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TLS Online TPP Program

#Id: 7065

The addition of the 3’-CCA is catalyzed by the enzyme tRNA nucleotidyltransferase, which functions as a nontemplate-directed RNA polymerase.



#Unit 3. Fundamental Processes #Prokaryotic Translation #Part B Pointers
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TLS Online TPP Program

#Id: 9710

#Unit 4. Cell Communication and Cell Signaling

Cdc24 = SOS
Cdc42 = Ras
TLS Online TPP Program

#Id: 9711

#Unit 4. Cell Communication and Cell Signaling

GTP-bound Cdc42, binds to and activates the Ste20 kinase.
TLS Online TPP Program

#Id: 9712

#Unit 4. Cell Communication and Cell Signaling

Ste20 serves as a MAPKKK kinase.
TLS Online TPP Program

#Id: 9713

#Unit 4. Cell Communication and Cell Signaling

Ste20 phosphorylates and activates Ste11, a serine/threonine kinase
TLS Online TPP Program

#Id: 9714

#Unit 4. Cell Communication and Cell Signaling

Ste11 analogous to Raf and other mammalian MEK kinase (MEKK) proteins.
TLS Online TPP Program

#Id: 9715

#Unit 4. Cell Communication and Cell Signaling

Activated Ste11 then phosphorylates Ste7, a dual-specificity MEK.