PMID- 18061205
OWN - NLM
STAT- MEDLINE
DCOM- 20080111
LR  - 20170922
IS  - 1089-8638 (Electronic)
IS  - 0022-2836 (Linking)
VI  - 375
IP  - 3
DP  - 2008 Jan 18
TI  - The three-dimensional structure of VIM-2, a Zn-beta-lactamase from Pseudomonas
      aeruginosa in its reduced and oxidised form.
PG  - 604-11
AB  - The crystal structures of the universally widespread metallo-beta-lactamase (MBL)
      Verona integron-encoded MBL (VIM)-2 from Pseudomonas aeruginosa have been solved 
      in their native form as well as in an unexpected oxidised form. This
      carbapenem-hydrolysing enzyme belongs to the so-called B1 subfamily of MBLs and
      shares the folding of alpha beta/beta alpha sandwich, consisting of a core of
      beta-sheet surrounded by alpha-helices. Surprisingly, it showed a high tendency
      to be strongly oxidised at the catalytic cysteine located in the Cys site,
      Cys221, which, in the oxidised structure, becomes a cysteinesulfonic residue. Its
      native structure was obtained only in the presence of
      Tris(2-carboxyethyl)phosphine. This oxidation might be a consequence of a lower
      affinity for the second Zn located in the Cys site that would also explain the
      observed susceptibility of VIM-2 to chelating agents. This modification, if
      present in nature, might play a role in catalytic down-regulation. Comparison
      between native and oxidised VIM-2 and a predicted model of VIM-1 (which shows one
      residue different in the Cys site compared with VIM-2) is performed to explain
      the different activities and antibiotic specificities.
FAU - Garcia-Saez, I
AU  - Garcia-Saez I
AD  - Laboratoire de Cristallographie Macromoleculaire, Institut de Biologie
      Structurale Jean-Pierre Ebel, CNRS-Commissariat a l'Energie Atomique
      (CEA)-Universite Joseph Fourier, 41 rue Jules Horowitz, F-38027 Grenoble Cedex 1,
      France. isabel.garcia@ibs.fr
FAU - Docquier, J-D
AU  - Docquier JD
FAU - Rossolini, G M
AU  - Rossolini GM
FAU - Dideberg, O
AU  - Dideberg O
LA  - eng
GR  - G0500367/Medical Research Council/United Kingdom
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20071113
PL  - England
TA  - J Mol Biol
JT  - Journal of molecular biology
JID - 2985088R
RN  - 0 (Bacterial Proteins)
RN  - 4QD397987E (Histidine)
RN  - 7006-34-0 (Asparagine)
RN  - EC 3.5.2.6 (beta-Lactamases)
RN  - J41CSQ7QDS (Zinc)
RN  - K848JZ4886 (Cysteine)
SB  - IM
MH  - Amino Acid Sequence
MH  - Asparagine/chemistry
MH  - Bacterial Proteins/*chemistry
MH  - Binding Sites
MH  - Conserved Sequence
MH  - Cysteine/chemistry/metabolism
MH  - Escherichia coli/genetics
MH  - Histidine/chemistry
MH  - Hydrophobic and Hydrophilic Interactions
MH  - Models, Chemical
MH  - Models, Molecular
MH  - Molecular Sequence Data
MH  - Molecular Weight
MH  - Oxidation-Reduction
MH  - Protein Binding
MH  - *Protein Conformation
MH  - Protein Folding
MH  - Protein Structure, Secondary
MH  - Pseudomonas aeruginosa/*enzymology
MH  - Sequence Homology, Amino Acid
MH  - Substrate Specificity
MH  - Zinc/*chemistry
MH  - beta-Lactamases/*chemistry
EDAT- 2007/12/07 09:00
MHDA- 2008/01/12 09:00
CRDT- 2007/12/07 09:00
PHST- 2007/08/14 00:00 [received]
PHST- 2007/10/31 00:00 [revised]
PHST- 2007/11/02 00:00 [accepted]
PHST- 2007/12/07 09:00 [pubmed]
PHST- 2008/01/12 09:00 [medline]
PHST- 2007/12/07 09:00 [entrez]
AID - S0022-2836(07)01472-6 [pii]
AID - 10.1016/j.jmb.2007.11.012 [doi]
PST - ppublish
SO  - J Mol Biol. 2008 Jan 18;375(3):604-11. doi: 10.1016/j.jmb.2007.11.012. Epub 2007 
      Nov 13.