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Information on EC 1.14.11.33 - DNA oxidative demethylase and Organism(s) Escherichia coli and UniProt Accession P05050

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IUBMB Comments
Contains iron; activity is slightly stimulated by ascorbate. Catalyses oxidative demethylation of the DNA base lesions N1-methyladenine, N3-methylcytosine, N1-methylguanine, and N3-methylthymine. It works better on single-stranded DNA (ssDNA) and is capable of repairing damaged bases in RNA.
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This record set is specific for:
Escherichia coli
UNIPROT: P05050
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Word Map
The taxonomic range for the selected organisms is: Escherichia coli
The enzyme appears in selected viruses and cellular organisms
Reaction Schemes
Synonyms
alkbh3, alkbh2, alkbh8, alkb homolog 1, alkylated dna repair protein, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
1-methyladenine-DNA dioxygenase
-
-
alkylated DNA repair protein
-
-
-
-
alpha-ketoglutarate-dependent dioxygenase ABH1
-
-
-
-
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
oxidative demethylation
-
demethylation
-
-
oxidative demethylation
-
-
SYSTEMATIC NAME
IUBMB Comments
methyl DNA-base, 2-oxoglutarate:oxygen oxidoreductase (formaldehyde-forming)
Contains iron; activity is slightly stimulated by ascorbate. Catalyses oxidative demethylation of the DNA base lesions N1-methyladenine, N3-methylcytosine, N1-methylguanine, and N3-methylthymine. It works better on single-stranded DNA (ssDNA) and is capable of repairing damaged bases in RNA.
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
DNA-1,N6-ethenoadenine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-1,N6-ethenoadenine + 2-oxoglutarate + O2
DNA-adenine + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
?
DNA-1-(2-hydroxypropyl)-adenine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-1-ethanoadenine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-1-ethenoadenine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-1-ethyladenine + 2-oxoglutarate + O2
DNA-adenine + acetaldehyde + succinate + CO2
show the reaction diagram
-
-
-
ir
DNA-1-hydroxyethyladenine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-1-methyladenine + 2-oxoglutarate + O2
DNA-adenine + formaldehyde + succinate + CO2
show the reaction diagram
DNA-1-methylguanine + 2-oxoglutarate + O2
DNA-guanine + formaldehyde + succinate + CO2
show the reaction diagram
weak substrate
-
-
ir
DNA-2-furfurylguanosine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-2-methylguanosine + 2-oxoglutarate + O2
DNA-guanosine + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
?
DNA-3,N4-ethenocytosine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-3-methylcytosine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-3-methylcytosine + 2-oxoglutarate + O2
DNA-cytosine + formaldehyde + succinate + CO2
show the reaction diagram
DNA-3-methylthymine + 2-oxoglutarate + O2
DNA-thymine + formaldehyde + succinate + CO2
show the reaction diagram
DNA-4-methylcytosine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-base-CH3 + 2-oxoglutarate + O2
DNA-base + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
?
DNA-N1-methyladenine + 2-oxoglutarate + O2
DNA-adenine + formaldehyde + succinate + CO2
show the reaction diagram
highest activity
-
-
?
DNA-tetrahydro-2-furfurylguanosine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
methylated poly(deoxyadenine) + 2-oxoglutarate + O2
poly(deoxyadenine) + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
ir
methylated poly(deoxycytosine) + 2-oxoglutarate + O2
poly(deoxycytosine) + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
ir
1-methyl-dAMP + 2-oxoglutarate + O2
dAMP + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
1-methyl-dATP + 2-oxoglutarate + O2
dATP + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
2'-deoxy-1-methyl-adenosine 3'-phosphate + 2-oxoglutarate + O2
2'-deoxyadenosine 3'-phosphate + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
d(Tpm1A) + 2-oxoglutarate + O2
d(TpA) + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
d(Tpm1ApT) + 2-oxoglutarate + O2
d(TpApT) + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
DNA-1,6-ethenoadenine + O2
DNA-adenine + glyoxal
show the reaction diagram
-
-
-
-
?
DNA-1,N6-ethenoadenine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
-
?
