- Purification and Biochemical Characterization of a 17 kDa Fibrinolytic Enzyme from Schizophyllum commune
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In Suk Park , Jeong Uck Park , Min Jeong Seo , Min Jeong Kim , Hye Hyeon Lee , Sung Ryeal Kim , Byoung Won Kang , Yung Hyun Choi , Woo Hong Joo , Yong Kee Jeong
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J. Microbiol. 2010;48(6):836-841. Published online January 9, 2011
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DOI: https://doi.org/10.1007/s12275-010-0384-3
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A fibrinolytic enzyme of the mushroom, Schizophyllum commune was purified with chromatographic methods, including a DEAE-Sephadex A-50 ion-exchange column and gel filtrations with Sephadex G-75 and Sephadex G-50 columns. The analysis of fibrin-zymography and SDS-PAGE showed that the enzyme was a monomeric subunit that was estimated to be approximately 17 kDa in size. The fibrinolytic activity of the enzyme in plasminogen-rich and plasminogen-free fibrin plates was 1.25 and 0.44 U/ml, respectively. The N-terminal amino acid sequence of the purified enzyme was identified as HYNIXNSWSSFID, which was highly distinguished from known fibrinolytic enzymes. The relative activity of the purified enzyme with an addition of 5 mM EDTA, Phosphoramidon, and Bestatin was about 76, 64, and 52%, respectively, indicating that it is a metalloprotease. The optimum temperature for the purified enzyme was approximately 45°C, and over 87% of the enzymatic activity was maintained as a stable state in a pH range from 4.0 to 6.0. Therefore, our results
suggest that the potential thrombolytic agent from S. commune is a unique type of fibrinolytic enzyme.
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Citations
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