Question

Given tetrapeptide is Val- Ala-Gly-Leu, Use the strand genetic code abbreviations supplemented with the ambiguous code: N=any nucleotide; Pu= a [urine; Py= a pyrimidine; if one of two nucleotides that are not both Py or Pu, use e.g C/G. Separate each codon with a vertical line e.g 5’-NCG|PyPuG|

Answer 1

tetrapeptide is Val- Ala-Gly-Leu

codon are-

5' PuPyN / PuPyN / PuPuN / PyPyN 3'.

Val is coded by - GU(UCAG) so the first is Purine, second is Py and third is any nucleotide so N.

Ala is coded by - GC(UCAG) so the first is Purine, second is Py and third is any nucleotide so N.

Gly is coded by - GG(UCAG) so the first is Purine, second is Pu and third is any nucleotide so N.

Leu is coded by - CU(UCAG) and UU(AG) so the first is Py, second is Py and third is any nucleotide so N.