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Updated: Jul 17, 2026
14:44
Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
Published on: December 16, 2013
Effect of carboxylate-binding mode on metal binding/selectivity and function in proteins
1Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan.
Accounts of Chemical Research
|January 18, 2007
Summary
Metalloprotein function is modulated by how carboxylates bind metal ions, switching between monodentate and bidentate modes. This binding mode influences metal ion affinity and selectivity, offering a way to fine-tune protein properties.
Area of Science:
- Biochemistry
- Structural Biology
- Bioinorganic Chemistry
Background:
- Metalloproteins utilize metal ions for diverse biological functions.
- The interaction between metal ions and protein ligands, particularly carboxylates, is crucial for metalloprotein activity.
- Understanding carboxylate-binding modes (monodentate vs. bidentate) is key to deciphering metalloprotein mechanisms.
Purpose of the Study:
- To identify factors governing carboxylate binding modes in metalloproteins.
- To elucidate how carboxylate binding influences metal ion affinity, selectivity, and overall protein function.
- To explore the potential of manipulating binding modes for protein engineering.
Main Methods:
- Comparative analysis of carboxylate coordination in selected Ca2+-binding proteins and enzymes.
- Structural examination of metalloproteins including ribonuclease H1, phosphoserine phosphatase, and ribonucleotide reductase.
- Correlation of binding modes with metal ion binding characteristics and functional assays.
Main Results:
- The carboxylate binding mode (monodentate or bidentate) significantly impacts metal ion binding affinity and selectivity.
- Structural factors, alongside the binding mode, dictate the fine-tuning of metal-binding sites.
- A switch between monodentate and bidentate carboxylate coordination can alter metalloprotein properties.
Conclusions:
- The carboxylate binding mode is a critical determinant of metalloprotein function.
- Modulating the carboxylate binding mode offers a strategy to engineer metalloprotein affinity and selectivity.
- This understanding can guide the design of novel metalloproteins with tailored functions.
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