What question did this study set out to answer?

To elucidate the structural mechanisms underlying NHERF's binding to β2AR and PDGFR receptors.

Structural Determinants of the Na+/H+Exchanger Regulatory Factor Interaction with the β2Adrenergic and Platelet-derived Growth Factor Receptors

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Reveals how NHERF interacts with β2AR and PDGFR, highlighting critical structural mechanisms in their signaling regulation.

To elucidate the structural mechanisms underlying NHERF's binding to β2AR and PDGFR receptors.
Determined crystal structures of the NHERF PDZ1 domain bound to β2AR and PDGFR ligand sequences at 1.9- and 2.2-Å resolution respectively.
Analyzed hydrogen bond networks and hydrophobic interactions stabilizing the complexes.
Investigated conformational changes in PDZ1 residues that accommodate ligand binding.
The NHERF PDZ1 domain forms critical hydrogen bonds with β2AR and EDSFL sequences, enhancing ligand binding affinity.
The structures indicate that side chains at position -1 of the peptides significantly influence binding interactions.
Conformational adjustments of PDZ1 residues Asn22 and Glu43 are necessary for effective ligand accommodation, providing insights into specificity.

Karthikeyan et al. (2002) studied this question.

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