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* Residue conservation analysis
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Gene Ontology (GO) functional annotation
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Cellular component
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cytosol
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1 term
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Biological process
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glycerol metabolic process
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3 terms
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Biochemical function
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protein binding
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4 terms
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DOI no:
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Biochemistry
43:13037-13045
(2004)
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PubMed id:
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Phosphoenolpyruvate- and ATP-dependent dihydroxyacetone kinases: covalent substrate-binding and kinetic mechanism.
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L.F.Garcia-Alles,
C.Siebold,
T.L.Nyffeler,
K.Flükiger-Brühwiler,
P.Schneider,
H.B.Bürgi,
U.Baumann,
B.Erni.
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ABSTRACT
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Dihydroxyacetone (Dha) kinases are a sequence-conserved family of enzymes, which
utilize two different phosphoryldonors, ATP in animals, plants, and some
bacteria, and a multiphosphoprotein of the phosphoenolpyruvate carbohydrate
phosphotransferase system (PTS) in most bacteria. Here, we compare the
PTS-dependent kinase of Escherichia coli and the ATP-dependent kinase of
Citrobacter freundii. They display 30% sequence identity. The binding constants
of the E. coli kinase for eleven short-chain carbonyl compounds were determined
by acetone precipitation of the enzyme-substrate complexes. They are 3.4 microM
for Dha, 780 microM for Dha-phosphate (DhaP), 50 microM for D,L-glyceraldehyde
(GA), and 90 microM for D,L-glyceraldehyde-3-phosphate. The k(cat) for Dha of
the PTS-dependent kinase is 290 min(-1), and that of the ATP-dependent kinase is
1050 min(-1). The Km for Dha of both kinases is <6 microM. The X-ray
structures of the enzyme-GA and the enzyme-DhaP complex show that substrates as
well as products are bound in hemiaminal linkage to an active-site histidine.
Quantum-mechanical calculations offer no indication for activation of the
reacting hydroxyl group by the formation of the hemiaminal. However, the
formation of the hemiaminal bond allows selection for short-chain carbonyl
compounds and discrimination against structurally similar polyols. The Dha
kinase remains fully active in the presence of 2 M glycerol, and phosphorylates
trace impurities of carbonyl compounds present in glycerol.
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Literature references that cite this PDB file's key reference
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PubMed id
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Reference
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J.M.Clomburg,
and
R.Gonzalez
(2011).
Metabolic engineering of Escherichia coli for the production of 1,2-propanediol from glycerol.
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Biotechnol Bioeng, 108,
867-879.
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R.Shi,
L.McDonald,
Q.Cui,
A.Matte,
M.Cygler,
and
I.Ekiel
(2011).
Structural and mechanistic insight into covalent substrate binding by Escherichia coli dihydroxyacetone kinase.
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Proc Natl Acad Sci U S A, 108,
1302-1307.
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PDB codes:
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I.Sánchez-Moreno,
L.Iturrate,
R.Martín-Hoyos,
M.L.Jimeno,
M.Mena,
A.Bastida,
and
E.García-Junceda
(2009).
From kinase to cyclase: an unusual example of catalytic promiscuity modulated by metal switching.
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Chembiochem, 10,
225-229.
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A.Németh,
and
B.Sevella
(2008).
Development of a new bioprocess for production of 1,3-propanediol I.: Modeling of glycerol bioconversion to 1,3-propanediol with Klebsiella pneumoniae enzymes.
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Appl Biochem Biotechnol, 144,
47-58.
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J.Deutscher,
C.Francke,
and
P.W.Postma
(2006).
How phosphotransferase system-related protein phosphorylation regulates carbohydrate metabolism in bacteria.
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Microbiol Mol Biol Rev, 70,
939.
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S.Christen,
A.Srinivas,
P.Bähler,
A.Zeller,
D.Pridmore,
C.Bieniossek,
U.Baumann,
and
B.Erni
(2006).
Regulation of the Dha operon of Lactococcus lactis: a deviation from the rule followed by the Tetr family of transcription regulators.
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J Biol Chem, 281,
23129-23137.
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PDB codes:
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C.Bächler,
K.Flükiger-Brühwiler,
P.Schneider,
P.Bähler,
and
B.Erni
(2005).
From ATP as substrate to ADP as coenzyme: functional evolution of the nucleotide binding subunit of dihydroxyacetone kinases.
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J Biol Chem, 280,
18321-18325.
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C.Bächler,
P.Schneider,
P.Bähler,
A.Lustig,
and
B.Erni
(2005).
Escherichia coli dihydroxyacetone kinase controls gene expression by binding to transcription factor DhaR.
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EMBO J, 24,
283-293.
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R.D.Barabote,
and
M.H.Saier
(2005).
Comparative genomic analyses of the bacterial phosphotransferase system.
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Microbiol Mol Biol Rev, 69,
608-634.
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The most recent references are shown first.
Citation data come partly from CiteXplore and partly
from an automated harvesting procedure. Note that this is likely to be
only a partial list as not all journals are covered by
either method. However, we are continually building up the citation data
so more and more references will be included with time.
Where a reference describes a PDB structure, the PDB
codes are
shown on the right.
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