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Production, purification and characterization of novel fibrinolytic enzyme from Bacillus atrophaeus V4

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Abstract

This study was performed to investigate the fibrinolytic enzyme-producing potentials of locally isolated soil bacteria and to purify and characterize the fibrinolytic enzyme of the most potent bacterial isolate. Among 40 isolates, the isolate V4 was found to have the highest potential to produce the fibrinolytic enzyme. According to 16 S rRNA sequence analysis, the isolate V4 was identified as Bacillus atrophaeus (GenBank number: OL662991). The optimal parameters for fibrinolytic enzyme production from B. atrophaeus were determined as a skim milk powder concentration of 15 g/L, an initial pH of 7.0, a temperature of 35 °C and an incubation time of 72 h. The molecular weight of the purified enzyme was calculated as 36 kDa. After ammonium sulphate precipitation, ion-exchange chromatography and gel filtration chromotography-based processes, the specific activity of the fibrinolytic enzyme was determined as 6414.7 U/mg. The purified enzyme showed the maximum activity at pH 7.0 and 35 °C. The enzyme was inhibited by PMSF and EDTA. The substrate specifity of the enzyme was in the following order; fibrin (62.3 U/mg) > fibrinogen (46.2 U/mg) > casein (42.1 U/mg) > serum albumin (6.8 U/mg). This is the first report on the fibrinolytic enzyme production potential of the species B. atrophaeus.

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Funding

This study was supported by the project (FBG-2020-8779) (Ataturk University, Erzurum, Turkey).

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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by Ayse Varol, Seyda Albayrak, Hakan Ozkan, Yeliz Demir, Mesut Taskin and Ahmet Adiguzel. The first draft of the manuscript was written by Ahmet Adiguzel and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

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Correspondence to Ahmet Adiguzel.

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This study does not contain any experiments with human participants or animals.

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Varol, A., Albayrak, S., Ozkan, H. et al. Production, purification and characterization of novel fibrinolytic enzyme from Bacillus atrophaeus V4. Biologia 78, 591–600 (2023). https://doi.org/10.1007/s11756-022-01281-7

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  • DOI: https://doi.org/10.1007/s11756-022-01281-7

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