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Using neutron cryst...
Using neutron crystallography to elucidate the basis of selective inhibition of carbonic anhydrase by saccharin and a derivative
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- Koruza, Katarina (författare)
- Lund University,Lunds universitet,Molekylär cellbiologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Molecular Cell Biology,Department of Biology,Faculty of Science
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- Mahon, Brian P. (författare)
- Princeton University,Florida Museum Natural History
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- Blakeley, Matthew P. (författare)
- Institut Laue Langevin
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- Ostermann, Andreas (författare)
- Technical University of Munich
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- Schrader, Tobias E. (författare)
- Jülich Research Centre
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- McKenna, Robert (författare)
- Florida Museum Natural History
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- Knecht, Wolfgang (författare)
- Lund University,Lunds universitet,Molekylär cellbiologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Molecular Cell Biology,Department of Biology,Faculty of Science
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- Fisher, S. Zoë (författare)
- Lund University,Lunds universitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science,European Spallation Source ESS AB
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(creator_code:org_t)
- Elsevier BV, 2019
- 2019
- Engelska.
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Ingår i: Journal of Structural Biology. - : Elsevier BV. - 1047-8477. ; 205:2, s. 147-154
- Relaterad länk:
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http://dx.doi.org/10...
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https://doi.org/10.1...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Up-regulation of carbonic anhydrase IX (CA IX) expression is an indicator of metastasis and associated with poor cancer patient prognosis. CA IX has emerged as a cancer drug target but development of isoform-specific inhibitors is challenging due to other highly conserved CA isoforms. In this study, a CA IXmimic construct was used (CA II with seven point mutations introduced, to mimic CA IX active site) while maintaining CA II solubility that make it amenable to crystallography. The structures of CA IXmimic unbound and in complex with saccharin (SAC) and a saccharin-glucose conjugate (SGC) were determined using joint X-ray and neutron protein crystallography. Previously, SAC and SGC have been shown to display CA isoform inhibitor selectivity in assays and X-ray crystal structures failed to reveal the basis of this selectivity. Joint X-ray and neutron crystallographic studies have shown active site residues, solvent, and H-bonding re-organization upon SAC and SGC binding. These observations highlighted the importance of residues 67 (Asn in CA II, Gln in CA IX) and 130 (Asp in CA II, Arg in CA IX) in selective CA inhibitor targeting.
Ämnesord
- NATURVETENSKAP -- Biologi -- Strukturbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Structural Biology (hsv//eng)
Nyckelord
- Crystallography
- H/D exchange
- Hydrogen atoms
- Joint X-ray neutron refinement
- Ligand protein interactions
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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