Prolyl isomerase activity was first discovered using a chymotrypsin-based assay.

These double stranded mutants are then screened for the desired optimized function using a relevant assay.

To search for such a protein, Dr. Ross and his colleagues used a special assay that screens for proteins that interact.

Termites were later collected from the field and tested for the rabbit-IgG markers using a rabbit-IgG-specific assay.

Therefore, we used a GST-pulldown assay to determine if the proteins could interact in vitro .

Orthogonal testing: Confirmed hits are assayed using a different assay which is usually closer to the target physiological condition or using a different technology.

STS enzyme deficiency is confirmed using a clinically available biochemical assay.

After allowing time for protein synthesis, β-galactosidase activity is assayed using a simple colorimetric assay.

Fibrinogen was measured using a quantitative assay of clotting time compared to a known standard.