DNA quantification Human

Get tips on using esiRNA human PTPN3 (esiRNA1) to perform siRNA / miRNA gene silencing Human - A2780 PTPN3

Get tips on using siGENOME Human PAK1 siRNA to perform siRNA / miRNA gene silencing Human - HeLa PAK1

Get tips on using ON-TARGETplus SMARTpool - Human to perform siRNA / miRNA gene silencing Human - U2OS DKC1

Get tips on using CometAssay Electrophoresis System II to perform DNA Damage Assay Human Skin Fibroblast Cell (FSK)

Get tips on using CometChip Electrophoresis Starter Kit to perform DNA Damage Assay Human bronchial epithelial cells (hBE)

Get tips on using Comet SCGE assay kit to perform DNA Damage Assay Human bronchial epithelial cells (hBE)

Get tips on using SurePrint Human miRNA Microarrays to perform Microarray Human - Endometrial stromal cells miRNA-expression array (labelled)

Get tips on using JetPrime to perform DNA transfection Mammalian cells - Primary cells Human lung fibroblasts (HLF)

Get tips on using Anti-Human CD284 (TLR4) to perform Flowcytometry TLR4 (CD284) - Mouse / IgG1, kappa Human Brilliant violet 421

Protein isolation is a technique that involves isolation and/ or purification of protein from cells or tissues via chromatography or electrophoresis. The major challenges in protein isolation include: 1. The concentration of proteins in cells is variable and tends to be small for some intracellular proteins. Unlike nucleic acids, proteins cannot be amplified. 2. Proteins are more unstable than nucleic acids. They are easily denatured under suboptimal temperature, pH or salt concentrations. 3. Finally, no generalized technique/protocol can be applied for protein isolation. Proteins may have different electrostatic (number of positively or negatively charged amino acids) or hydrophobic properties. Therefore, protein purification requires multiple steps depending on their charge (a negatively charged resin/column for positively charged proteins and vice-versa), dissolution (using detergents) and unlike in the case of DNA and RNA, instead of using salts, proteins should be isolated by isoelectric precipitation.