6bsw

Structural highlights

Function

[XXT1_ARATH] Xylosyltransferase specific to UDP-D-xylose that accepts both cellopentaose and cellohexaose as substrates, with a better use of cellohexaose, to produce xyloglucan. Adds preferentially the first xylosyl residue to the fourth glucosyl residue from the reducing end of both acceptors. Transfer one xylose mainly to the second glucose residue from the non-reducing end. The acceptor should have a minimum of four glucose residues.^{[1] [2] [3]}

References

1. ↑ Faik A, Price NJ, Raikhel NV, Keegstra K. An Arabidopsis gene encoding an alpha-xylosyltransferase involved in xyloglucan biosynthesis. Proc Natl Acad Sci U S A. 2002 May 28;99(11):7797-802. doi:, 10.1073/pnas.102644799. PMID:12032363 doi:http://dx.doi.org/10.1073/pnas.102644799
2. ↑ Cavalier DM, Keegstra K. Two xyloglucan xylosyltransferases catalyze the addition of multiple xylosyl residues to cellohexaose. J Biol Chem. 2006 Nov 10;281(45):34197-207. doi: 10.1074/jbc.M606379200. Epub, 2006 Sep 18. PMID:16982611 doi:http://dx.doi.org/10.1074/jbc.M606379200
3. ↑ Cavalier DM, Lerouxel O, Neumetzler L, Yamauchi K, Reinecke A, Freshour G, Zabotina OA, Hahn MG, Burgert I, Pauly M, Raikhel NV, Keegstra K. Disrupting two Arabidopsis thaliana xylosyltransferase genes results in plants deficient in xyloglucan, a major primary cell wall component. Plant Cell. 2008 Jun;20(6):1519-37. doi: 10.1105/tpc.108.059873. Epub 2008 Jun, 10. PMID:18544630 doi:http://dx.doi.org/10.1105/tpc.108.059873