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Takahashi J, Rudsander UJ, Hedenström M, Banasiak A, Harholt J, Amelot N, Immerzeel P, Ryden P, Endo S, Ibatullin FM, Brumer H, del Campillo E, Master ER, Vibe Scheller H, Sundberg B, Teeri TT, Mellerowicz EJ. KORRIGAN1 and its Aspen Homolog PttCel9A1 Decrease Cellulose Crystallinity in Arabidopsis Stems. ACTA ACUST UNITED AC 2009; 50:1099-115. [DOI: 10.1093/pcp/pcp062] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Rudsander UJ, Sandstrom C, Piens K, Master ER, Wilson DB, Brumer III H, Kenne L, Teeri TT. Comparative NMR Analysis of Cellooligosaccharide Hydrolysis by GH9 Bacterial and Plant Endo-1,4-β-glucanases. Biochemistry 2008; 47:5235-41. [DOI: 10.1021/bi702193e] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ulla J. Rudsander
- KTH Biotechnology, Swedish Center for Biomimetic Fiber Engineering, AlbaNova, SE-10691 Stockholm, Sweden, Department of Chemistry, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden, and Department of Molecular Biology and Genetics, Cornell University, 458 Biotechnology Building, Ithaca, New York 14853-2703
| | - Corine Sandstrom
- KTH Biotechnology, Swedish Center for Biomimetic Fiber Engineering, AlbaNova, SE-10691 Stockholm, Sweden, Department of Chemistry, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden, and Department of Molecular Biology and Genetics, Cornell University, 458 Biotechnology Building, Ithaca, New York 14853-2703
| | - Kathleen Piens
- KTH Biotechnology, Swedish Center for Biomimetic Fiber Engineering, AlbaNova, SE-10691 Stockholm, Sweden, Department of Chemistry, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden, and Department of Molecular Biology and Genetics, Cornell University, 458 Biotechnology Building, Ithaca, New York 14853-2703
| | - Emma R. Master
- KTH Biotechnology, Swedish Center for Biomimetic Fiber Engineering, AlbaNova, SE-10691 Stockholm, Sweden, Department of Chemistry, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden, and Department of Molecular Biology and Genetics, Cornell University, 458 Biotechnology Building, Ithaca, New York 14853-2703
| | - David B. Wilson
- KTH Biotechnology, Swedish Center for Biomimetic Fiber Engineering, AlbaNova, SE-10691 Stockholm, Sweden, Department of Chemistry, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden, and Department of Molecular Biology and Genetics, Cornell University, 458 Biotechnology Building, Ithaca, New York 14853-2703
| | - Harry Brumer III
- KTH Biotechnology, Swedish Center for Biomimetic Fiber Engineering, AlbaNova, SE-10691 Stockholm, Sweden, Department of Chemistry, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden, and Department of Molecular Biology and Genetics, Cornell University, 458 Biotechnology Building, Ithaca, New York 14853-2703
| | - Lennart Kenne
- KTH Biotechnology, Swedish Center for Biomimetic Fiber Engineering, AlbaNova, SE-10691 Stockholm, Sweden, Department of Chemistry, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden, and Department of Molecular Biology and Genetics, Cornell University, 458 Biotechnology Building, Ithaca, New York 14853-2703
| | - Tuula T. Teeri
- KTH Biotechnology, Swedish Center for Biomimetic Fiber Engineering, AlbaNova, SE-10691 Stockholm, Sweden, Department of Chemistry, Swedish University of Agricultural Sciences, P.O. Box 7015, SE-750 07 Uppsala, Sweden, and Department of Molecular Biology and Genetics, Cornell University, 458 Biotechnology Building, Ithaca, New York 14853-2703
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Master ER, Rudsander UJ, Zhou W, Henriksson H, Divne C, Denman S, Wilson DB, Teeri TT. Recombinant expression and enzymatic characterization of PttCel9A, a KOR homologue from Populus tremula x tremuloides. Biochemistry 2004; 43:10080-9. [PMID: 15287736 DOI: 10.1021/bi049453x] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PttCel9A is a membrane-bound, family 9 glycosyl hydrolase from Populus tremula x tremuloides that is upregulated during secondary cell wall synthesis. The catalytic domain of PttCel9A, Delta(1-105)PttCel9A, was purified, and its activity was compared to TfCel9A and TfCel9B from Thermobifida fusca. Since aromatic amino acids involved in substrate binding at subsites -4, -3, and -2 are missing in PttCel9A, the activity of TfCel9A mutant enzymes W256S, W209A, and W313G was also investigated. Delta(1-105)PttCel9A hydrolyzed a comparatively narrow range of polymeric substrates, and the preferred substrate was (carboxymethyl)cellulose 4M. Moreover, Delta(1-105)PttCel9A did not hydrolyze oligosaccharides shorter than cellopentaose, whereas TfCel9A and TfCel9B hydrolyzed cellotetraose and cellotriose, respectively. These data suggest that the preferred substrates of PttCel9A are long, low-substituted, soluble cellulosic polymers. At 30 degrees C and pH 6.0, the kcat for cellohexaose of Delta(1-105)PttCel9A, TfCel9A, and TfCel9B were 0.023 +/- 0.001, 16.9 +/- 2.0, and 1.3 +/- 0.2, respectively. The catalytic efficiency (kcat/Km) of TfCel9B was 39% of that of TfCel9A, whereas the catalytic efficiency of Delta(1-105)PttCel9A was 0.04% of that of TfCel9A. Removing tryptophan residues at subsites -4, -3, and -2 decreased the efficiency of cellohexaose hydrolysis by TfCel9A. Mutation of W313 to G had the most drastic effect, producing a mutant enzyme with 1% of the catalytic efficiency of TfCel9A. The apparent narrow substrate range and catalytic efficiency of PttCel9A are correlated with a lack of aromatic amino acids in the substrate binding cleft and may be necessary to prevent excessive hydrolysis of cell wall polysaccharides during cell wall formation.
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Affiliation(s)
- Emma R Master
- Department of Biotechnology, Royal Institute of Technology (KTH), AlbaNova University Center, Stockholm, Sweden
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