The effect on the cells that are treated with an agent which caused the removal of cap from messenger RNAs (mRNAs). Concept introduction : After transcription, pre-mRNA is synthesized and further modified before translation in the cytoplasm. This is called the RNA processing and it includes the modification of mRNA ends and RNA splicing . A modified guanine (7-methyl guanine) group is added to the 5′ end of the mRNA chain with the help of the capping enzymes. This is known as the 5′ cap . At the 3′ end of the eukaryotic mRNA chain, adenine groups (poly-A tail) are added by poly (A) polymerase enzyme. This is known as the polyadenylation .

Question

Want to see the full answer?

Answer 1

Question

Chapter 17.3, Problem 3CC

Summary Introduction

To determine: The effect on the cells that are treated with an agent which caused the removal of cap from messenger RNAs (mRNAs).

Concept introduction:

After transcription, pre-mRNA is synthesized and further modified before translation in the cytoplasm. This is called the RNA processing and it includes the modification of mRNA ends and RNA splicing. A modified guanine (7-methyl guanine) group is added to the 5′ end of the mRNA chain with the help of the capping enzymes. This is known as the 5′ cap. At the 3′ end of the eukaryotic mRNA chain, adenine groups (poly-A tail) are added by poly (A) polymerase enzyme. This is known as the polyadenylation.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Molecular Biology Please help with question. thank you You are studying the expression of the lac operon. You have isolated mutants as described below. In the presence of glucose, explain/describe what would happen, for each mutant, to the expression of the lac operon when you add lactose AND what would happen when the bacteria has used up all of the lactose (if the mutant is able to use lactose).5. Mutations in the lac operator that strengthen the binding of the lac repressor 200 fold 6. Mutations in the promoter that prevent binding of RNA polymerase 7. Mutations in CRP/CAP protein that prevent binding of cAMP8. Mutations in sigma factor that prevent binding of sigma to core RNA polymerase

Molecular Biology Please help and there is an attached image. Thank you. A bacteria has a gene whose protein/enzyme product is involved with the synthesis of a lipid necessary for the synthesis of the cell membrane. Expression of this gene requires the binding of a protein (called ACT) to a control sequence (called INC) next to the promoter. A. Is the expression/regulation of this gene an example of induction or repression?Please explain:B. Is this expression/regulation an example of positive or negative control?C. When the lipid is supplied in the media, the expression of the enzyme is turned off.Describe one likely mechanism for how this “turn off” is accomplished.

Molecular Biology Please help. Thank you. Discuss/define the following:(a) poly A polymerase (b) trans-splicing (c) operon