The α-amanitin binding site is beneath a “bridge helix” extending across the cleft between the two largest pol II subunits, Rpb1 and Rpb2

TLS Online TPP Program

#Id: 8349

#Unit 2. Cellular Organization

TLS Online TPP Program

#Id: 3362

#Unit 6. System Physiology – Plant

The rate of rotation in intact mitochondria has been estimated at about 6,000 rpm—100 rotations per second

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#Id: 5555

#Unit 7. System Physiology – Animal

Type A intercalated cells  secrete hydrogen ions by a hydrogen-ATPase transporter and by a hydrogen-potassium-ATPase transporter are especially important in eliminating hydrogen ions while reabsorbing bicarbonate in acidosis

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#Id: 4527

#Unit 11. Evolution and Behavior

There are four known forces that are involved in evolution:

1)mutation,

2) genetic drift

3) gene flow or migration

4) selection.

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#Id: 6689

#Unit 3. Fundamental Processes

Trans-splicing is rare in multicellular eukaryotes, it occurs as the primary mechanism to process precursor RNA into mature, translatable mRNAs in some organisms, such as trypanosomes and nematodes.