Protein Expression Prokaryotic cells E. coli

Get tips on using pMHL_2002-bfloGFPa1 to perform Protein Expression Eukaryotic cells - T. pseudonana IbpA DR2 antigen from Histophilus somni

Get tips on using pPICZαB/α-amylase to perform Protein Expression Eukaryotic cells - P. pastoris G. stearothermophilus SR74 α-amylase

Get tips on using pHIL‐S1‐opt‐RABV‐G to perform Protein Expression Eukaryotic cells - P. pastoris opt‐RABV‐G

Get tips on using pFastBac1- B/Brisbane/60/2008-NP to perform Protein Expression Eukaryotic cells - S. frugiperda Influenza NP

Get tips on using pcDNA™3.1D/V5-His TOPO®-hsEH to perform Protein Expression Eukaryotic cells - HEK293 hsEH

Get tips on using MHC Class II (I-A/I-E) Monoclonal Antibody (M5/114.15.2), eFluor 450, eBioscience™ to perform Flow cytometry Anti-bodies Mouse - MHCII

Get tips on using pYT379-CDK8-CycC-10xHis complex to perform Protein Expression Eukaryotic cells - S. frugiperda CDK8-CycC-10xHis complex

Get tips on using pFastBac1-A/reassortant/NYMC X-179-NP to perform Protein Expression Eukaryotic cells - S. frugiperda Influenza NP

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.