--- tags: - biokemi - translation - instuderingsuppgifter föreläsare: Ana Luis --- ## Genetic code #### Describe the main features of the genetic code. #### What is degeneracy of the genetic code and what its biological significance? ## Translation and tRNA #### What is translation? #### What is a tRNA and what is its function in protein synthesis? #### What are the general characteristics of a tRNA? #### Why the 3’ CCA terminal region in a tRNA is also know as the acceptor arm? #### What is the wobble effect and which base in the anticodon determines the wobble effect? #### Explain why aminoacyl-tRNA synthetases are the ‘true reads’ of the genetic code? #### How do aminoacyl-tRNA synthetases work? Describe active and editing sites. ## Ribosomes #### What is a ribosome and what are its different components? #### Which components of the ribosome are critical to its structure and function? #### Describe the three binding sites (A, P, and E) and which tRNAs are found in each site. #### What are the differences between bacterial and eukaryotic ribosomes? #### How can the ribosome be used as a structure to development of new antibiotics? ## Protein translation mechanism #### What are the steps of protein translation? #### What are the characteristics of the initiation region in bacteria? #### Explain why the reading frame is establish during the initiation step of protein synthesis? #### How does protein initiation start and what role initiation factors play? #### What is the role of elongation and translocation factors? #### What is the role of release factors in protein synthesis? #### What is a polysome and what is its biological significance? #### What are the differences between bacteria and eukaryotic protein biosynthesis? #### Streptomycin is a bacterial antibiotic that blocks protein biosynthesis. Describe how this antibiotic works and which step of protein biosynthesis is inhibited.