Which of the following abdominal muscles is not a part of the anterior abdominal wall? a. quadratus lumborum b. rectus abdominis c. interior oblique d. exterior oblique
Cell Bio Gene Expression and Its control (II) Comparison of the steps leading from gene to protein in eukaryotes and bacteria o Fig 6-20 5' capping, Polly A tail and splicing Comparison of mRNA molecules o Fig 6-21 o We only make one pre=toe in per transcript and prokaryotes make a few o Our capping is different we have none coding sequence and poly A tail o Capping Linkage is 5' to 5' in eukaryotes Residue is methylated o Protect the end from exonuclease- provides a checking system for the cell- what MRNAs are reading for translation Transcription elongation in Eukaryotes Coupled to RNA processing Fig 6-22 Poll II carries RNA processing proteins on its tail that are transferred to the nascent RNA at the appropriate times The CTD contains 52 tandem repeats of a 7-aa seq, with 2 Ser in each repeat The capping proteins first bind to RNA poly tail when Ser5 is phosphorylated Only the fully dephosphorylated form of pol II is competent to begin RNA synthesis at a promoter RNA capping Phosphatase o Removes Guanyl transferase Add GMP in a 5' 5' reverse linkage Methyl transferase N: is usually a purine (A or G) Fig 6-23 Splicing Fig 6-24 One gene can give rise to several different combinations of proteins Evolution: novel proteins can arise Where do you splice