siRNA / miRNA gene silencing Human CRL-5915

Get tips on using pLV-EF1a-IRES-Puro to perform CRISPR Mouse - Deletion L929 Ppm1b

Get tips on using pCas-Guide-EF1a-GFP to perform CRISPR Mouse - Deletion αT3 Stim2

Get tips on using pcDNA-mC/EBPb to perform CRISPR Mouse - Activation 3T3-L1 C/EBPβ

Get tips on using RNeasy Plant Mini Kit to perform RNA isolation / purification Yeast - Neurospora crassa

Get tips on using pX333-sgNF1-sgTrp53-Cas9 to perform CRISPR Mouse - Deletion 3T3-L1 Trp53

Get tips on using QIAamp DNA Mini Kit to perform DNA isolation / purification Yeast - Cryptococcus neoformans

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 pX330-U6-Chimeric_BB-CBh-hSpCas9 to perform CRISPR Mouse - Activation C2C12 Lama1

Get tips on using pSpCas9(BB)-2A-GFP (PX458) to perform CRISPR Rat - Deletion AR42J FICD

Get tips on using pSpCas9(BB)-2A-GFP (PX458) to perform CRISPR Rat - Deletion AR42J Atg12