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Related Experiment Videos

Sonic hedgehog: making the gradient

D A Bumcrot1, A P McMahon

  • 1Department of Molecular and Cellular Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA.

Chemistry & Biology
|January 1, 1996
PubMed
Summary
This summary is machine-generated.

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Sonic hedgehog amino-terminal peptide acts at a distance during development. Its concentration affects signaling, and structural data suggest zinc-dependent proteolysis is involved.

Area of Science:

  • Developmental Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Sonic hedgehog (Shh) is a crucial signaling molecule in embryonic development.
  • Shh is typically considered a cell-tethered protein, but its signaling can occur over distances.
  • Understanding Shh's mechanism of action is vital for developmental research.

Purpose of the Study:

  • To investigate the signaling mechanism of the Sonic hedgehog amino-terminal peptide.
  • To explore the role of concentration-dependent effects in Shh signaling.
  • To examine the potential involvement of zinc-dependent proteolysis in Shh function.

Main Methods:

  • Analysis of structural data related to Sonic hedgehog.
  • Investigation of concentration-dependent signaling effects.

Related Experiment Videos

  • Exploration of biochemical pathways involving zinc-dependent proteolysis.

    • Main Results:

    • The amino-terminal peptide of Sonic hedgehog functions as a signaling molecule.
    • Shh signaling exhibits concentration-dependent effects crucial for development.
    • Emerging structural data indicate a potential role for zinc-dependent proteolysis.

    Conclusions:

    • Sonic hedgehog's amino-terminal peptide mediates long-range developmental signals.
    • Signal outcome is modulated by peptide concentration.
    • Zinc-dependent proteolysis is a plausible mechanism underlying Shh's function.