Catabolite repression is exerted through a second messenger called cyclic AMP (cAMP) and the positive regulator protein called the catabolite repressor protein (CRP), a dimer.

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#Unit 4. Cell Communication and Cell Signaling

Don’t eat me

Don’t eat me” signal, the protein CD47. CD47, recognized by the SIRP-α receptor on macrophages.

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#Unit 11. Evolution and Behavior

Gene Structure

The genes that code for many proteins are broken into pieces. These pieces—the exons—are separated by stretches of noncoding DNA—the introns

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#Unit 13. Methods in Biology

Atrial repolarization is not seen on a normal ECG because it is “buried” in the QRS complex.

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#Unit 7. System Physiology – Animal

ADH is the major hormone concerned with regulation of body fluid osmolarity.

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#Unit 3. Fundamental Processes

Hinkle and Chamberlin experiment also showed that the melted DNA has higher affinity for holoenzyme