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* Residue conservation analysis
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Enzyme class 2:
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E.C.6.3.4.14
- Biotin carboxylase.
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Reaction:
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ATP + biotin-[carboxyl-carrier-protein] + CO2 = ADP + phosphate + carboxy-biotin-[carboxyl-carrier-protein]
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ATP
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+
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biotin-[carboxyl-carrier-protein]
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+
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CO(2)
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=
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ADP
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+
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phosphate
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+
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carboxy-biotin-[carboxyl-carrier-protein]
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Enzyme class 3:
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E.C.6.4.1.2
- Acetyl-CoA carboxylase.
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Reaction:
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ATP + acetyl-CoA + HCO3- = ADP + phosphate + malonyl-CoA
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ATP
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+
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acetyl-CoA
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+
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HCO(3)(-)
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=
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ADP
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+
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phosphate
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+
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malonyl-CoA
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Cofactor:
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Biotin
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Biotin
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Note, where more than one E.C. class is given (as above), each may
correspond to a different protein domain or, in the case of polyprotein
precursors, to a different mature protein.
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Molecule diagrams generated from .mol files obtained from the
KEGG ftp site
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Gene Ontology (GO) functional annotation
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Biological process
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metabolic process
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1 term
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Biochemical function
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catalytic activity
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4 terms
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DOI no:
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Mol Cell
16:881-891
(2004)
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PubMed id:
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A mechanism for the potent inhibition of eukaryotic acetyl-coenzyme A carboxylase by soraphen A, a macrocyclic polyketide natural product.
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Y.Shen,
S.L.Volrath,
S.C.Weatherly,
T.D.Elich,
L.Tong.
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ABSTRACT
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Acetyl-coenzyme A carboxylases (ACCs) have crucial roles in fatty acid
metabolism. Soraphen A, a macrocyclic polyketide natural product, is a nanomolar
inhibitor against the biotin carboxylase (BC) domain of human, yeast, and other
eukaryotic ACCs. Here we report the crystal structures of the yeast BC domain,
alone and in complex with soraphen A. Soraphen has extensive interactions with
an allosteric site, about 25 A from the active site. The specificity of soraphen
is explained by large structural differences between the eukaryotic and
prokaryotic BC in its binding site, confirmed by our studies on the effects of
single-site mutations in this binding site. Unexpectedly, our structures suggest
that soraphen may bind in the BC dimer interface and inhibit the BC activity by
disrupting the oligomerization of this domain. Observations from native gel
electrophoresis confirm this structural insight. The structural information
provides a foundation for structure-based design of new inhibitors against these
enzymes.
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Selected figure(s)
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Figure 2.
Figure 2. Structure of Biotin Carboxylase in Complex with
Soraphen A(A) Chemical structure of soraphen A. The numbering
scheme of atoms in the macrocycle is shown.(B) Final 2F[o] −
F[c] electron density at 1.8 Å resolution for soraphen A,
contoured at 1σ. Produced with Setor (Evans, 1993).(C)
Schematic drawing of the structure of yeast BC domain in complex
with soraphen A. Residues 535–538 (in the αR-αS loop) are
disordered in this molecule and are shown in gray. Soraphen A is
shown as a stick model in green for carbon atoms, labeled Sor.
The expected position of ATP, as observed in the E. coli BC
subunit (Thoden et al., 2000), is shown in gray.(D) Side view of
the structure of the BC:soraphen complex. The different domains
are colored differently. (C) and (D) were produced with Ribbons
(Carson, 1987).
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Figure 3.
Figure 3. The Binding Mode of Soraphen A(A) Stereographic
drawing showing the binding site for soraphen A. Produced with
Ribbons (Carson, 1987).(B) Schematic drawing of the interactions
between soraphen A and the BC domain.(C) Molecular surface of
the BC domain in the soraphen binding site. Produced with Grasp
(Nicholls et al., 1991).
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The above figures are
reprinted
by permission from Cell Press:
Mol Cell
(2004,
16,
881-891)
copyright 2004.
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Figures were
selected
by an automated process.
