The activation of chick alkaline phosphatase by calmodulin

Autor: L, Sivanaesan, T K, Kwan, R, Perumal
Rok vydání: 1991
Předmět:
Zdroj: Biochemistry international. 25(3)
ISSN: 0158-5231
Popis: Calmodulin, an activator protein in most calcium-dependent processes, was isolated to apparent homogeneity from the femurs of 1-day old chicks using phenyl-Sepharose and high performance liquid chromatography. The purified calmodulin was found to produce a 6-fold increase in the activity of alkaline phosphatase isolated from the same source. A Ca2+ concentration of 10(-5) M was required for the activation. Purification of alkaline phosphatase involved acetone precipitation, DEAE-Sephacel and Sephadex G-200 column chromatography. The enzyme was purified to 540-fold and had a specific activity of 10.75 U/mg protein.
Databáze: OpenAIRE