Unusual bases and non-Watson–Crick base pairs frequently appear in tRNA molecules. Which base is most likely to pair with hypoxanthine? Draw this base pair.
Q: GCA UGC CGA UAC
A: 1. The tRNA anticodons for the amino acid sequence shown above is - GCA UGC CGA UAC
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Unusual bases and non-Watson–Crick base pairs frequently appear in tRNA molecules. Which base is most likely to pair with hypoxanthine? Draw this base pair.
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- If a tRNA molecule carries a glutamic acid, what are the two possible anticodon sequences that it could contain? Be specific about the 5′ and 3′ ends.A DNA codon has the sequence GAT. What is the resulting tRNA anti-codon in the translationprocess (using Watson-Crick base-pairing)?Three E. coli tRNA molecules with the anticodon sequences CGG, OGG , and UGG are charged with the same amino acid. What is the amino acid ?
- When proteins recognize and bind to a specific sequence in DNA, why do they usually just recognize short sequences of 5-6 bases rather than 10-20 bases?What are the possible codons that a tRNA molecule could interact with if it is carrying each of the following amino acids? (Note that a given tRNA will be specific for one or more of the possible codons) Valine Alanine Cysteine TyrosineIf a tRNA has an anticodon sequence 5'-CAU-3', What would be an amino acid carried by that tRNA?
- Why is it important for all tRNAs to have similar structures?The oxidation of guanine bases in the context of triplet repeats such as CAGCAGCAG can lead to the expansion of the repeat. Explain.The wobble rules for tRNA-mRNA pairing are shown. If we assume that the tRNAs do not containmodified bases, what is the minimum number of tRNAs needed to recognize the codons for the following types of amino acids? A. Leucine B. Methionine C. Serine
- The covalent attachment of an amino acid to a tRNA is an endergonic reaction. In other words, it requires an input of energy for the reaction to proceed. Where does the energy come from to attach amino acids to tRNA molecules?What steps are required to form a charged tRNA?For the anticodon sequences 5' IAA, consider the DNA sequence of the gene encoding the tRNA, what is the sequence of the RNA-like strand of each tRNA gene that corresponds to the tRNA's anticodon? Be sure to indicate polarities.