2.4.2.24: 1,4-beta-D-xylan synthase
This is an abbreviated version!
For detailed information about 1,4-beta-D-xylan synthase, go to the full flat file.
Word Map on EC 2.4.2.24
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2.4.2.24
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xylans
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polysaccharide
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glycosyltransferases
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glucuronoxylan
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arabinoxylans
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glucuronyltransferase
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hemicellulosic
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rhamnogalacturonan
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synthase-like
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arabinan
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mucilage
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xylooligomers
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biotechnology
- 2.4.2.24
- xylans
- polysaccharide
- glycosyltransferases
- glucuronoxylan
- arabinoxylans
-
glucuronyltransferase
-
hemicellulosic
- rhamnogalacturonan
-
synthase-like
- arabinan
- mucilage
-
xylooligomers
- biotechnology
Reaction
Synonyms
1,4-beta-xylan synthase, 1,4-beta-xylan xylosyltransferase, Arabidopsis thaliana cellulose synthase-like gene D family gene 5, ATCSLD, ATCSLD5, beta-(1,4)-xylosyltransferase, beta-1,4-xylan synthase, beta-1,4-XylT, EC 2.4.1.72, irregular xylem14, irregular xylem9, IRX10, IRX10L, IRX14, IRX9, PtrGT43B, PtrGT43C, synthase, 1,4-beta-xylan, xylan 1,4-beta-D-xylosyltransferase, xylan beta-1,4-xylosyltransferase, xylan synthase, xylan synthase-1, xylan synthetase, xylosyltransferase, uridine diphosphoxylose-1,4-beta-xylan, XylTase, Xys1
ECTree
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Source Tissue
Source Tissue on EC 2.4.2.24 - 1,4-beta-D-xylan synthase
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vasicular tissue, ATCSLD5 promoter driven beta-glucuronidase (GUS) expression
vasicular tissue, ATCSLD5 promoter driven beta-glucuronidase (GUS) expression
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enzyme activity varies according to developmental stage of the endosperm, overview
weak expression in cortical and pith cells, ATCSLD5 promoter driven beta-glucuronidase (GUS) expression
weak expression, ATCSLD5 promoter driven beta-glucuronidase (GUS) expression, possibly false positive due to loading of GUS reaction products via symplastic connections
shorter in absence of ATCSLD5 (ATCSLD5-1 mutant line) compared to wild-type plants, severe reduction in root length in presence of cellulose synthase inhibitor isoxaben abolished by complementation with wild-type ATCSLD5
vasicular tissue, ATCSLD5 promoter driven beta-glucuronidase (GUS) expression
additional information
cell layer of middle stem between second xylem interfasicular region and cortex corresponding to vascular cambium, ATCSLD5 promoter driven beta-glucuronidase (GUS) expression
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beta-1,4-D-xylan synthase is reduced by about 40% in qua1-1 stems relative to wild type
ATCSLD5-1 mutant line: reaction product 1,4-beta-D-xylan reduction most pronounced in top portion (independent of stem hight), absent from interfasicular tissue as revealed by immunocytochemistry
reaction product 1,4-beta-D-xylan detectable in top, middle and base portion, present in xylem and interfasicular tissue as revealed by immunocytochemistry, ATCSLD5 most abundant during stem elongation between day 21 and 25 (in silico analysis)
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XylT activity in microsomal fraction only in presence of exogenous Xyl(6), wild-type plant
absent from flowers and siliques, ATCSLD5 promoter driven beta-glucuronidase (GUS) expression
additional information
complete loss of ATCSLD5 expression in mutant line atcsld5-1 with T-DNA homozygote insertion in first exon of ATCSLD5 gene, revealed by RT-PCR from 6-week old plants
additional information
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no activity in mature seeds, no correlation between enzyme activity and xylan content in cell walls of different cultivars