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11 Cards in this Set
- Front
- Back
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What triplet sequence is at the 3' end of all mature tRNAs?
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CCA
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How many arms does a tRNA have? What are they (in relation to one another)?
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4 arms and one amino acid receptor.
Amino Acid Receptor D arm T arm Variable arm Anticodon |
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Where is the amino acid attached to in a tRNA?
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The 3' end (CCA)
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What does the secondary and tertiary structure of tRNA resemble?
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secondary - cloverleaf
tertiary - L |
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The _______ on the tRNA complements the codon of the mRNA.
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anticodon
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The _______ suggests that a tRNA can recognize codons with variable third bases.
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Wobble Theory
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What kind of bonds bring stability to tRNA structures?
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hydrogen bonds
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How is CCA added to the 3' end of tRNAs in prokaryotes and eukaryotes?
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prokaryotes - encoded in the tRNA gene
eukaryotes - added enzymatically by a single enzyme without the use of a DNA or RNA template |
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What can the following 3rd bases of the anticodons pair with on the codons?:
U G I |
U can pair with A or G
G can pair with U or C I can pair with U, C, or A |
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Enzyme that covalently links amino acids to the 3' ends of their cognate tRNA(s).
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aminoacyl-tRNA synthase (aaRS)
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Codons of the mRNA are interpreted according to the recognition abilities of _______.
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aaRS
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