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Purification, characterization and mass spectrometric identification of two thermophilic xylanases from Sporotrichum thermophile

Paper ID Volume ID Publish Year Pages File Format Full-Text
35122 45076 2010 6 PDF Available
Title
Purification, characterization and mass spectrometric identification of two thermophilic xylanases from Sporotrichum thermophile
Abstract

Two xylanases were purified to electrophoretic homogeneity from the thermophilic fungus Sporotrichum thermophile grown in a submerged liquid culture using wheat straw as carbon source. The enzymes, StXyn1 and StXyn2, have molecular masses of 24 kDa and 48 kDa, respectively, and are optimally active at pH 5 and at 60 °C. Both enzymes displayed remarkable stability up to 50 °C for 1 h, exhibiting a half-life of 60 min (StXyn1) and 115 min (StXyn2) at 60 °C. Biochemical characterization of the two xylanases against poly- and oligosaccharides indicated that StXyn1 and StXyn2 hydrolytic profiles match those of xylanase family 11 and family 10, respectively. LC–MS/MS analysis provided peptide mass and sequence information that assisted the identification of the corresponding xylanase genes from the S. thermophile genome and the classification of the two purified StXyn1 and StXyn2 as a family GH11 and GH10 endo-1,4-β-xylanases, respectively.

Keywords
Sporotrichum thermophile; Endo-1,4-β-xylanase; Purification; Hemicellulose; Mass spectrometric sequencing
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Purification, characterization and mass spectrometric identification of two thermophilic xylanases from Sporotrichum thermophile
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 45, Issue 3, March 2010, Pages 419–424
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
Online Support
Any Questions? feel free to contact us