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1.13.11.5: homogentisate 1,2-dioxygenase

This is an abbreviated version!
For detailed information about homogentisate 1,2-dioxygenase, go to the full flat file.

Word Map on EC 1.13.11.5

Reaction

homogentisate
+
O2
=
4-Maleylacetoacetate

Synonyms

EC 1.13.1.5, EC 1.99.2.5, ElHDO, HgD, HGDO, HGO, HGOa, HGOb, HmgA, homogentisate 1,2 dioxigenase, homogentisate 1,2 dioxygenase, homogentisate 1,2-dioxygenase, homogentisate dioxygenase, homogentisate oxidase, homogentisate oxygenase, homogentisate phytyl-transferase, homogentisic acid 1,2-dioxygenase, homogentisic acid oxidase, homogentisic acid oxygenase, homogentisic oxygenase, homogentisicase, HPT, HTO

ECTree

     1 Oxidoreductases
         1.13 Acting on single donors with incorporation of molecular oxygen (oxygenases)
             1.13.11 With incorporation of two atoms of oxygen
                1.13.11.5 homogentisate 1,2-dioxygenase

Engineering

Engineering on EC 1.13.11.5 - homogentisate 1,2-dioxygenase

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PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
D120A
ADH05034.1
transformant shows a non-pigmented phenotype
F136A
ADH05034.1
transformant shows a pigmented phenotype
G119A
ADH05034.1
transformant shows a non-pigmented phenotype
G128A
ADH05034.1
transformant shows a pigmented phenotype
G241A
ADH05034.1
transformant shows a pigmented phenotype
G272E
ADH05034.1
mutation is responsible for pigment overproduction in Bacillus thuringiensis BMB181
G323A
ADH05034.1
transformant shows a non-pigmented phenotype
G89A
ADH05034.1
transformant shows a non-pigmented phenotype
H261A
ADH05034.1
transformant shows a pigmented phenotype
H334A
ADH05034.1
transformant shows a pigmented phenotype
K219A
ADH05034.1
transformant shows a non-pigmented phenotype
N116A
ADH05034.1
transformant shows a non-pigmented phenotype
N300A
ADH05034.1
transformant shows a non-pigmented phenotype
P245A
ADH05034.1
transformant shows a non-pigmented phenotype
P336A
ADH05034.1
transformant shows a pigmented phenotype
D120A
-
transformant shows a non-pigmented phenotype
-
F136A
-
transformant shows a pigmented phenotype
-
H261A
-
transformant shows a pigmented phenotype
-
H334A
-
transformant shows a pigmented phenotype
-
N300A
-
transformant shows a non-pigmented phenotype
-
R378G
A122D
C1273A
naturally occuring mutation, the mutation is involved in alkaptonuria
E401Q
the missense variant E401Q is responsible for development of Alkaptonuria
E42A
the mutant shows strongly reduced specific activity compared to the wild type enzyme
G161R
-
naturally occuring mutation in the HGD gene, resulting in a specific genotype appearing in a Hungarian population, originating from Slovakia, with alkaptonuria, phenotype overview
G360R
active site mutation in exon 13
H80Q
the mutant shows slightly reduced specific activity compared to the wild type enzyme
I216T
the mutant shows strongly reduced specific activity compared to the wild type enzyme
K57N
active site mutation in exon 3
M368V
the mutant shows strongly reduced specific activity compared to the wild type enzyme
R225H
the mutant shows strongly reduced specific activity compared to the wild type enzyme
S189I
the mutant shows strongly reduced specific activity compared to the wild type enzyme
T1046G
naturally occuring mutation, the mutation is involved in alkaptonuria
T533G
naturally occuring mutation, the mutation is involved in alkaptonuria
T847C
naturally occuring mutation, the mutation is involved in alkaptonuria
V300G
Y62C
the mutant shows strongly reduced specific activity compared to the wild type enzyme
H288Q
site-directed mutagenesis, the mutant shows a 75fold reduction in kcat compared to the wild-type enzyme
Y346F
site-directed mutagenesis, replacement of Y346 by phenylalanine decreases the affinity for homogentisate more than 60fold and reduces the apparent kcat 20fold resulting in a decrease of the specificity constant by three orders of magnitude compared to the wild-type enzyme
H288Q
-
site-directed mutagenesis, the mutant shows a 75fold reduction in kcat compared to the wild-type enzyme
-
Y346F
-
site-directed mutagenesis, replacement of Y346 by phenylalanine decreases the affinity for homogentisate more than 60fold and reduces the apparent kcat 20fold resulting in a decrease of the specificity constant by three orders of magnitude compared to the wild-type enzyme
-
additional information