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7 Cards in this Set

  • Front
  • Back
Secreted molecules mediate three forms of signaling. What are they?
1. Synaptic
2. Paracrine signaling
3. Endocrine signaling
What is autocrine signaling?
Where cells secrete molecules that bind to its own receptors.
Cancer uses what type of signaling?
Why is rapid turnover of signaling molecules important?
For quick adjustments
How does cell-surface receptors act as signal transducers?
Activated cell surface receptors trigger a phosphorylation cascade.
Intracellular signaling proteins take form in two types. What are they?
1. Proteins that become phosphorylated by kinases

2. Proteins that are induced to bind GTP when signal arrives
What is a major signaling mechanism shared?
Phosphorylated is activated

Dephosphorylated in inactivated