The Cip/Kip family members bind to cyclin-bound CDKs and block the activity of cyclin D-, E-, A-, and B-containing complexes.

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#Id: 7172

#Unit 5. Developmental Biology

Siamois and Twin interact in the organizer with the Smad2 transcription factor activated by vegetal TGF-β family members (Nodal-related proteins, Vg1, activin)

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#Id: 6861

#Unit 3. Fundamental Processes

In Drosophila, an example of position effect variegation in the fly eye. 

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#Id: 3142

#Unit 7. System Physiology – Animal

Inspiratory reserve volume normally amounts to about 3000 mL

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#Id: 1928

#Unit 4. Cell Communication and Cell Signaling

Alternative pathway

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#Id: 6795

#Unit 3. Fundamental Processes

First cleavage reaction in nucleus leaves a 2-nucleotide overhang on the 3’ ends of the dsRNA product. This 3’ overhang is important for recognition of that RNA molecule by the next enzyme in the cytosolic pathway, Dicer.