DNA-1-methyladenine + 2-oxoglutarate + O2
DNA-adenine + formaldehyde + succinate + CO2
show the reaction diagram
DNA-1-methylguanine + 2-oxoglutarate + O2
DNA-guanine + formaldehyde + succinate + CO2
show the reaction diagram
DNA-3,N4-ethenocytosine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
-
?
DNA-3-methylcytosine + 2-oxoglutarate + O2
DNA-cytosine + formaldehyde + succinate + CO2
show the reaction diagram
DNA-3-methylthymine + 2-oxoglutarate + O2
DNA-thymine + formaldehyde + succinate + CO2
show the reaction diagram
DNA-base-CH3 + 2-oxoglutarate + O2
DNA-base + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
double-stranded DNA-1-methyladenine + 2-oxoglutarate + O2
DNA-adenine + formaldehyde + succinate + CO2
show the reaction diagram
-
major substrate, AlkB demethylates DNA-1-methyladenine and DNA-3-methylcytosine with comparable efficiencies and has only a modest preference for a single-stranded DNA substrate over its double-stranded DNA counterpart
-
-
?
double-stranded DNA-1-methyladenine + 2-oxoglutarate + O2
double-stranded DNA-adenine + formaldehyde + succinate + CO2
show the reaction diagram
-
major substrate, AlkB demethylates DNA-1-methyladenine and DNA-3-methylcytosine with comparable efficiencies and has only a modest preference for a single-stranded DNA substrate over its double-stranded DNA counterpart
-
-
?
double-stranded DNA-3-methylcytosine + 2-oxoglutarate + O2
DNA-cytosine + formaldehyde + succinate + CO2
show the reaction diagram
-
major substrate, AlkB demethylates DNA-1-methyladenine and DNA-3-methylcytosine with comparable efficiencies and has only a modest preference for a single-stranded DNA substrate over its double-stranded DNA counterpart
-
-
?
double-stranded DNA-3-methylcytosine + 2-oxoglutarate + O2
double-stranded DNA-cytosine + formaldehyde + succinate + CO2
show the reaction diagram
-
major substrate, AlkB demethylates DNA-1-methyladenine and DNA-3-methylcytosine with comparable efficiencies and has only a modest preference for a single-stranded DNA substrate over its double-stranded DNA counterpart
-
-
?
methylated luciferase-mRNA + 2-oxoglutarate + O2
luciferase-mRNA + formaldehyde + succinate + CO2
show the reaction diagram
-
AlkB is used at a maximal concentration of 0.00083 mM for this reaction since the luciferase-mRNA is degraded when higher AlkB concentrations are used
-
-
?
methylated poly(deoxyadenine) + 2-oxoglutarate + O2
poly(deoxyadenine) + formaldehyde + succinate + CO2
show the reaction diagram
methylated poly(deoxycytosine) + 2-oxoglutarate + O2
poly(deoxycytosine) + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
methylated poly(deoxythymine) + 2-oxoglutarate + O2
poly(deoxythymine) + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
methylated single-stranded poly(deoxyadenosine) + 2-oxoglutarate + O2
single-stranded poly(deoxyadenosine) + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
methylated tRNA-Phe + 2-oxoglutarate + O2
tRNA-Phe + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
N1-methyl-ATP + 2-oxoglutarate + O2
ATP + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
N1-methyladenine + 2-oxoglutarate + O2
adenine + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
N1-methyladenine in DNA + 2-oxoglutarate + O2
adenine in DNA + formaldehyde + succinate + CO2
show the reaction diagram
-
strong substrate in ss-DNA
-
-
?
N1-methylguanine in DNA + 2-oxoglutarate + O2
guanine in DNA + formaldehyde + succinate + CO2
show the reaction diagram
-
weak substrate in ds-DNA
-
-
?
N3-methylcytosine + 2-oxoglutarate + O2
cytosine + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
N3-methylcytosine in DNA + 2-oxoglutarate + O2
cytosine in DNA + formaldehyde + succinate + CO2
show the reaction diagram
-
strong substrate in ss-DNA
-
-
?
