Could you elaborate on the specific role that unphosphorylated 4E-BP1 plays in regulating translation processes? How does its lack of phosphorylation impact its ability to interact with other proteins and ultimately affect the rate and efficiency of protein synthesis? Are there any known downstream effects or pathways that are modulated by the unphosphorylated state of 4E-BP1?
7 answers
Valentina
Thu Oct 03 2024
This process, known as cap-dependent translation, allows for the initiation of protein synthesis and is tightly regulated to ensure cellular homeostasis.
Stefano
Thu Oct 03 2024
The 4E-BPs, or eukaryotic translation initiation factors 4E-binding proteins, play a crucial role in regulating protein synthesis by inhibiting the translation of mRNA.
Riccardo
Thu Oct 03 2024
When 4E-BPs are in their hypophosphorylated state, they avidly interact with eIF4E, an essential component of the translation initiation machinery.
Martino
Thu Oct 03 2024
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emma_lewis_pilot
Thu Oct 03 2024
However, upon stimulation by hormones, cytokines, or growth factors, 4E-BPs undergo hyperphosphorylation, which disrupts their binding to eIF4E.