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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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C.Tuzmen,
and
B.Erman
(2011).
Identification of ligand binding sites of proteins using the gaussian network model.
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PLoS One, 6,
e16474.
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G.Gago,
L.Diacovich,
A.Arabolaza,
S.C.Tsai,
and
H.Gramajo
(2011).
Fatty acid biosynthesis in actinomycetes.
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FEMS Microbiol Rev, 35,
475-497.
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C.L.Colbert,
C.W.Kim,
Y.A.Moon,
L.Henry,
M.Palnitkar,
W.B.McKean,
K.Fitzgerald,
J.Deisenhofer,
J.D.Horton,
and
H.J.Kwon
(2010).
Crystal structure of Spot 14, a modulator of fatty acid synthesis.
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Proc Natl Acad Sci U S A, 107,
18820-18825.
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PDB code:
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C.S.Huang,
K.Sadre-Bazzaz,
Y.Shen,
B.Deng,
Z.H.Zhou,
and
L.Tong
(2010).
Crystal structure of the alpha(6)beta(6) holoenzyme of propionyl-coenzyme A carboxylase.
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Nature, 466,
1001-1005.
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PDB code:
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K.J.Weissman,
and
R.Müller
(2010).
Myxobacterial secondary metabolites: bioactivities and modes-of-action.
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Nat Prod Rep, 27,
1276-1295.
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C.Y.Chou,
L.P.Yu,
and
L.Tong
(2009).
Crystal structure of biotin carboxylase in complex with substrates and implications for its catalytic mechanism.
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J Biol Chem, 284,
11690-11697.
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PDB codes:
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S.A.McMahon,
G.A.Roberts,
K.A.Johnson,
L.P.Cooper,
H.Liu,
J.H.White,
L.G.Carter,
B.Sanghvi,
M.Oke,
M.D.Walkinshaw,
G.W.Blakely,
J.H.Naismith,
and
D.T.Dryden
(2009).
Extensive DNA mimicry by the ArdA anti-restriction protein and its role in the spread of antibiotic resistance.
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Nucleic Acids Res, 37,
4887-4897.
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PDB code:
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S.M.Firestine,
H.Paritala,
J.E.McDonnell,
J.B.Thoden,
and
H.M.Holden
(2009).
Identification of inhibitors of N5-carboxyaminoimidazole ribonucleotide synthetase by high-throughput screening.
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Bioorg Med Chem, 17,
3317-3323.
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I.Mochalkin,
J.R.Miller,
A.Evdokimov,
S.Lightle,
C.Yan,
C.K.Stover,
and
G.L.Waldrop
(2008).
Structural evidence for substrate-induced synergism and half-sites reactivity in biotin carboxylase.
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Protein Sci, 17,
1706-1718.
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PDB codes:
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Y.S.Cho,
J.I.Lee,
D.Shin,
H.T.Kim,
Y.H.Cheon,
C.I.Seo,
Y.E.Kim,
Y.L.Hyun,
Y.S.Lee,
K.Sugiyama,
S.Y.Park,
S.Ro,
J.M.Cho,
T.G.Lee,
and
Y.S.Heo
(2008).
Crystal structure of the biotin carboxylase domain of human acetyl-CoA carboxylase 2.
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Proteins, 70,
268-272.
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PDB code:
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S.Kondo,
Y.Nakajima,
S.Sugio,
S.Sueda,
M.N.Islam,
and
H.Kondo
(2007).
Structure of the biotin carboxylase domain of pyruvate carboxylase from Bacillus thermodenitrificans.
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Acta Crystallogr D Biol Crystallogr, 63,
885-890.
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PDB code:
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L.Tong,
and
H.J.Harwood
(2006).
Acetyl-coenzyme A carboxylases: versatile targets for drug discovery.
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J Cell Biochem, 99,
1476-1488.
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Y.Shen,
C.Y.Chou,
G.G.Chang,
and
L.Tong
(2006).
Is dimerization required for the catalytic activity of bacterial biotin carboxylase?
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Mol Cell, 22,
807-818.
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PDB codes:
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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
code is
shown on the right.
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