siRNA / miRNA gene silencing Rat Retinal stem cells

Get tips on using Gentra Puregene Cell Kit to perform DNA isolation / purification Cells - Primary cells HUVEC

Get tips on using EZ DNA Methylation-Gold Kit to perform DNA methylation profiling Gene specific profiling - HepG2 Constitutive Androstane Receptor (CAR)

Get tips on using CpGenome Universal DNA Modification Kit to perform DNA methylation profiling Gene specific profiling - MCF-7 Estrogen receptor alpha

Get tips on using β-Galactosidase Enzyme Assay System with Reporter Lysis Buffer to perform Reporter gene assay β-galactosidase substrates - Hep3B

Get tips on using β-Galactosidase Enzyme Assay System with Reporter Lysis Buffer to perform Reporter gene assay β-galactosidase substrates - HepG2

Get tips on using β-Galactosidase Enzyme Assay System with Reporter Lysis Buffer to perform Reporter gene assay β-galactosidase substrates - A549

Get tips on using β-Galactosidase Enzyme Assay System with Reporter Lysis Buffer to perform Reporter gene assay β-galactosidase substrates - H1299

Get tips on using β-Galactosidase Enzyme Assay System with Reporter Lysis Buffer to perform Reporter gene assay β-galactosidase substrates - HUVEC

Get tips on using GenJet™ In Vitro DNA Transfection Reagent to perform DNA transfection Mammalian cells - Primary cells Human lung fibroblasts (HLF)

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.