Neighboring cells respond to cAMP in two ways:

Initiate a movement toward the cAMP pulse for about a minute

Release cAMP of their own

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#Unit 4. Cell Communication and Cell Signaling

β subunit of I-κB kinase phosphorylates two N-terminal serine residues on I-κBα

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#Unit 11. Evolution and Behavior

Van Valen law -  he found a surprising result: rather straight curves, implying that the probability of extinction is roughly constant.

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#Unit 6. System Physiology – Plant

One of the most extensively characterized of these factors is PIF3, a basic helix-loophelix (bHLH) transcription factor that interacts with both phyA and phyB.

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#Unit 7. System Physiology – Animal

A synapse is a site where information is transmitted from one cell to another. 

Types of synapses:

1. electrical synapse

2. chemical synapse

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#Unit 3. Fundamental Processes

TBP–DNA complex. TBP (purple) is complexed with the DNA TATA sequence (gray) found at the start of many Pol II genes.