N3-methylthymine in DNA + 2-oxoglutarate + O2
thymine in DNA + formaldehyde + succinate + CO2
show the reaction diagram
-
weak substrate in ds-DNA
-
-
?
N6-methyladenine + 2-oxoglutarate + O2
adenine + formaldehyde + succinate + CO2
show the reaction diagram
-
via 6-hydroxymethyl adenine derivative
-
-
?
poly(dm1A) + 2-oxoglutarate + O2
poly(dA) + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
RNA-1-methyladenine + 2-oxoglutarate + O2
RNA-adenine + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
RNA-3-methylcytosine + 2-oxoglutarate + O2
RNA-cytosine + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
RNA-base-CH3 + 2-oxoglutarate + O2
RNA-base + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
single-stranded DNA-1-methyladenine + 2-oxoglutarate + O2
DNA-adenine + formaldehyde + succinate + CO2
show the reaction diagram
-
major substrate, AlkB demethylates DNA-1-methyladenine and DNA-3-methylcytosine with comparable efficiencies and has only a modest preference for a single-stranded DNA substrate over its double-stranded DNA counterpart
-
-
?
single-stranded DNA-1-methyladenine + 2-oxoglutarate + O2
single-stranded DNA-adenine + formaldehyde + succinate + CO2
show the reaction diagram
-
major substrate, AlkB demethylates DNA-1-methyladenine and DNA-3-methylcytosine with comparable efficiencies and has only a modest preference for a single-stranded DNA substrate over its double-stranded DNA counterpart
-
-
?
single-stranded DNA-3-methylcytosine + 2-oxoglutarate + O2
DNA-cytosine + formaldehyde + succinate + CO2
show the reaction diagram
-
major substrate, AlkB demethylates DNA-1-methyladenine and DNA-3-methylcytosine with comparable efficiencies and has only a modest preference for a single-stranded DNA substrate over its double-stranded DNA counterpart
-
-
?
single-stranded DNA-3-methylcytosine + 2-oxoglutarate + O2
single-stranded DNA-cytosine + formaldehyde + succinate + CO2
show the reaction diagram
-
major substrate, AlkB demethylates DNA-1-methyladenine and DNA-3-methylcytosine with comparable efficiencies and has only a modest preference for a single-stranded DNA substrate over its double-stranded DNA counterpart
-
-
?
tRNA-1-methylguanine + 2-oxoglutarate + O2
tRNA-guanine + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
additional information
?
-
NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
DNA-1,N6-ethenoadenine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-1,N6-ethenoadenine + 2-oxoglutarate + O2
DNA-adenine + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
?
DNA-1-(2-hydroxypropyl)-adenine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-1-ethanoadenine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-1-ethenoadenine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-1-hydroxyethyladenine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-1-methyladenine + 2-oxoglutarate + O2
DNA-adenine + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
?
DNA-2-furfurylguanosine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-2-methylguanosine + 2-oxoglutarate + O2
DNA-guanosine + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
?
DNA-3,N4-ethenocytosine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-3-methylcytosine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-3-methylcytosine + 2-oxoglutarate + O2
DNA-cytosine + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
?
DNA-4-methylcytosine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-base-CH3 + 2-oxoglutarate + O2
DNA-base + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
?
DNA-tetrahydro-2-furfurylguanosine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
?
DNA-1,N6-ethenoadenine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
-
?
DNA-1-methylguanine + 2-oxoglutarate + O2
DNA-guanine + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
DNA-3,N4-ethenocytosine + 2-oxoglutarate + O2
?
show the reaction diagram
-
-
-
-
?
DNA-3-methylthymine + 2-oxoglutarate + O2
DNA-thymine + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
DNA-base-CH3 + 2-oxoglutarate + O2
DNA-base + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
double-stranded DNA-1-methyladenine + 2-oxoglutarate + O2
DNA-adenine + formaldehyde + succinate + CO2
show the reaction diagram
-
major substrate, AlkB demethylates DNA-1-methyladenine and DNA-3-methylcytosine with comparable efficiencies and has only a modest preference for a single-stranded DNA substrate over its double-stranded DNA counterpart
-
-
?
double-stranded DNA-3-methylcytosine + 2-oxoglutarate + O2
DNA-cytosine + formaldehyde + succinate + CO2
show the reaction diagram
-
major substrate, AlkB demethylates DNA-1-methyladenine and DNA-3-methylcytosine with comparable efficiencies and has only a modest preference for a single-stranded DNA substrate over its double-stranded DNA counterpart
-
-
?
