The protein p27 is intrinsically disordered. It wraps around and inhibits the action of several enzymes called protein kinases that facilitate cell division. 

TLS Online TPP Program

#Id: 6517

#Unit 7. System Physiology – Animal

Phenylethanolamine-N-methyltransferase catalyzes the formation of epinephrine from norepinephrine, is found in appreciable quantities only in the brain and the adrenal medulla

TLS Online TPP Program

#Id: 9461

#Unit 4. Cell Communication and Cell Signaling

Active JAK kinase phosphorylates several tyrosine residues in the receptor’s cytosolic domain and activates a STAT transcription factor that moves directly to the nucleus

TLS Online TPP Program

#Id: 7417

#Unit 5. Developmental Biology

Antennapedia complex, contains the homeotic genes: Labial (lab)

Antennapedia (Antp)

Sex combs reduced (scr), Deformed (dfd) 

Proboscipedia (pb)

TLS Online TPP Program

#Id: 7366

#Unit 5. Developmental Biology

In the Drosophila egg, karyokinesis occurs without cytokinesis to create a syncytium.

TLS Online TPP Program

#Id: 7213

#Unit 5. Developmental Biology

Class I presentation requires internal synthesis of virus protein, as shown by the requirement that the target cell be infected by live virus, and by the inhibition of class I presentation observed when protein synthesis was blocked by the inhibitor emetine