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Structural analysis and thermodynamics of the ionotropic glutamate receptor GluA2 modulator BPAM-97

Krintel, Christian LU ; Frydenvang, Karla ; Olsen, Lars ; Kristensen, Maria T ; de Barrios, Oriol ; Naur, Peter ; Francotte, Pierre ; Pirotte, Bernard and Gajhede, Michael (2011) Membrane Proteins: Structure and Function MGMS Spring Meeting p.58-58
Abstract
Ionotropic glutamate receptors are tetrameric ligand gated ion channels that mediate in ux and ef ux of metal ions in response to glutamate. Positive allosteric modulators of the ionotropic glutamate receptor 2 (GluA2) are promising lead compounds for drugs against cognitive disorders. These compounds bind within the dimeric interface formed by the receptor ligand binding domains (LBDs) attenuating deactivation and desensitisation. In this study we determined the structure of the complex formed between a dimeric GluA2 LBD-L483Y-N754S mutant and the potent novel modulator BPAM-97 by X-ray crystallography. We provide a molecular explanation for the 200 fold increased potency of BPAM-97 compared to its parent compound IDRA-21. We also... (More)
Ionotropic glutamate receptors are tetrameric ligand gated ion channels that mediate in ux and ef ux of metal ions in response to glutamate. Positive allosteric modulators of the ionotropic glutamate receptor 2 (GluA2) are promising lead compounds for drugs against cognitive disorders. These compounds bind within the dimeric interface formed by the receptor ligand binding domains (LBDs) attenuating deactivation and desensitisation. In this study we determined the structure of the complex formed between a dimeric GluA2 LBD-L483Y-N754S mutant and the potent novel modulator BPAM-97 by X-ray crystallography. We provide a molecular explanation for the 200 fold increased potency of BPAM-97 compared to its parent compound IDRA-21. We also utilized isothermal titration calorimetry to measure the binding af nity and thermodynamics of the LBD-L483Y-N754S:BPAM-97 complex formation as well as that for the non-dimeric LBD-N754S:BPAM-97. (Less)
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author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to conference
publication status
published
subject
pages
58 - 58
conference name
Membrane Proteins: Structure and Function MGMS Spring Meeting
conference location
Oxford, United Kingdom
conference dates
2011-04-07 - 2011-04-09
language
English
LU publication?
yes
id
631bfee4-d8ea-4028-9c49-213bd3de30e2
date added to LUP
2017-06-21 01:44:03
date last changed
2018-11-21 21:32:55
@misc{631bfee4-d8ea-4028-9c49-213bd3de30e2,
  abstract     = {{Ionotropic glutamate receptors are tetrameric ligand gated ion channels that mediate in ux and ef ux of metal ions in response to glutamate. Positive allosteric modulators of the ionotropic glutamate receptor 2 (GluA2) are promising lead compounds for drugs against cognitive disorders. These compounds bind within the dimeric interface formed by the receptor ligand binding domains (LBDs) attenuating deactivation and desensitisation. In this study we determined the structure of the complex formed between a dimeric GluA2 LBD-L483Y-N754S mutant and the potent novel modulator BPAM-97 by X-ray crystallography. We provide a molecular explanation for the 200 fold increased potency of BPAM-97 compared to its parent compound IDRA-21. We also utilized isothermal titration calorimetry to measure the binding af nity and thermodynamics of the LBD-L483Y-N754S:BPAM-97 complex formation as well as that for the non-dimeric LBD-N754S:BPAM-97.}},
  author       = {{Krintel, Christian and Frydenvang, Karla and Olsen, Lars and Kristensen, Maria T and de Barrios, Oriol and Naur, Peter and Francotte, Pierre and Pirotte, Bernard and Gajhede, Michael}},
  language     = {{eng}},
  pages        = {{58--58}},
  title        = {{Structural analysis and thermodynamics of the ionotropic glutamate receptor GluA2 modulator BPAM-97}},
  year         = {{2011}},
}