A portion of a polypeptide contains the amino acids N-Trp-Lys-Met-Ala-Val-C. Wri

Question

A portion of a polypeptide contains the amino acids N-Trp-Lys-Met-Ala-Val-C. Write the possible mRNA and template strand DNA sequences that would code for this sequence of amino acids. Use A/G and T/C to indicate that either adenine or guanine or thymine or cytosine could occur in a particular position and use N to indicate that any DNA nucleotide could appear.

So,the mRNA sequence should UGG-AAA-AUG-GCU-GUU-UAA-3. How about use N to indicate that any DNA nucleotide could appear? This was asked in the question that I have posted. The answer I got was N on fourth and fifth segment of the mRNA and the DNA sequence. So, for mRNA I got 5-UGG-AAA-AUG-GCU-GCN-GUN-UAA-3, and for the DNA sequence I got 3'- ATA-TTT-TAC-CGN-CAN-AUU-5, is this correct?

. Table A The Genetic Code B Second Position A - UAU c Phe(F) Tyr (Y) UGU Cys (C) UAC UGC n > Leu (L) UAA - stop UAG - stop UGA - stop UGG - Trp (W) . CAUL His (H CGU 1 € 8 € CAC CGC >nc Leu (L) Arg (R) First Position (5' end) Third Position (3' end) AuU7 Pre NA AL AAD Asn (N) Ser (S) nc AUC FIle (1) AUAJ Ald Lys(K) Arg (R) AUG - Met (M) € GG?? GAC ASP (D) > n c Val (V) GGC GGA GGG Gly (G) GUG GAG/Glu (8) IFC2 (3 / 885) ? ) 5 D O 110.20% - + - 5 12:31 AM W - L 63/2018

Explanation / Answer

Given protein sequence: NH2-Trp-Lys-Met-Val-COOH

= NH2-W-K-M-V-COOH

DNA sequence: 5'-TGGAARATGGTN-3'

R = A or G

N = A, T, G or C

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