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International Journal of Medicinal Mushrooms
Главный редактор: Solomon P. Wasser (open in a new tab)

Выходит 12 номеров в год

ISSN Печать: 1521-9437

ISSN Онлайн: 1940-4344

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.2 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.4 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00066 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.34 SJR: 0.274 SNIP: 0.41 CiteScore™:: 2.8 H-Index: 37

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Purification and Characterization of a Novel Serine Protease from the Fruiting Bodies of a Rare Edible Medicinal Mushroom, Lyophyllum shimeji (Agaricomycetes)

Том 18, Выпуск 6, 2016, pp. 547-554
DOI: 10.1615/IntJMedMushrooms.v18.i6.90
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In this study, a novel protease with a molecular mass of 30 kDa was purified from Lyophyllum shimeji using a purification procedure that involved anion exchange chromatography on a Q-Sepharose column, cation chromatography on an SP-Sepharose column, and gel filtration on a Superdex 75 column. The protease was purified 57-fold, and its specific activity was 6.67 U/mg. Its inner amino acid sequence, determined by liquid chromatography-tandem mass spectrometry, contains AASIIAVLVLSDK, which has 93% identity with the sequence of Hypsizygus marmoreus serine protease. The optimal reaction temperature and pH for L. shimeji protease were 50°C and 10.0, respectively. It is an alkaline protease and has higher activity when the pH lies between 6.8 and 10.0. The Km and Vmax at 50°C and pH 9.0 were 1.32 mg/mL and 454.55 μg/mL/min, respectively. The activity of L. shimeji protease was significantly suppressed by Cd2+, Hg2+, Cu2+, and Fe3+ ions, as well as by phenylmethylsufonyl fluoride; therefore, it is a serine protease.

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