5.3.1.5: xylose isomerase This is an abbreviated version! For detailed information about xylose isomerase, go to the full flat file .
Reaction
alpha-D-xylopyranose =
alpha-D-xylufuranose
Synonyms D-XI, D-xylose aldose-ketose-isomerase, D-xylose isomerase, D-Xylose ketoisomerase, D-xylose ketol isomerase, D-xylose ketol-isomerase, D-xylose: ketol-isomerase, D-xylulose keto-isomerase, glucose isomerase, glucose/xylose isomerase, GXI, Isomerase, xylose, Maxazyme, Optisweet, SDXyI, Spezyme, Sweetase, Sweetzyme, Sweetzyme Q, Swetase, T80 xylose isomerase, TcaXI, TNXI, TthXI, XI, XYLA, XylC, xylose (glucose) isomerase, xylose isomerase
ECTree
Substrates Products
Substrates Products on EC 5.3.1.5 - xylose isomerase
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alpha-D-glucose
alpha-D-fructose
-
-
-
r
D-fructose
D-mannose
-
-
-
r
D-glyceraldehyde
dihydroxyacetone
-
-
-
?
D-ribose
D-ribulose
-
-
-
r
D-ribose
L-arabinose
-
-
-
r
D-xylopyranose
D-xylulose
-
-
-
?
glucose
fructose
-
-
-
-
?
L-arabinose
D-ribose
-
-
-
r
L-arabinose
D-ribulose
-
-
-
r
L-ribose
?
-
no increased reaction rate observed for mutant F26W
-
-
?
L-ribose
L-ribulose
-
-
-
?
L-ribulose
L-ribose
-
-
-
r
additional information
?
-
D-Arabinose
?
-
-
-
-
?
D-Fructose
?
-
compulsory order of binding: 1. Co2+ binds first to site 2 and then to site 1, then the D-fructose binds at site 1. At normal concentrations Mg2+ binds at site 1, then D-fructose, and then Mg2+ at site 2. At very high Mg2+ concentrations, above 10 mM, the order is Mg2+ at site1, Mg2+ at site 2, then D-fructose
-
-
?
D-fructose
D-glucose
-
-
-
-
r
D-fructose
D-glucose
-
-
-
-
r
D-glucose
?
-
lower efficiency
-
-
?
D-glucose
?
-
lower efficiency
-
-
?
D-glucose
?
-
lower efficiency
-
-
?
D-glucose
?
-
lower efficiency
-
-
?
D-glucose
?
-
lower efficiency
-
-
?
D-glucose
?
-
lower efficiency
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
r
D-Glucose
D-Fructose
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
r
D-Glucose
D-Fructose
-
-
-
-
r
D-Glucose
D-Fructose
-
-
-
r
D-Glucose
D-Fructose
-
-
-
r
D-Glucose
D-Fructose
-
-
-
-
r
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
maximum conversion rate of 48% at 60°C
-
r
D-Glucose
D-Fructose
-
-
maximum conversion rate of 48% at 60°C
-
r
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
Opuntia vulgaris
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
r
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
?
D-Glucose
D-Fructose
-
-
-
r
D-Glucose
D-Fructose
-
-
-
-
r
D-Glucose
D-Fructose
-
-
-
r
D-Glucose
D-Fructose
-
-
-
-
r
D-Glucose
D-Fructose
-
-
-
?
D-Glucose
D-Fructose
-
-
-
r
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
no activity
-
-
?
D-Glucose
D-Fructose
-
-
-
r
D-Glucose
D-Fructose
-
-
-
r
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
r
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
V185T mutation increases catalytic efficiency on glucose
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
with low efficiency
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
with low efficiency
-
-
?
D-Glucose
D-Fructose
-
-
-
r
D-Glucose
D-Fructose
-
-
-
-
r
D-Glucose
D-Fructose
-
-
-
r
D-Glucose
D-Fructose
-
-
-
r
D-Glucose
D-Fructose
-
-
-
?
D-Glucose
D-Fructose
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
?
D-Glucose
D-Fructose
-
-
-
-
r
D-Glucose
D-Fructose
-
-
-
-
?
D-Lyxose
D-Xylulose
-
-
-
r
D-Lyxose
D-Xylulose
-
-
-
r
D-Mannose
D-Fructose
-
-
-
r
D-Mannose
D-Fructose
-
-
-
r
D-Ribose
?
-
-
-
-
?
D-Ribose
?
-
weak effects
-
-
?
D-Ribose
?
-
weak effects
-
-
?
D-Ribose
?
-
weak effects
-
-
?
D-Ribose
?
-
weak effects
-
-
?
D-Ribose
?
-
no activity
-
-
?
D-Ribose
?
-
weak effects
-
-
?
D-Ribose
?
-
weak effects
-
-
?
D-Ribose
?
-
no activity
-
-
?
D-Xylose
?
-
-
-
-
?
D-Xylose
D-Xylulose
Actinomyces olivocinereus
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
Aerobacter levanicum
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
Bacillus sp. (in: Bacteria) No. KX-6
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
Brevibacterium pentosoaminoacidicum
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
r
D-Xylose
D-Xylulose
-
-
D-xylulose is an important intermediate in pentose metabolism
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
Lactobacillus gayonii
-
-
-
?
D-Xylose
D-Xylulose
Lactobacillus lycopersici
-
-
-
?
D-Xylose
D-Xylulose
Lactobacillus mannitopoeus
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
Opuntia vulgaris
-
-
-
-
?
D-Xylose
D-Xylulose
Paracolobacterium aerogenoides
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
strain 3045 does not grow on xylose
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
Streptococcus venuceus
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
Streptomyces diastaticus No. 7 M1033
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
Streptomyces nivens
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
r
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
part of xylose metabolism
-
r
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
r
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
first step in xylose metabolism
-
r
D-Xylose
D-Xylulose
-
first step of xylose metabolism
-
r
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
first step in xylose metabolism
-
r
D-Xylose
D-Xylulose
-
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
r
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
D-Xylose
D-Xylulose
-
-
-
?
L-Arabinose
?
-
poor substrate
-
-
?
L-Arabinose
?
-
weak effects
-
-
?
L-Arabinose
?
-
weak effects
-
-
?
L-Arabinose
?
-
weak effects
-
-
?
L-Arabinose
?
-
weak effects
-
-
?
L-Arabinose
?
-
no activity
-
-
?
L-Arabinose
?
-
weak effects
-
-
?
L-Arabinose
?
-
weak effects
-
-
?
L-Arabinose
?
-
no activity
-
-
?
L-arabinose
L-ribulose
-
-
-
-
r
L-arabinose
L-ribulose
-
-
-
-
?
L-arabinose
L-ribulose
low reaction efficiency
-
-
r
L-arabinose
L-ribulose
-
-
-
r
L-arabinose
L-ribulose
-
-
-
r
L-Rhamnose
?
-
-
-
-
?
additional information
?
-
-
the recombinant enzyme catalyzes also the isomerization of D-glucose to D-fructose
-
-
?
additional information
?
-
-
important enzyme in degradation of xylans and metabolizing D-xylose via the pentose phosphate pathway
-
-
?
additional information
?
-
-
important enzyme in degradation of xylans and metabolizing D-xylose via the pentose phosphate pathway
-
-
?