Other Shite Flashcards
Which polymerase is responsible for producing mRNA in eukaryotes?
RNA polymerase II
When does mRNA processing take place?
During transcription
What makes up the post-translational pathway?
Free ribosomes –> cytosol –> peroxisomes –> mitochondria –> chloroplast
What makes up the co-translational pathway?
Free ribosomes –> ribosomes on RER –> RER lumen –> Golgi apparatus –> Transport vesicle –> lysosome –> plasma membrane –> secretory vesicle
The arrangement containing the RNA polymerase, exposed DNA template and growing RNA transcript is commonly referred to as the ______________ ________________
Transcription bubble
What are enhancers?
DNA sequences that contain specific binding sites for activator proteins. (are additional regulators)
What does the transcription bubble consist of?
The region containing the RNA polymerase, exposed DNA templates and growing RNA transcript
What gives the transcription process energy?
Pyrophosphate
What features in the termination of prokaryotic mRNA transcript?
Rho factor (factor dependent), stem loop of mRNA (factor independent), a poly uracil sequence
What is a holoenzyme?
When the 5 polypeptide subunits of RNA polymerase are present + sigma factor
What processes have to be completed before eukaryotic mRNA can leave the nucleus?
Transcription, splicing, polyadenyation, capping
What are the two modes of prokaryotic termination?
Factor dependent, factor independent