N1-methyladenine + 2-oxoglutarate + O2
adenine + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
N3-methylcytosine + 2-oxoglutarate + O2
cytosine + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
N6-methyladenine + 2-oxoglutarate + O2
adenine + formaldehyde + succinate + CO2
show the reaction diagram
-
via 6-hydroxymethyl adenine derivative
-
-
?
RNA-base-CH3 + 2-oxoglutarate + O2
RNA-base + formaldehyde + succinate + CO2
show the reaction diagram
-
-
-
-
?
single-stranded DNA-1-methyladenine + 2-oxoglutarate + O2
DNA-adenine + formaldehyde + succinate + CO2
show the reaction diagram
-
major substrate, AlkB demethylates DNA-1-methyladenine and DNA-3-methylcytosine with comparable efficiencies and has only a modest preference for a single-stranded DNA substrate over its double-stranded DNA counterpart
-
-
?
single-stranded DNA-3-methylcytosine + 2-oxoglutarate + O2
DNA-cytosine + formaldehyde + succinate + CO2
show the reaction diagram
-
major substrate, AlkB demethylates DNA-1-methyladenine and DNA-3-methylcytosine with comparable efficiencies and has only a modest preference for a single-stranded DNA substrate over its double-stranded DNA counterpart
-
-
?
additional information
?
-
-
exocyclic carbons adjacent to the N6 of adenine are targets for oxidation by the Escherichia coli adaptive response protein AlkB
-
-
?
COFACTOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
2-oxoglutarate
-
METALS and IONS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
ACTIVATING COMPOUND
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
ascorbate
2 m ascorbate is used in assay conditions
KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.002
DNA-N1-methyladenine
wild type enzyme, pH and temperature not specified in the publication
-
0.002
1-methyl-dAMP
-
apparent value, at 37°C, pH not specified in the publication
0.0055
1-methyl-dATP
-
apparent value, at 37°C, pH not specified in the publication
0.012
2'-deoxy-1-methyl-adenosine 3'-phosphate
-
apparent value, at 37°C, pH not specified in the publication
0.0044 - 0.05
d(Tpm1A)
0.0028
d(Tpm1ApT)
-
apparent value, at 37°C, pH not specified in the publication
0.0062
double-stranded DNA-1-methyladenine
-
at 25°C, pH not specified in the publication
-
0.0093
double-stranded DNA-3-methylcytosine
-
at 25°C, pH not specified in the publication
-
0.01
N1-methyl-ATP
-
apparent value, at 37°C, pH not specified in the publication
0.0014
poly(dm1A)
-
apparent value, at 37°C, pH not specified in the publication
-
0.0054
single-stranded DNA-1-methyladenine
-
at 25°C, pH not specified in the publication
-
0.0034
single-stranded DNA-3-methylcytosine
-
at 25°C, pH not specified in the publication
-
TURNOVER NUMBER [1/s]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
0.1235
DNA-N1-methyladenine
wild type enzyme, pH and temperature not specified in the publication
-
0.07
1-methyl-dAMP
-
at 37°C, pH not specified in the publication
0.033
1-methyl-dATP
-
at 37°C, pH not specified in the publication
0.012
2'-deoxy-1-methyl-adenosine 3'-phosphate
-
at 37°C, pH not specified in the publication
0.06
d(Tpm1A)
-
at 37°C, pH not specified in the publication
0.12
d(Tpm1ApT)
-
at 37°C, pH not specified in the publication
0.052
double-stranded DNA-1-methyladenine
-
at 25°C, pH not specified in the publication
-
0.055
double-stranded DNA-3-methylcytosine
-
at 25°C, pH not specified in the publication
-
0.02
N1-methyl-ATP
-
at 37°C, pH not specified in the publication
0.2
poly(dm1A)
-
at 37°C, pH not specified in the publication
-
0.062
single-stranded DNA-1-methyladenine
-
at 25°C, pH not specified in the publication
-
0.037
single-stranded DNA-3-methylcytosine
-
at 25°C, pH not specified in the publication
-
kcat/KM VALUE [1/mMs-1]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
61.8
DNA-N1-methyladenine
wild type enzyme, pH and temperature not specified in the publication
-
1.7
1-methyl-ATP
-
at 37°C, pH not specified in the publication
35
1-methyl-dAMP
-
at 37°C, pH not specified in the publication
11.7
1-methyl-dATP
-
at 37°C, pH not specified in the publication
3.3
2'-deoxy-1-methyl-adenosine 3'-phosphate
-
at 37°C, pH not specified in the publication
43
d(Tpm1ApT)
-
at 37°C, pH not specified in the publication
8
double-stranded DNA-1-methyladenine
-
