Cited by 554Protein Structure and DynamicsMetal-Catalyzed Oxygenation MechanismsEnzyme Structure and Function

Electrostatic recognition between superoxide and copper, zinc superoxide dismutase

Getzoff, Elizabeth D., Tainer, John A., Weiner, Paul K., Kollman, Peter A., Richardson, Jane S., Richardson, David C.·1983·Nature

Abstract

Electrostatic forces have been implicated in a variety of biologically important molecular interactions including drug orientation by DNA, protein folding and assembly, substrate binding and catalysis and macromolecular complementarity with inhibitors, drugs and hormones. To examine enzyme-substrate interactions in copper, zinc superoxide dismutase (SOD), we developed a method for the visualization and analysis of an enzyme's three-dimensional electrostatic vector field that allows the contributions of specific residues to be identified. We report here that the arrangement of electrostatic charges in SOD promotes productive enzyme-substrate interaction through substrate guidance and charge complementarity: sequence-conserved residues create an extensive electrostatic field that directs the negatively charged superoxide (O-2) substrate to the highly positive catalytic binding site at the bottom of the active-site channel. Dissection of the electrostatic potential gradient indicated the relative contributions of individual charged residues: Lys 134 and Glu 131 seem to have important roles in directing the long-range approach of O-2, while Arg 141 has local orienting effects. The reported methods of analysis may have general application for the elucidation of intermolecular recognition processes.

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Crossref · 10.1038/306287a0

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  • Several studies have been carried out using pulsed radiolysis to generate HO2•/O2•− and to understand the Cu,Zn-SOD-catalysed reaction of superoxide dismutation.

    “Several studies have been carried out using pulsed radiolysis to generate HO2•/O2•− and to understand the Cu,Zn-SOD-catalysed reaction of superoxide dismutation [74,75,76,77], Figure 32.”

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Authors
Getzoff, E. D., Tainer, J. A., Weiner, P. K., Kollman, P. A., Richardson, J. S., & Richardson, D. C.
Affiliations
  • Scripps Research Institute (US)
  • University of California, San Francisco (US)
  • Duke University (US)
Venue
Nature
Published
1983-11
Volume
306
Issue
5940
Pages
287-290
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1969941075
Cited by
554
References
26
Citations by year
2026: 7 · 2025: 12 · 2024: 8 · 2023: 10 · 2022: 4 · 2021: 6 · 2020: 15 · 2019: 10 · 2018: 13 · 2017: 15 · 2016: 8 · 2015: 7 · 2014: 8 · 2013: 8 · 2012: 7
FWCI
8.10
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Physical Sciences › Chemistry › Inorganic Chemistry › Metal-Catalyzed Oxygenation Mechanisms
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
Keywords
copper-zinc superoxide dismutase, superoxide, electrostatic potential, substrate binding, substrate recognition, charge complementarity, charged residues
MeSH terms
Binding Sites, Copper, Electricity, Hydrogen-Ion Concentration, Ions, Models, Molecular, Protein Conformation, Superoxide Dismutase, Zinc

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