What question did this study set out to answer?

Identify the specific extracellular structural domains of the trkA receptor required for high-affinity binding to nerve growth factor (NGF).

April 1, 1995Molecular and Cellular NeuroscienceOpen Access

NGF Binding to the trk Tyrosine Kinase Receptor Requires the Extracellular Immunoglobulin-like Domains

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Identify the specific extracellular structural domains of the trkA receptor required for high-affinity binding to nerve growth factor (NGF).
Constructed a panel of chimeric receptors using cDNA sequences from rat trkA and trkB.
Expressed chimeric constructs in 293 cells via transient transfection, verifying expression using immunoprecipitation and immunoblot analysis.
Evaluated ligand-receptor binding using equilibrium binding assays, Scatchard analysis, and 125I-NGF affinity crosslinking.
Equilibrium binding analyses demonstrated that the two extracellular immunoglobulin-like (IgG) domains of trkA are essential for NGF binding.
Scatchard analysis and 125I-NGF crosslinking confirmed that chimeric receptors lacking trkA IgG domains fail to bind NGF.

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Implication

In vitro chimeric receptor assay demonstrates that extracellular immunoglobulin-like domains of trkA are required for nerve growth factor binding, highlighting key neurotrophin interaction sites.

Cite This Study

Pérez et al. (1995) studied this question.

synapsesocial.com/papers/6a93e8e014b1ce110a006b4f https://doi.org/10.1006/mcne.1995.1010

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Implication

In vitro chimeric receptor assay demonstrates that extracellular immunoglobulin-like domains of trkA are required for nerve growth factor binding, highlighting key neurotrophin interaction sites.

NGF Binding to the trk Tyrosine Kinase Receptor Requires the Extracellular Immunoglobulin-like Domains

Key Points

Discussion

Implication

Cite This Study

NGF Binding to the trk Tyrosine Kinase Receptor Requires the Extracellular Immunoglobulin-like Domains

Key Points

Discussion

Implication

Cite This Study

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