at 25°C, pH not specified in the publication
-
5.8
double-stranded DNA-3-methylcytosine
-
at 25°C, pH not specified in the publication
-
143
poly(dm1A)
-
at 37°C, pH not specified in the publication
-
11.3
single-stranded DNA-1-methyladenine
-
at 25°C, pH not specified in the publication
-
10.8
single-stranded DNA-3-methylcytosine
-
at 25°C, pH not specified in the publication
-
pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
6
-
repair of DNA-3-methylthymine by AlkB is optimal at pH 6.0, but inefficient
7
-
assay at
7.6 - 8
-
DNA-3-methylcytosine is repaired optimally at pH 7.5-8.0
8
-
assay at
TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
malfunction
physiological function
additional information
-
the recombinant AlkB expressed is less active than the natural endogenous form
CRYSTALLIZATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
AlkB in complex with double-stranded DNA containing 1,N6-ethenoadenine, 3-methylthymine, and 3-methylcytosine, using 100 mM NaCl, 25 mM MgCl2, 100 mM cacodylate (pH 6.5) and 20-24% (w/v) PEG 8K or 4K
PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
D135A
the mutant displays about 5-15% of wild type activity towards 1-methyladenine at pH 7.0
D135I
the mutant shows increased activity with RNA-N6-methyladenine and reduced activity with DNA-N1-methyladenine compared to the wild type enzyme
D135N
D135S
the mutant displays about 5-15% of wild type activity towards 1-methyladenine at pH 7.0
E136L
the mutant shows increased activity with RNA-N6-methyladenine and reduced activity with DNA-N1-methyladenine compared to the wild type enzyme
D133C
-
the mutant contains no iron and shows indistinguishable chromatographic behavior from that of wild type enzyme
H131C
-
the mutant contains no iron and shows indistinguishable chromatographic behavior from that of wild type enzyme
H187C
-
the mutant contains no iron and shows indistinguishable chromatographic behavior from that of wild type enzyme
STORAGE STABILITY
ORGANISM
UNIPROT
LITERATURE
the iron(II)-bound AlkB is reasonably stable at 4°C in the presence of 10 mM 2-mercaptoethanol at concentrations up to 2 mM
-
PURIFICATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
His-tagged AlkB is purified by Ni-NTA agarose column chromatography, untagged Alkb is purified by DEAE-cellulose column chromatography, Sepharose column chromatography, and Mono S column chromatography
Ni-NTA column chromatography and Mono-Q column chromatography
DEAE-cellulose column chromatography, S-Sepharose column chromatography, Ni-NTA column chromatography, and Mono-S cation exchange column chromatography
-
DEAE-cellulose column chromatography, SP Sepharose cation exchange column chromatography, and Mono-S cation exchange column chromatography
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GSTrap column chromatography
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Ni-NTA agarose column chromatography
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Ni-NTA column chromatography
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Ni-NTA column chromatography and SP-Sepharose cation exchange affinity column chromatography
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Ni-NTA column chromatography and UnoS column chromatography
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CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
expressed in Escherichia coli BL21(DE3) cells
AlkB is expressed in Escherichia coli BL21(DE3) cells
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AlkB overexpression in Escherichia coli AlkB-deficient strains HK82 and BW25113. AlkB mutant strain HK82 is transformed with the low-copy-number expression plasmid pJB658 containing the alkB gene following a toluic acid-inducible promoter. The recombinant AlkB expressed is less active than the natural endogenous form
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expressed in Escherichia coli B834lambda (DE3) cells
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expressed in Escherichia coli BL21 Star(DE3)pLysS cells
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expressed in Escherichia coli BL21(DE3) cells
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REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Yi, C.; Yang, C.G.; He, C.
