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1.1.99.29: pyranose dehydrogenase (acceptor)

This is an abbreviated version!
For detailed information about pyranose dehydrogenase (acceptor), go to the full flat file.

Word Map on EC 1.1.99.29

Reaction

a pyranose
+
acceptor
=
a pyranos-2-ulose (or a pyranos-3-ulose or a pyranos-2,3-diulose)
+
reduced acceptor

Synonyms

AbPDH1, dehydrogenase, pyranose 2/3-, PDH, PDH AM, PDH AX, PDH1, PDH2, PDH3, pyranose 2-dehydrogenase, pyranose 2/3-dehydrogenase, pyranose 3-dehydrogenase, pyranose dehydrogenase, pyranose dehydrogenase 1, pyranose dehydrogenase 2, pyranose dehydrogenase 3, pyranose-quinone oxidoreductase, pyranose/acceptor oxidoreductase, pyranose:acceptor oxidoreductase, pyranose:quinone acceptor 2-oxidoreductase, quinone-dependent pyranose dehydrogenase

ECTree

     1 Oxidoreductases
         1.1 Acting on the CH-OH group of donors
             1.1.99 With unknown physiological acceptors
                1.1.99.29 pyranose dehydrogenase (acceptor)

Systematic Name

Systematic Name on EC 1.1.99.29 - pyranose dehydrogenase (acceptor)

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SYSTEMATIC NAME
IUBMB Comments
pyranose:acceptor oxidoreductase
Requires FAD. A number of aldoses and ketoses in pyranose form, as well as glycosides, gluco-oligosaccharides, sucrose and lactose can act as a donor. 1,4-Benzoquinone or ferricenium ion (ferrocene oxidized by removal of one electron) can serve as acceptor. Unlike EC 1.1.3.10, pyranose oxidase, this fungal enzyme does not interact with O2 and exhibits extremely broad substrate tolerance with variable regioselectivity (C-3, C-2 or C-3 + C-2 or C-3 + C-4) for (di)oxidation of different sugars. D-Glucose is exclusively or preferentially oxidized at C-3 (depending on the enzyme source), but can also be oxidized at C-2 + C-3. The enzyme also acts on 1->4-alpha- and 1->4-beta-gluco-oligosaccharides, non-reducing gluco-oligosaccharides and L-arabinose, which are not substrates of EC 1.1.3.10. Sugars are oxidized in their pyranose but not in their furanose form.