Protein Expression Eukaryotic cells HeLa R19

Get tips on using PureLink Genomic DNA Mini Kit to perform DNA isolation / purification Cells - Immortalized cell lines HeLa

Get tips on using ICAfectin®442 siRNA transfection to perform DNA transfection Mammalian cells - Immortalized cell lines HeLa

Get tips on using FITC Annexin V Apoptosis Detection Kit I to perform Apoptosis assay cell type - HeLa cells

Get tips on using Lipofectamine® 2000 Transfection Reagent to perform siRNA / RNAi /miRNA transfection Human Cells - HeLa Lipofectamine

Get tips on using Lipofectamine® 2000 Transfection Reagent to perform siRNA / RNAi /miRNA transfection Mouse - HeLa cells Lipofectamine

Get tips on using GenElute™ Mammalian Total RNA Miniprep Kit to perform RNA isolation / purification Cells - immortalized HeLa

Get tips on using NucleoSpin® RNA/Protein to perform Protein isolation Mammalian cells - Human eutopic endometrial stromal cells

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.

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.