Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Structural Analysis of Substrate, Reaction Intermediate, and Product Binding in Haemophilus influenzae Biotin Carboxylase

Journal Article · · Biochemistry
 [1];  [1];  [2];  [1];  [1]
  1. Louisiana State Univ., Baton Rouge, LA (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)

Acetyl-CoA carboxylase catalyzes the first and regulated step in fatty acid synthesis. In most Gram-negative and Gram-positive bacteria, the enzyme is composed of three proteins: biotin carboxylase, a biotin carboxyl carrier protein (BCCP), and carboxyltransferase. The reaction mechanism involves two half-reactions with biotin carboxylase catalyzing the ATP-dependent carboxylation of biotin-BCCP in the first reaction. In the second reaction, carboxyltransferase catalyzes the transfer of the carboxyl group from biotin-BCCP to acetyl-CoA to form malonyl-CoA. In this report, high-resolution crystal structures of biotin carboxylase from Haemophilus influenzae were determined with bicarbonate, the ATP analogue AMPPCP; the carboxyphosphate intermediate analogues, phosphonoacetamide and phosphonoformate; the products ADP and phosphate; and the carboxybiotin analogue N1'-methoxycarbonyl biotin methyl ester. The structures have a common theme in that bicarbonate, phosphate, and the methyl ester of the carboxyl group of N1'-methoxycarbonyl biotin methyl ester all bound in the same pocket in the active site of biotin carboxylase and as such utilize the same set of amino acids for binding. Here, this finding suggests a catalytic mechanism for biotin carboxylase in which the binding pocket that binds tetrahedral phosphate also accommodates and stabilizes a tetrahedral dianionic transition state resulting from direct transfer of CO2 from the carboxyphosphate intermediate to biotin.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE; National Inst. of Health
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1186930
Journal Information:
Biochemistry, Journal Name: Biochemistry Journal Issue: 24 Vol. 54; ISSN 0006-2960
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
ENGLISH

References (37)

The enzymes of biotin dependent CO 2 metabolism: What structures reveal about their reaction mechanisms journal October 2012
A diverse superfamily of enzymes with ATP-dependent carboxylate-amine/thiol ligase activity journal December 1997
Carbamoyl Phosphate Synthetase fromEscherichia coliDoes Not Catalyze the Dehydration of Bicarbonate to Carbon Dioxide journal November 1998
ATPase activity of biotin carboxylase provides evidence for initial activation of HCO3− by ATP in the carboxylation of biotin journal December 1986
On the Possible Involvement of a Carbonyl Phosphate Intermediate in the Adenosine Triphosphate-dependent Carboxylation of Biotin journal February 1972
Multi-subunit acetyl-CoA carboxylases journal September 2002
The ATP-grasp enzymes journal December 2011
Discovery and optimization of antibacterial AccC inhibitors journal December 2009
Mechanistic studies on the human matrix metalloproteinase stromelysin journal November 1992
Three-Dimensional Structure of the Biotin Carboxylase Subunit of Acetyl-CoA Carboxylase journal August 1994
Catalytic mechanism of biotin carboxylase: steady-state kinetic investigations journal June 1988
Carbon-13 and deuterium isotope effects on the catalytic reactions of biotin carboxylase journal June 1988
On the intermediacy of carboxyphosphate in biotin-dependent carboxylations journal October 1988
Interaction between the Biotin Carboxyl Carrier Domain and the Biotin Carboxylase Domain in Pyruvate Carboxylase from Rhizobium etli journal November 2011
Novel Insights into the Biotin Carboxylase Domain Reactions of Pyruvate Carboxylase from Rhizobium etli journal November 2011
Inverse Solvent Isotope Effects Demonstrate Slow Aquo Release from Hypoxia Inducible Factor-Prolyl Hydroxylase (PHD2) journal August 2012
Hydrolysis of N -Succinyl- l , l -diaminopimelic Acid by the Haemophilus influenzae dapE -Encoded Desuccinylase:  Metal Activation, Solvent Isotope Effects, and Kinetic Mechanism journal July 1998
Mutations at Four Active Site Residues of Biotin Carboxylase Abolish Substrate-Induced Synergism by Biotin journal March 1999
Do Cysteine 230 and Lysine 238 of Biotin Carboxylase Play a Role in the Activation of Biotin? journal April 2000
Discovery of Antibacterial Biotin Carboxylase Inhibitors by Virtual Screening and Fragment-Based Approaches journal May 2009
Frontiers, Opportunities, and Challenges in Biochemical and Chemical Catalysis of CO 2 Fixation journal June 2013
Mechanisms of decarboxylation of carboxybiotin journal August 1988
Proton exchange in biotin: a reinvestigation, with implications for the mechanism of carbon dioxide transfer journal August 1987
Enzymic carboxyl transfer from N-carboxybiotin. A molecular orbital evaluation of conformational effects in promoting reactivity journal May 1986
Alcohol-bicarbonate-water system. Structure-reactivity studies on the equilibriums for formation of alkyl monocarbonates and on the rates of their decomposition in aqueous alkali journal September 1975
Intramolecular nucleophilic attack on carboxylate by ureide anion. General acid–base catalysis of the alkaline cyclisation of 2,2,3,5-tetramethylhydantoic acid journal January 1984
A class of selective antibacterials derived from a protein kinase inhibitor pharmacophore journal January 2009
Molecular structure and intermolecular interactions of N1'-methoxycarbonylbiotin methyl ester: a model for carboxybiotin. journal March 1980
Movement of the Biotin Carboxylase B-domain as a Result of ATP Binding journal May 2000
Kinetic Characterization of Mutations Found in Propionic Acidemia and Methylcrotonylglycinuria journal April 2004
Crystal Structure of Biotin Carboxylase in Complex with Substrates and Implications for Its Catalytic Mechanism journal April 2009
A neutron-diffraction study of the low-cycle fatigue behaviour of an austenitic stainless steel 316 journal August 2010
New tools for structure refinement in PHENIX journal August 2010
Structural evidence for substrate-induced synergism and half-sites reactivity in biotin carboxylase journal October 2008
Acetyl-Coenzyme-A Carboxylase from Rat Liver. Subunit Structure and Proteolytic Modification journal September 1975
Vancomycin Resistance: Structure of D-Alanine:D-Alanine Ligase at 2.3 Å Resolution journal October 1994
The Mechanism of Biotin-Dependent Enzymes journal June 1989

Cited By (1)

Elucidating Self-Assembling Peptide Aggregation via Morphoscanner: A New Tool for Protein-Peptide Structural Characterization journal June 2018

Similar Records

On the intermediacy of carboxyphosphate in biotin-dependent carboxylations
Journal Article · Tue Oct 18 00:00:00 EDT 1988 · Biochemistry; (USA) · OSTI ID:6941059

Structural evidence for substrate-induced synergism and half-sites reactivity in biotin carboxylase
Journal Article · Fri Oct 24 00:00:00 EDT 2008 · Protein Sci. · OSTI ID:1006907

Crystal Structure of Biotin Carboxylase in Complex with Substrates and Implications for Its Catalytic Mechanism
Journal Article · Wed Dec 31 23:00:00 EST 2008 · Journal of Biological Chemistry · OSTI ID:980100