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Updated: Jun 23, 2025

Pure Shift Nuclear Magnetic Resonance: a New Tool for Plant Metabolomics
Published on: July 31, 2021
1H, 13C and 15N backbone resonance assignment of Cel45A from Phanerochaete chrysosporium
Laura Okmane1, Mats Sandgren1, Jerry Ståhlberg1
1Department of Molecular Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Abstract:
A glycoside hydrolase family 45 (GH45) enzyme from the white-rot basidiomycete fungus Phanerochaete chrysosporium (PcCel45A) was expressed in Pichia pastoris with 13C and 15N labelling. A nearly complete assignment of 1H, 13C and 15N backbone resonances was obtained, as well as the secondary structure prediction based on the assigned chemical shifts using the TALOS-N software. The predicted secondary structure was almost identical to previously published crystal structures of the same enzyme, except for differences in the termini of the sequence. This is the first NMR study using an isotopically labelled GH45 enzyme.
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