Functional characterisation of a putative rhamnogalacturonan II specific xylosyltransferase.
FEBS Lett
; 582(21-22): 3217-22, 2008 Sep 22.
Article
em En
| MEDLINE
| ID: mdl-18755189
ABSTRACT
An Arabidopsis thaliana gene, At1g56550, was expressed in Pichia pastoris and the recombinant protein was shown to catalyse transfer of D-xylose from UDP-alpha-D-xylose onto methyl alpha-L-fucoside. The product formed was shown by 1D and 2D 1H NMR spectroscopy to be Me alpha-D-Xyl-(1,3)-alpha-L-Fuc, which is identical to the proposed target structure in the A-chain of rhamnogalacturonan II. Chemically synthesized methyl L-fucosides derivatized by methyl groups on either the 2-, 3- or 4 position were tested as acceptor substrates but only methyl 4-O-methyl-alpha-L-fucopyranoside acted as an acceptor, although to a lesser extent than methyl alpha-L-fucoside. At1g56550 is suggested to encode a rhamnogalacturonan II specific xylosyltransferase.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Pentosiltransferases
/
Pectinas
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Arabidopsis
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Proteínas de Arabidopsis
Idioma:
En
Ano de publicação:
2008
Tipo de documento:
Article