Cell Viability Assay is a homogeneous method to determine the number of viable cells in culture. Detection is based on using the luciferase reaction to measure the amount of ATP from viable cells. The amount of ATP in cells correlates with cell viability. - [Read Cell Viability Assays that Measure ATP Protocol]
The CellTiter-Blue® Cell Viability Assay uses an optimized reagent containing resazurin. The homogeneous procedure involves adding the reagent directly to cells in culture at a recommended ratio of 20µl of reagent to 100µl of culture medium. - [Read Cell Viability Assays that Measure Metabolic Capacity Protocol]
Choosing a cell viability or cytotoxicity assay from among the many different options available can be a challenging task. Includes information on: Establishing an In Vitro Model System; Choosing an Endpoint to Measure; Characterizing Assay Responsiveness; Determining Dose and Duration of Exposure; Homogeneous Assays for Multiwell Formats and Automated Screening; Additional Factors to Consider When Choosing a Cell Viability Assay; Cell Viability Assays that Measure ATP Protocol; etc.. - [Read Cell Viability Information For Protocols and Applications]
Cloning Enzymes a Guide Promega. An Enzyme Resource Guide series, highlights those enzymes important in nucleic acid cloning procedures. Promega - [Read Cloning Enzymes a Guide Promega]
Cell-based assays are important tools for contemporary biology and drug discovery because of their predictive potential for in vivo applications.This assay gives ratiometric, inversely proportional values of viability and cytotoxicity (Figure 4.15) that are useful for normalizing data to cell number. Also, this reagent is compatible with additional fluorescent and luminescent chemistries. - [Read Determining Number of Live and Dead Cells in Cell Population: Cytotoxicity Assay Protocol]
Provides information on specific parameters you need to be aware of when using eukaryotic in vitro translation systems. Includes: DNA Template Considerations; Protein Labeling; Non-Radioactive Protein Labeling. - [Read Eukaryotic In Vitro Translation Systems]
A detailed protocol for bisulfite treatment of DNA. DNA is first digested with a restriction enzyme. DNA is denauted at 97C for 5min. Bisulfite protocol is included. Also DNA purification using the Promega Wizard DNA Cleanup kit in indicated. Fan Lab. UCL - [Read Fan Lab Bisulfite Treatment of Genomic DNA]
Ligation with GUS vector and Transformation. Chemical Transformation of E. coli. Ligation Procedure for LigaFastâ„¢ Rapid DNA Ligation System (Promega). B. Beason, Rice University. - [Read Ligation with GUS vector and Transformation]
Luciferase assay using a 24 well plate. Includes: Cell Lysis; Reagent Preparation; Luminescence measurement; Wash injector; Protein quantitation; Data Analysis. - [Read Luciferase Assay 24 Well Plate (Promega System)]
Green fluorescent protein is commonly used to monitor gene expression and protein trafficking within intact cells. The Monster Green® Fluorescent Protein is encoded by an improved synthetic version of the green fluorescent protein gene originally cloned from Montastrea cavernosa (Great Star Coral). - [Read Monster Green® Fluorescent Protein Assay]
The latest generation of Promega cell-based assays includes luminescent and fluorescent chemistries to measure markers of cell viability, cytotoxicity and apoptosis, as well as to perform reporter analysis. Using these tools researchers can investigate how cells respond to growth factors, cytokines, hormones, mitogens, radiation, effectors, compound libraries and other signaling molecules. The protocols provided are guidelines for multiplexing cell-based assays & are intended as starting points. - [Read Multiplexing Cell Viability Assays Protocols]
Protocol describes a system which includes all of the
necessary components for in vitro transcription as well as a positive control template that provides run-off transcripts from a CMV immediate early promoter. This system is designed for runoff transcription. Alternatively, transcription
products can be analyzed by primer extension. - [Read Nuclear Extract in vitro Transcription System]