Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter
Vol 1, No 1 (2011): Life Sciences

Enzyme activity of Ascaridia galli Llarvae was inhibited by Phenil Methanyl Methane Sulfonyl Fluoride

Balqis, Ummu (Unknown)
Darmawi, . (Unknown)
Hambal, Muhammad (Unknown)

Article Info

Publish Date
15 Dec 2011


Enzyme catalyse a broad spectrum of important biological reactions, including protein metabolism and immune reactions. A study was carried out to partial characterize enzyme from exretory/secretory of A. galli L3 stage based on influence of inhibitor. A. galli L3 were recovered from intestines of 100 heads chickens 7 days after oesophagus inoculation with 6000 L2. L3 recovered in this manner were cultured (5 – 10 ml-1) in flasks containing rosswell park memorial institute (RPMI) 1640 media, pH 6.8, without phenol red. Cultures were incubated at 370C in 5% CO2 and culture fluid was collected after 3 days in culture. Excretory/secretory was prepared from metabolic product of L3 released in culture medium. The enzyme activity was assayed against casein 2%. The amount of concentration was determined from the absorbance at 595 nm. Inhibitor sensitivity on enzyme activity was studied in phenil methanyl methane sulfonyl fluoride (PMSF) 0,5 and 1 mM.    The result showed that enzyme activity of A. galli larvae was inhibited by PMSF 0.5 and 1 mM, which enzyme activity remainded 1,8 and 0%, respectively. The results indicate that the excretory/secretory secreted by L3  A. galli contained serine protease

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