Receptors & Cell Signalling

Signal Transduction
1. controls how cells responds to stimuli
Signalling molecules
1. Create a response by binding to receptor proteins on the cell membrane
2. Types
  1. Endocrine
    1. Travel in the blood to all parts of body
  2. Paracrine
    1. Only target those in the producing cells vacinity
  3. Autocrine
    1. Only target those of the same cell type as the producing cell
Transmembrane hormone receptors
1. Can travel across the cell membrane
2. Are proteins
3. Span the thickness of the cell membrane
Steps of signal transduction via hormones
1. Biosynthesis
2. Storage & Secretion
3. Transport
4. Relay & Amplification
5. Recognition
6. Removal
Receptors
1. Definition
  1. macromolecular proteins that participate in cell signalling via hormones
2. Common features
  1. Are proteins
  2. Have one or more binding sites
  3. Can produce one or more signals
  4. When bound to a hormone they produce a change
  5. Must have properties of recognition and transduction

Resource summary

	Created by Laura Young over 11 years ago