Arabidopsis GT34 family contains five xyloglucan α-1,6-xylosyltransferases

© 2012 The Authors. New Phytologist © 2012 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 195(2012), 3 vom: 02. Aug., Seite 585-595
1. Verfasser: Vuttipongchaikij, Supachai (VerfasserIn)
Weitere Verfasser: Brocklehurst, David, Steele-King, Clare, Ashford, David A, Gomez, Leonardo D, McQueen-Mason, Simon J
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2012
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Arabidopsis Proteins Epitopes Glucans Recombinant Fusion Proteins Xylans xyloglucan 37294-28-3 Pentosyltransferases mehr... EC 2.4.2.- xyloglucan xylosyltransferase
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100 1 |a Vuttipongchaikij, Supachai  |e verfasserin  |4 aut 
245 1 0 |a Arabidopsis GT34 family contains five xyloglucan α-1,6-xylosyltransferases 
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520 |a © 2012 The Authors. New Phytologist © 2012 New Phytologist Trust. 
520 |a The Arabidopsis genome includes seven family 34 glycosyltransferase (GT34) encoding genes. XXT1 and XXT2 have previously been shown to encode XyG α-1,6-xylosyltransferases, while knockout mutants of a third, XXT5, exhibit decreased XyG content, suggesting a similar activity. Here, we extend the study to the rest of the Arabidopsis GT34 genes in terms of biochemical activity and their roles in XyG biosynthesis. The enzyme activity of XXTs was investigated using recombinant protein expressed in E. coli. XyG analysis of single and double T-DNA insertion knockouts, together with overexpression of GT34s in selected mutant lines, provided detailed function of each gene. We reveal the activity of the third member of the GT34 gene family (XXT4) that exhibits xylosyltransferase activity. Double mutants for either xxt2 or xxt5 had a large impact on XyG content, structure and size distribution. Overexpression of the remaining member, XXT3, was able to restore XyG epitopes in xxt2, xxt5 and xxt2 xxt5 double knockouts, suggesting that it also encodes a protein with XXT activity. Our work demonstrates that five of the seven Arabidopsis GT34 genes encode XXT enzymes 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 7 |a Arabidopsis Proteins  |2 NLM 
650 7 |a Epitopes  |2 NLM 
650 7 |a Glucans  |2 NLM 
650 7 |a Recombinant Fusion Proteins  |2 NLM 
650 7 |a Xylans  |2 NLM 
650 7 |a xyloglucan  |2 NLM 
650 7 |a 37294-28-3  |2 NLM 
650 7 |a Pentosyltransferases  |2 NLM 
650 7 |a EC 2.4.2.-  |2 NLM 
650 7 |a xyloglucan xylosyltransferase  |2 NLM 
650 7 |a EC 2.4.2.-  |2 NLM 
700 1 |a Brocklehurst, David  |e verfasserin  |4 aut 
700 1 |a Steele-King, Clare  |e verfasserin  |4 aut 
700 1 |a Ashford, David A  |e verfasserin  |4 aut 
700 1 |a Gomez, Leonardo D  |e verfasserin  |4 aut 
700 1 |a McQueen-Mason, Simon J  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t The New phytologist  |d 1979  |g 195(2012), 3 vom: 02. Aug., Seite 585-595  |w (DE-627)NLM09818248X  |x 1469-8137  |7 nnns 
773 1 8 |g volume:195  |g year:2012  |g number:3  |g day:02  |g month:08  |g pages:585-595 
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