Protein Expression Eukaryotic cells Leukocytes extracts

Get tips on using pET28a-FSHR to perform Protein Expression Prokaryotic cells - E. coli FSHR-57aa proteins

The most widely used method for protein quantification is by spectrophotometry. The concentration of the protein in the samples is measured at an absorbance of 280 nm. The absorbance of the sample protein is then plotted against a standard curve. This method allows for total protein quantification in a sample (cell and tissue extracts). Before analysing the concentration of protein in the sample, it is important to choose the right test method.  For high protein concentration samples (above 5 - 160 mg/ml) the best method is to use the Biuret test. For low concentrations samples (between 1 - 2000µg/ml) the best methods are Lowry assay, BCA assay, Bradford assay and coomassie blue (for exact sensitivity of the test kits you use, refer to manufacturer's protocol). If the samples contain detergents like Triton X-100 then BCA assay is the best choice. For samples that have proteins larger than 3 KDa in size Bradford assay is the best choice. Each method has advantages and disadvantages, plan your analysis considering your sample characteristics.

The most widely used method for protein quantification is by spectrophotometry. The concentration of the protein in the samples is measured at an absorbance of 280 nm. The absorbance of the sample protein is then plotted against a standard curve. This method allows for total protein quantification in a sample (cell and tissue extracts). Before analysing the concentration of protein in the sample, it is important to choose the right test method.  For high protein concentration samples (above 5 - 160 mg/ml) the best method is to use the Biuret test. For low concentrations samples (between 1 - 2000µg/ml) the best methods are Lowry assay, BCA assay, Bradford assay and coomassie blue (for exact sensitivity of the test kits you use, refer to manufacturer's protocol). If the samples contain detergents like Triton X-100 then BCA assay is the best choice. For samples that have proteins larger than 3 KDa in size Bradford assay is the best choice. Each method has advantages and disadvantages, plan your analysis considering your sample characteristics.

Get tips on using pMAPLe3 to perform Protein Expression Prokaryotic cells - E. coli mycobacterial Esx complex

Get tips on using pMAPLe4 to perform Protein Expression Prokaryotic cells - E. coli mycobacterial Esx complex

Get tips on using pCcrtB to perform Protein Expression Prokaryotic cells - E. coli Kocuria gwangalliensis CrtB

Get tips on using pKUC4 to perform Protein Expression Prokaryotic cells - B. licheniformis PphyL′-′xynA fusion

Get tips on using pKUC3 to perform Protein Expression Prokaryotic cells - B. licheniformis PphyL′-′amyE fusion

Get tips on using pBru-prochymosin to perform Protein Expression Prokaryotic cells - E. coli calf prochymosin

Get tips on using pET24b-prochymosin to perform Protein Expression Prokaryotic cells - E. coli calf prochymosin