Why urease is a di-nickel enzyme whereas the CcrA β-lactamase is a di-zinc enzyme
CE Valdez, AN Alexandrova - The Journal of Physical Chemistry …, 2012 - ACS Publications
Ureases and metallo-β-lactamases are amide hydrolases closely related in function and
structure. However, one major difference between them is that the former uses two nickel …
structure. However, one major difference between them is that the former uses two nickel …
Quantum mechanical and molecular dynamics simulations of ureases and Zn β‐lactamases
Herein we briefly review theoretical contributions that have increased our understanding of
the structure and function of metallo‐β‐lactamases and ureases. Both are bimetallic …
the structure and function of metallo‐β‐lactamases and ureases. Both are bimetallic …
New Delhi metallo-β-lactamase I: Substrate binding and catalytic mechanism
M Zheng, D Xu - The Journal of Physical Chemistry B, 2013 - ACS Publications
Metallo-β-lactamases can hydrolyze and deactivate lactam-containing antibiotics, which is
the major mechanism for causing drug resistance in the treatment of bacterial infections …
the major mechanism for causing drug resistance in the treatment of bacterial infections …
Quantum mechanical/molecular mechanical studies of zinc hydrolases
Metallo-enzymes play an indispensible role in many biological functions, and their modes of
substrate binding and catalysis differ considerably from those of metal-free enzymes. A …
substrate binding and catalysis differ considerably from those of metal-free enzymes. A …
Antibiotic Binding to Dizinc β-Lactamase L1 from Stenotrophomonas maltophilia: SCC-DFTB/CHARMM and DFT Studies
A dizinc β-lactamase (L1 from Stenotrophomonas maltophilia) complexed with an antibiotic
compound (moxalactam) has been studied using a hybrid quantum mechanical/molecular …
compound (moxalactam) has been studied using a hybrid quantum mechanical/molecular …
Zn 2+ catalysed hydrolysis of β-lactams: experimental and theoretical studies on the influence of the β-lactam structure
N Díaz, TL Sordo, D Suárez, R Méndez… - New Journal of …, 2004 - pubs.rsc.org
We present both experimental and theoretical results on simple model systems of zinc-β-
lactamases. Kinetic studies show that the rate of degradation of β-lactam antibiotics in the …
lactamases. Kinetic studies show that the rate of degradation of β-lactam antibiotics in the …
Hydrolysis of cephalexin and meropenem by New Delhi metallo-β-lactamase: the substrate protonation mechanism is drug dependent
Emergence of antibiotic resistance due to New Delhi metallo-β-lactamase (NDM-1) bacterial
enzymes is of great concern due to their ability to hydrolyze a wide range of antibiotics …
enzymes is of great concern due to their ability to hydrolyze a wide range of antibiotics …
Role of zinc content on the catalytic efficiency of B1 metallo β-lactamases
Metallo β-lactamases (MβL) are enzymes naturally evolved by bacterial strains under the
evolutionary pressure of β-lactam antibiotic clinical use. They have a broad substrate …
evolutionary pressure of β-lactam antibiotic clinical use. They have a broad substrate …
Hybrid QM/MM and DFT Investigations of the Catalytic Mechanism and Inhibition of the Dinuclear Zinc Metallo-β-Lactamase CcrA from Bacteroides fragilis
H Park, EN Brothers, KM Merz - Journal of the American Chemical …, 2005 - ACS Publications
Based on hybrid QM/MM molecular dynamics simulation and density functional theoretical
(DFT) calculations, we investigate the mechanistic and energetic features of the catalytic …
(DFT) calculations, we investigate the mechanistic and energetic features of the catalytic …
Binding of benzylpenicillin to metallo-β-lactamase: a QM/MM study
Metallo-β-lactamases are bacterial enzymes that may function with either one or two zinc
ions bound in the active site. In this work, the binding of benzylpenicillin to mono-zinc …
ions bound in the active site. In this work, the binding of benzylpenicillin to mono-zinc …