A non-heme iron-mediated chemical demethylation in DNA and RNA
Acc. Chem. Res.
42
519-529
2009
Escherichia coli, Homo sapiens
Manually annotated by BRENDA team
Mishina, Y.; Chen, L.X.; He, C.
Preparation and characterization of the native iron(II)-containing DNA repair AlkB protein directly from Escherichia coli
J. Am. Chem. Soc.
126
16930-16936
2004
Escherichia coli
Manually annotated by BRENDA team
Koivisto, P.; Duncan, T.; Lindahl, T.; Sedgwick, B.
Minimal methylated substrate and extended substrate range of Escherichia coli AlkB protein, a 1-methyladenine-DNA dioxygenase
J. Biol. Chem.
278
44348-44354
2003
Escherichia coli, Homo sapiens
Manually annotated by BRENDA team
Koivisto, P.; Robins, P.; Lindahl, T.; Sedgwick, B.
Demethylation of 3-methylthymine in DNA by bacterial and human DNA dioxygenases
J. Biol. Chem.
279
40470-40474
2004
Escherichia coli, Homo sapiens
Manually annotated by BRENDA team
Sedgwick, B.; Robins, P.; Lindahl, T.
Direct removal of alkylation damage from DNA by AlkB and related DNA dioxygenases
Methods Enzymol.
408
108-120
2006
Escherichia coli (P05050), Homo sapiens (Q6NS38), Homo sapiens (Q96Q83)
Manually annotated by BRENDA team
Ougland, R.; Zhang, C.M.; Liiv, A.; Johansen, R.F.; Seeberg, E.; Hou, Y.M.; Remme, J.; Falnes, P.O.
AlkB restores the biological function of mRNA and tRNA inactivated by chemical methylation
Mol. Cell
16
107-116
2004
Escherichia coli, Homo sapiens
Manually annotated by BRENDA team
Trewick, S.C.; Henshaw, T.F.; Hausinger, R.P.; Lindahl, T.; Sedgwick, B.
Oxidative demethylation by Escherichia coli AlkB directly reverts DNA base damage
Nature
419
174-178
2002
Escherichia coli
Manually annotated by BRENDA team
Falnes, P.O.; Johansen, R.F.; Seeberg, E.
AlkB-mediated oxidative demethylation reverses DNA damage in Escherichia coli
Nature
419
178-182
2002
Escherichia coli, Escherichia coli W3110 / ATCC 27325
Manually annotated by BRENDA team
Aas, P.A.; Otterlei, M.; Falnes, P.O.; Vagbo, C.B.; Skorpen, F.; Akbari, M.; Sundheim, O.; Bjoras, M.; Slupphaug, G.; Seeberg, E.; Krokan, H.E.
Human and bacterial oxidative demethylases repair alkylation damage in both RNA and DNA
Nature
421
859-863
2003
Escherichia coli, Homo sapiens, Homo sapiens (Q96Q83)
Manually annotated by BRENDA team
Yi, C.; Jia, G.; Hou, G.; Dai, Q.; Zhang, W.; Zheng, G.; Jian, X.; Yang, C.G.; Cui, Q.; He, C.
Iron-catalysed oxidation intermediates captured in a DNA repair dioxygenase
Nature
468
330-333
2010
Escherichia coli (P05050)
Manually annotated by BRENDA team
Mishina, Y.; Lee, C.H.; He, C.
Interaction of human and bacterial AlkB proteins with DNA as probed through chemical cross-linking studies
Nucleic Acids Res.
