کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5512620 1540221 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Purification and characterization of an extracellular ribonuclease from a Bacillus sp. RNS3 (KX966412)
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Purification and characterization of an extracellular ribonuclease from a Bacillus sp. RNS3 (KX966412)
چکیده انگلیسی
Ribonucleases (RNases) catalyze the degradation of ribonucleic acid (RNA) into smaller nucleotides. RNases display angiogenic, neurotoxic, antitumor and immunosuppressive properties. In the present study, an extracellular RNase was successfully purified to homogeneity from a Bacillus sp. RNS3 (KX966412) by salting out at 0-50% ammonium sulphate saturation followed by the gel permeation (Sephadex G-100) chromatography. The multistep purification resulted in 10.4 fold purification of RNase with a yield of 3.12%. The activity of the purified RNase was found to be 2.02 U/mg protein. The purified RNase was monomeric with a molecular weight of 66 kDa. It exhibited Michalis-Menten kinetics parameters Kcat 7.92 min−1 and Km 0.12 mg/mL. The antiproliferative activity of the purified RNase was tested against an established Hep-2C (HeLa derived) cancer cell line in vitro. The purified RNase reduced the viability of the Hep-2C cells significantly with an IC50 value of 3.53 μg/mL. The haemolytic activity of purified RNase was also evaluated and unfortunately, it showed a strong haemolytic activity towards human RBCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Biological Macromolecules - Volume 97, April 2017, Pages 440-446
نویسندگان
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