Trametes versicolor ligninase: isozyme sequence homology and substrate specificity

Jönsson, L. (author): Division of Biochemistry, Chemical Center, University of Lund, Lund , Sweden

Karlsson, Olov (author): Department of Organic Chemistry, Chalmers University of Technology, University of Göteborg, Göteborg, Sweden

Lundquist, K. (author): Department of Organic Chemistry, Chalmers University of Technology, University of Göteborg, Göteborg, Sweden

Nyman, P. O. (author): Division of Biochemistry, Chemical Center, University of Lund, Lund , Sweden

(creator_code:org_t)

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

The substrate specificity of three ligninase isozymes from the white-rot fungus Trametes versicolor has been investigated using stereochemically defined synthetic dimeric models for lignin. The isozymes have been found to attack non-phenolic β-O-4 as well as β-1 lignin model compounds. This finding confirms the classification of the isozymes from T. versicolor as ligninases. The amino-terminal residues of the three isozymes from T. versicolor have been determined using Edman degradation. Minor differences found between the sequences suggest the existence of several structural genes for ligninase in T. versicolor. Comparisons have been made with the sequences of three previously reported ligninases from Phanerochaete chrysosporium, another lignin-degrading fungus. One of the sequences from P. chrysosporium is distinctly more similar to the T. versicolor isozymes than to the other two sequences from P. chrysosporium.

By the author/editor: Jönsson, L.; Karlsson, Olov; Lundquist, K.; Nyman, P. O.

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Industrial Biote ...; and Bio Materials

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