32
1548-1554
2004
Escherichia coli, Homo sapiens
Manually annotated by BRENDA team
Falnes, P.O.; Bjoras, M.; Aas, P.A.; Sundheim, O.; Seeberg, E.
Substrate specificities of bacterial and human AlkB proteins
Nucleic Acids Res.
32
3456-3461
2004
Escherichia coli, Homo sapiens
Manually annotated by BRENDA team
Falnes, P.O.
Repair of 3-methylthymine and 1-methylguanine lesions by bacterial and human AlkB proteins
Nucleic Acids Res.
32
6260-6267
2004
Escherichia coli, Homo sapiens
Manually annotated by BRENDA team
Roy, T.W.; Bhagwat, A.S.
Kinetic studies of Escherichia coli AlkB using a new fluorescence-based assay for DNA demethylation
Nucleic Acids Res.
35
e147
2007
Escherichia coli
Manually annotated by BRENDA team
van den Born, E.; Omelchenko, M.V.; Bekkelund, A.; Leihne, V.; Koonin, E.V.; Dolja, V.V.; Falnes, P.?.
Viral AlkB proteins repair RNA damage by oxidative demethylation
Nucleic Acids Res.
36
5451-5461
2008
Blackberry virus Y, blueberry scorch virus, Escherichia coli, grapevine virus A
Manually annotated by BRENDA team
Begley, T.J.; Samson, L.D.
AlkB mystery solved: oxidative demethylation of N1-methyladenine and N3-methylcytosine adducts by a direct reversal mechanism
Trends Biochem. Sci.
28
2-5
2003
Escherichia coli
Manually annotated by BRENDA team
Vagbo, C.B.; Svaasand, E.K.; Aas, P.A.; Krokan, H.E.
Methylation damage to RNA induced in vivo in Escherichia coli is repaired by endogenous AlkB as part of the adaptive response
DNA Repair
12
188-195
2013
Escherichia coli, Escherichia coli AB1157
Manually annotated by BRENDA team
Li, D.; Delaney, J.C.; Page, C.M.; Yang, X.; Chen, A.S.; Wong, C.; Drennan, C.L.; Essigmann, J.M.
Exocyclic carbons adjacent to the N6 of adenine are targets for oxidation by the Escherichia coli adaptive response protein AlkB
J. Am. Chem. Soc.
134
8896-8901
2012
Escherichia coli
Manually annotated by BRENDA team
Chen, F.; Tang, Q.; Bian, K.; Humulock, Z.; Yang, X.; Jost, M.; Drennan, C.; Essigmann, J.; Li, D.
Adaptive response enzyme AlkB preferentially repairs 1-methylguanine and 3-methylthymine adducts in double-stranded DNA
Chem. Res. Toxicol.
29
687-693
2016
Escherichia coli
Manually annotated by BRENDA team
Zhu, C.; Yi, C.
Switching demethylation activities between AlkB family RNA/DNA demethylases through exchange of active-site residues
Angew. Chem. Int. Ed. Engl.
53
3659-3662
2014
Escherichia coli (P05050)
Manually annotated by BRENDA team
Wang, B.; Usharani, D.; Li, C.; Shaik, S.
Theory uncovers an unusual mechanism of DNA repair of a lesioned adenine by AlkB enzymes
J. Am. Chem. Soc.
136
13895-13901
2014
Escherichia coli (P05050)
Manually annotated by BRENDA team
Ergel, B.; Gill, M.L.; Brown, L.; Yu, B.; Palmer, A.G.; Hunt, J.F.
Protein dynamics control the progression and efficiency of the catalytic reaction cycle of the Escherichia coli DNA-repair enzyme AlkB
J. Biol. Chem.
289
29584-29601
2014
Escherichia coli
Manually annotated by BRENDA team
Tishinov, K.; Gillingham, D.
Synthesis of new alkylated mononucleotide analogues and their repair proficiency by the prokaryotic DNA repair protein AlkB
Synlett
26
2720-2723
2015
Escherichia coli (P05050)
-
Manually annotated by BRENDA team