In resting cells 

ATP11A and ATP11C, continuously transport phosphatidylserine from the outer to the inner leaflet of the plasma membrane.

TLS Online TPP Program

#Id: 2723

#Unit 12. Applied Biology

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#Id: 1234

#Unit 7. System Physiology – Animal

In bone, 

1,25-dihydroxycholecalciferol acts synergistically with PTH to stimulate osteoclast activity and bone resorption.

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#Id: 1395

#Unit 4. Cell Communication and Cell Signaling

Tropomodulin blocks (−) ends, where filament disassembly normally occurs; thus the major function of tropomodulin is to stabilize filaments .

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#Id: 10021

#Unit 4. Cell Communication and Cell Signaling

Both Fu and Cos2 become extensively phosphorylated, and Fu-Cos2-Ci complex Dissociates

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#Id: 6370

#Unit 2. Cellular Organization

Lac repressor binds as a tetramer to two operators.