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Unformatted text preview: The mixture was then filtered through nitrocellulose. What was retained on the filter? Only ribosome/tRNA/mRNA complexes where tRNA* (Trp) and mRNA (UGG) were complementary retain on the filter. 3. Which tRNA anti-codons will not be found in normal cells? There is no tRNA for the stop codons at the end of the gene (Open Reading Frame). 4. How many different RNA sequences could code for the peptide ALA ASN THR GLU ALA THR GLU ARG SER (ANTEATERS)? 49 different RNA sequences would code for the peptide ANTEATER because each amino acid has more than one codon sequence coding for its respective amino acid (they range in numbers). 5. Why is it that N-formylmethionine cannot be used to elongate a polypeptide chain? N-formylmethionine is used for initiation of polypetide chain formation. For elongation, aminoacyl-tRNA is used along with elongation factors and GTP....
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- Spring '08