Article (Scientific journals)
The three-dimensional structure of VIM-31a metallo-blactamase from Enterobacter cloacae in its native and oxidized form
Kupper, Michaël B.; Herzog, Konrad; Bennink, Sandra et al.
2015In FEBS Journal, 282 (12), p. 2352-2360
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Keywords :
active site; antibiotic resistance; crystallographic structures; Enterobacter cloacae; metallo-b-lactamase Abbreviations DLS, dynamic light scattering; MBL, metallo-b-lactamase; PDB, Protein Data Bank; TCEP, Tris(2-carboxyethyl)phosphine; Cell Biology; Molecular Biology; Biochemistry
Abstract :
[en] His and His252Arg substitutions. Located close to the active site, the Tyr224His substitution is also present in VIM-1, VIM-4, VIM-7 and VIM-12. The VIM-31 variant was reported in 2012 from Enterobacter cloacae and kinetically characterized. It exhibits globally lower catalytic efficiencies than VIM-2. In the present study, we report the three-dimensional structures of VIM-31 in its native (reduced) and oxidized forms. The so-called 'flapping-loop' (loop 1) and loop 3 of VIM-31 were not positioned as in VIM-2 but instead were closer to the active site as in VIM-4, resulting in a narrower active site in VIM-31. Also, the presence of His224 in VIM-31 disrupts hydrogen-bonding networks close to the active site. Moreover, a third zinc-binding site, which also exists in VIM-2 structures, could be identified as a structural explanation for the decreased activity of VIM-MBLs at high zinc concentrations.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Kupper, Michaël B.;  Institute of Molecular Biotechnology, RWTH-Aachen University, Germany
Herzog, Konrad;  Institute of Molecular Biotechnology, RWTH-Aachen University, Germany
Bennink, Sandra;  Institute of Molecular Biotechnology, RWTH-Aachen University, Germany
Schlömer, Philipp;  Institute of Molecular Biotechnology, RWTH-Aachen University, Germany
Bogaerts, Pierre;  Laboratory of Bacteriology, CHU Mont-Godinne-Dinant, Universit e Catholique de Louvain, Yvoir, Belgium
Glupczynski, Youri;  Laboratory of Bacteriology, CHU Mont-Godinne-Dinant, Universit e Catholique de Louvain, Yvoir, Belgium
Fischer, Rainer;  Institute of Molecular Biotechnology, RWTH-Aachen University, Germany
Bebrone, Carine  ;  Université de Liège - ULiège > GIGA > GIGA Platforms
Hoffmann, Kurt ;  Institute of Molecular Biotechnology, RWTH-Aachen University, Germany
 These authors have contributed equally to this work.
Language :
English
Title :
The three-dimensional structure of VIM-31a metallo-blactamase from Enterobacter cloacae in its native and oxidized form
Publication date :
13 April 2015
Journal title :
FEBS Journal
ISSN :
1742-464X
eISSN :
1742-4658
Publisher :
Wiley
Volume :
282
Issue :
12
Pages :
2352-2360
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 30 March 2023

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