Any feedback?
Please rate this page
(all_enzymes.php)
(0/150)

BRENDA support

1.17.1.4: xanthine dehydrogenase

This is an abbreviated version!
For detailed information about xanthine dehydrogenase, go to the full flat file.

Word Map on EC 1.17.1.4

Reaction

xanthine
+
NAD+
+
H2O
=
Urate
+
NADH
+
H+

Synonyms

AtXDH1, EC 1.1.1.204, EC 1.2.1.37, IAO1, More, NAD-xanthine dehydrogenase, PaoABC, Retinol dehydrogenase, Rosy locus protein, VvXDH, xanthine dehydrogenase, xanthine dehydrogenase-1, xanthine dehydrogenase-2, xanthine dehydrogenase/oxidase, xanthine oxidoreductase, xanthine-NAD oxidoreductase, xanthine/NAD+ oxidoreductase, xanthine:NAD+ oxidoreductase, XDH, XDH/XO, XDH1, XDH2, XdhC, XOR, YagR, YagS, YagT

ECTree

     1 Oxidoreductases
         1.17 Acting on CH or CH2 groups
             1.17.1 With NAD+ or NADP+ as acceptor
                1.17.1.4 xanthine dehydrogenase

General Stability

General Stability on EC 1.17.1.4 - xanthine dehydrogenase

Please wait a moment until all data is loaded. This message will disappear when all data is loaded.
GENERAL STABILITY
ORGANISM
UNIPROT
LITERATURE
complete loss of activity when stored below 0°C
-
conversion of xanthine oxidoreductase from dehydrogenase to oxidase form occurs in the presence of guanidine-HCl or urea. Both forms are in a thermodynamic equilibrium that can be shifted by disruption of the stabilizing amino acid cluster with a denaturant
crude and purified enzyme preparations form readily insoluble inactive aggregates, not stable to freezing and thawing
-
enzyme from crude extract can be stabilized by addition of nicotinamide, cysteine and EDTA, purified enzyme more stable
-
extremely labile
-
oxygen-linked activity rather unstable during storage at 4°C, ferricyanide-linked activity stable to freezing and thawing
-
subunit alpha more sensitive to SDS-heat treatment
-
treatment accelerating conversion of dehydrogenase type D to oxidase type O is lyophilization, storage at -20°C, exposure to 20% ammonium sulfate, 0.5 mM NAD+ or 0.01 mM xanthine
-