Answer:
Explanation:
The following code is written in Python. I created a dictionary with all the possible gene combinations and their corresponding amino acids. The user then enters a string. The string is split into triples and checked against the dictionary. If a value exists the gene and amino acid is printed, otherwise an "Invalid Sequence" error is printed for that triple. The program has been tested and the output can be seen in the attached image below.
def printAminoAcids():
data = {
'TTT': 'Phe', 'TCT': 'Ser', 'TGT': 'Cys', 'TAT': 'Tyr',
'TTC': 'Phe', 'TCC': 'Ser', 'TGC': 'Cys', 'TAC': 'Tyr',
'TTG': 'Leu', 'TCG': 'Ser', 'TGG': 'Trp', 'TAG': '***',
'TTA': 'Leu', 'TCA': 'Ser', 'TGA': '***', 'TAA': '***',
'CTT': 'Leu', 'CCT': 'Pro', 'CGT': 'Arg', 'CAT': 'His',
'CTC': 'Leu', 'CCC': 'Pro', 'CGC': 'Arg', 'CAC': 'His',
'CTG': 'Leu', 'CCG': 'Pro', 'CGG': 'Arg', 'CAG': 'Gln',
'CTA': 'Leu', 'CCA': 'Pro', 'CGA': 'Arg', 'CAA': 'Gln',
'GTT': 'Val', 'GCT': 'Ala', 'GGT': 'Gly', 'GAT': 'Asp',
'GTC': 'Val', 'GCC': 'Ala', 'GGC': 'Gly', 'GAC': 'Asp',
'GTG': 'Val', 'GCG': 'Ala', 'GGG': 'Gly', 'GAG': 'Glu',
'GTA': 'Val', 'GCA': 'Ala', 'GGA': 'Gly', 'GAA': 'Glu',
'ATT': 'Ile', 'ACT': 'Thr', 'AGT': 'Ser', 'AAT': 'Asn',
'ATC': 'Ile', 'ACC': 'Thr', 'AGC': 'Ser', 'AAC': 'Asn',
'ATG': 'Met', 'ACG': 'Thr', 'AGG': 'Arg', 'AAG': 'Lys',
'ATA': 'Ile', 'ACA': 'Thr', 'AGA': 'Arg', 'AAA': 'Lys'
}
string = input("Enter Sequence or just click Enter to quit: ")
sequence_list = []
count = 0
gene = ""
for x in range(len(string)):
if count < 3:
gene += string[x]
count += 1
else:
sequence_list.append(gene)
gene = ""
gene += string[x]
count = 1
sequence_list.append(gene)
for gene in sequence_list:
if gene.upper() in data:
print(str(gene.upper()) + ": " + str(data[gene.upper()]))
else:
print(str(gene.upper()) + ": invalid sequence")
printAminoAcids()
