A mutation causing an addition or a deletion of one base pai
A mutation causing an addition or a deletion of one base pair resulted in the production of a nonfunctional mutant protein. The sequences of the normal and mutant proteins are given below.
Normal: Met - Gly - Glu - Val - Asp
Mutant: Met - Gly - Lys - Ser - Ile - Lys - Trp - Arg - .....
Was this mutation cause by an insertion or a deletion?
Below, fill in the codons in the coding sequence of the mRNA that is translated into the mutant protein. If more than one codon is possible, just enter a single codon.
| NH2 | Met | Gly | Lys | Ser | Ile | ||||||||||
| codons | 5\' | AUG | Answer | Answer | Answer | Answer |
Solution
Normal protein sequence is given as: Met - Gly - Glu - Val - Asp
The mRNA sequence for this sequence will be: AUG GGU GAA GUU GAU
Mutant protein sequence is given as: Met - Gly - Lys - Ser - Ile - Lys - Trp - Arg - .....
he mRNA sequence will be 5\'- AUG GGU AAG UCU AUU AAA UGG .....
the sequence shoe=ws that transition and transversion mutation has taken polace by which purines are exchanged with either purines or pyrimidines and vice versa.
