泛素化是蛋白质降解的重要过程，以下哪种物质能够起始蛋白质的降解？ A: signal peptide B: ubiquitin C: molecular charpone D: ρ factor
泛素化是蛋白质降解的重要过程，以下哪种物质能够起始蛋白质的降解？ A: signal peptide B: ubiquitin C: molecular charpone D: ρ factor
Which of the APC descriptions is incorrect? A: APC is anaphase-promoting complex. B: APC is a ubiquitin ligase E3. C: The activation of APC eventually leads to the release and activation of the separation enzyme, which in turn leads to the separation of sister chromatids. D: Activated cdc20 binds to APC and inhibits APC activity.
Which of the APC descriptions is incorrect? A: APC is anaphase-promoting complex. B: APC is a ubiquitin ligase E3. C: The activation of APC eventually leads to the release and activation of the separation enzyme, which in turn leads to the separation of sister chromatids. D: Activated cdc20 binds to APC and inhibits APC activity.
Which of the following methods is not used by cells to regulate the amount of a protein in the cell A: Genes can be transcribed into mRNA with different efficiencies. B: Many ribosomes can bind to a single mRNA molecule. C: Proteins can be tagged with ubiquitin, marking them for degradation. D: Nuclear pore complexes can regulate the speed at which newly synthesized proteins are exported from the nucleus into the cytoplasm.
Which of the following methods is not used by cells to regulate the amount of a protein in the cell A: Genes can be transcribed into mRNA with different efficiencies. B: Many ribosomes can bind to a single mRNA molecule. C: Proteins can be tagged with ubiquitin, marking them for degradation. D: Nuclear pore complexes can regulate the speed at which newly synthesized proteins are exported from the nucleus into the cytoplasm.