Glycerol stock of live bacteria

For recombinant protein production, E.coli is the most popular tool to transfect a vector.  It is very important to make stocks to keep the bacteria….

Sample dilution in ELISA

In animal studies, antibody titers against antigens are often assayed to determine immune responses by treatments (1). Since the antibody titers highly depend on animal…

Protein Folding 2

To fold proteins containing disulfide bonds, we should consider the chemistry of the covalent bonds involved in cysteine thiol oxidation. The presence of heavy metals,…

Protein Folding 1

Bacterial inclusion bodies are nightmare when we develop recombinant protein. The first step, which generally is used, is dispersing the inclusion bodies in a denaturant…

Collagen structure

Type I and type II collagen consist of a triple helix form with 3 alpha chains. Type I collagen has two alpha 1 chains and…

Non-specific reaction in indirect ELISA

Serological antibody ELISAs are useful to evaluate humoral immune response. Especially, in autoimmune disease patients and animal models, the assays allow to identify or detect…

ELISA data analysis

Generally, many scientists use a program which came from a plate reader. I agree that It is very useful. However, it sometimes does not fit…

HMGB1

HMGB1 (high mobility group box 1) is a DNA binding protein. HMGB1 contains 216 amino acids consisting of three structural domains, termed “A box (9-85)”,…