#NAME:

#$------------------------------------------------------------------------------------------$

#PYTHON LAB $6$

#$------------------------------------------------------------------------------------------$

#PART $1-$

#FUNCTION NAME: rna$2$protein

#PARAMETERS: $1($An RNA sequence$)$

#PURPOSE: The function should:

# $(1)$ Divide the RNA sequence into a list of $3-$base codons.

#HINT: You could use CodonList inside this function from previous lecture.

# $(2)$ Create a new protein string.

# $(3)$ Use the "standard$\_$code" dictionary to find the amino acid for each codon in the list.

# $(4)$ Return the new protein string.

#RETURN VALUES: A protein sequence. $($A string$)$

#Hint: When building the protein you are trying to return, add the dictionary values below $($the letters

# of the amino acids to an empty string $($e$.$g$.,$ prot$="").$

standard$\_$code $=\{$

"UUU": $"$F$",$ "UUC": $"$F$",$ "UUA": $"$L$",$ "UUG": $"$L$",$ "UCU": $"$S$",$

"UCC": $"$S$",$ "UCA": $"$S$",$ "UCG": $"$S$",$ "UAU": $"$Y$",$ "UAC": $"$Y$",$

"UAA": $"*",$ "UAG": $"*",$ "UGA": $"*",$ "UGU": $"$C$",$ "UGC": $"$C$",$

"UGG": $"$W$",$ "CUU": $"$L$",$ "CUC": $"$L$",$ "CUA": $"$L$",$ "CUG": $"$L$",$

"CCU": $"$P$","$CCC$"$: $"$P$",$ "CCA": $"$P$","$CCG$"$: $"$P$",$ "CAU": $"$H$",$

"CAC": $"$H$",$ "CAA": $"$Q$",$ "CAG": $"$Q$",$ "CGU": $"$R$","$CGC$"$: $"$R$",$

"CGA": $"$R$","$CGG$"$: $"$R$",$ "AUU": "I", "AUC": "I", "AUA": "I",

"AUG": $"$M$",$ "ACU": $"$T$",$ "ACC": $"$T$",$ "ACA": $"$T$",$ "ACG": $"$T$",$

"AAU": $"$N$",$ "AAC": $"$N$",$ "AAA": $"$K$",$ "AAG": $"$K$",$ "AGU": $"$S$",$

"AGC": $"$S$",$ "AGA": $"$R$",$ "AGG": $"$R$",$ "GUU": $"$V$",$ "GUC": $"$V$",$

"GUA": $"$V$",$ "GUG": $"$V$",$ "GCU": $"$A$","$GCC$"$: $"$A$",$ "GCA": $"$A$",$

$"$GCG$"$: $"$A$",$ "GAU": $"$D$",$ "GAC": $"$D$",$ "GAA": $"$E$",$ "GAG": $"$E$",$

"GGU": $"$G$","$GGC$"$: $"$G$",$ "GGA": $"$G$","$GGG$"$: $"$G$"\}$

def rna$2$protein$()$:

return

#EXAMPLE:

#protein$=$rna$2$protein$("$GCGAGGGUCUGA$")$

#print $($protein$)$

#This should print:

#ARV$*$

#$------------------------------------------------------------------------------------------$

#PART $2-$

#FUNCTION NAME: dna$2$protein

#PARAMETERS: $1($A DNA sequence$)$

#PURPOSE: The function should:

# $(1)$ Clean the DNA sequence and convert it to RNA. Just change T$\text{'}$s to U$\text{'}$s $($don$\text{'}$t reverse compliment$)$

# $(2)$ Divide the RNA sequence into a list of $3-$base codons.

# $(3)$ Create a new protein string.

# $(4)$ Use the "standard$\_$code" dictionary to find the amino acid for each codon.

# $[$NOTE: Stop translating after "Stop" codons.$]$

# $(5)$ Return the new protein string.

#RETURN VALUES: A protein sequence. $($A string$)$

#$==$ FUNCTION $2==$

def dna$2$protein$()$:

return

#EXAMPLE:

#protein$=$nda$2$protein$("$

ATGCaaaGAGacTGAgCC

$\backslash$t

$")$

#print $($protein$)$

#The function would return:

# MQRD$*$

#############Extra Practice##############

# Modify your dna$2$protein function

# Use a try$/$except loop with your dictionary so that if the key is NOT in the dictionary,

# It adds a $"?"$ instead to the protein sequence.

#EXAMPLE:

#protein$2=$dna$2$protein$("$

ATGC$-$aaGAGacTGAgCC

$\backslash$t

$")$

#print $($protein$2)$

###

#Should print:

# M$?$RD$*$

please dont use chatgpt