A mutant yeast strain is found with a mutation affecting some of its tRNA Tyr. The...
A mutant yeast strain is found with a mutation affecting some of its tRNA Tyr. The wild type normally produces a tRNA that recognizes the codon 5’ UAC 3’, and is charged with the amino acid Tyrosine (Tyr) (its notation is tRNATyr). The mutant tRNA is still charged with Tyr, but the anticodon is mutated and now has the sequence 5’- UUA3’. How will some of the proteins produced in these yeast cells be different from the wild type proteins?
Homework Answers
The tRNA that recognizes the codon 5’ UAC 3’ So anticodon is 5' GUA 3'
Mutated anticodon is 5' UUA 3'. So it actual codon is 5' UAA 3' it is a stop codon.
So, in the stop codon 5' UAA 3' this mutated tRNA binds and adds a Tyrosine and translation wont stop and elongation still take place. The mutated strain has long amino acid sequence compare to wild type.
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A mutant yeast strain is found with a mutation affecting
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Question 15:
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C-terminal end of the beta-lactamase enzyme from B.
imaginarium (i.e. - after it is translated and
released from the ribosome, a protease chews off a some amino
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acids removed from the C’-terminus, is 246 amino acids in length
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Please note that Questions 15 to 17 are connected
questions.
Question 15:
The following shows a partial DNA sequence from the wild-type
(normal) allele for the human leukemia-linked apoptotic
gene.
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3' TACGCTAATTAGCCATTT 5' (template strand)
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(a) If the bottom strand serves as the DNA template for
transcription, what is the resulting mRNA sequence?
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marks)
5' AUG CGA UUA AUC GGU AAA 3' ?
Please enter...
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