IGEM:Harvard/2006/Container Design 4/Python Code/Add Aptamers

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Add aptamers - User Input

#######
# Add aptamers to the ends of the appropriate oligos.
#######

# Constants
apt_seq = 'GGTTGGTGTGGTTGG'
T_linker = 'TTT'
        
print oligo_ra
num_aptamers = int(raw_input('How many aptamers do you want to add? '))
i = 0   
while i < num_aptamers:
        oligo_num = int(raw_input('Which oligo needs an aptamer? '))
        if oligo_num < len(oligo_ra):
                # Add the aptamer to that oligo
                oligo_ra[oligo_num] = oligo_ra[oligo_num] + T_linker + apt_seq
                i = i + 1
        else:
                print 'oligo ' + str(oligo_num) + ' out of range.'

print oligo_ra

Add aptamers using File Input rather than User Input

#####
# Add apts this time using file input instead of user input
#####
                        
# Constants
apt_seq = 'GGTTGGTGTGGTTGG'
T_linker = 'TTT'
                        
fin_barrel = None
                        
try:
        fin_barrel = open("barrel_apts_to_add.txt", "r")
except IOError, e:
        print "Error in file IO: ", e

# Ask the user if they are running a lid or a barrel
shape = int(raw_input("Enter 1 if you are running a barrel, 2 if lid: "))
if (shape == 1):   
        apts_to_add = pickle.load(fin_barrel)
        for apt_specs in apts_to_add:
                oligo_num = apt_specs[0]
                type = apt_specs[1]
                if (type == 1):
                        # apt is pointing in so add 'I' as a flag at the end
                        oligo_ra[oligo_num] = oligo_ra[oligo_num] + T_linker + apt_seq + 'I'
                elif(type == 2):
                        # apt is pointing out so add 'O' as a flag
                        oligo_ra[oligo_num] = oligo_ra[oligo_num] + T_linker + apt_seq + 'O'
                else:
                        # incorrect type
                        print 'Bad input - aptamer needs to be pointing in or out'

Place in a different file - barrel_apts_to_add.txt (Pickle Script)

apt_list = [[oligo_num, type], ... ]
# note that 1 corresponds to in and 2 corresponds to out.

import pickle

fout_barrel = None

try:
        fout_barrel = open("barrel_apts_to_add.txt", "w")
except IOError, e:
        print "Error in file IO: ", e

barrel_apts = [[1, 1], [2, 2], [7, 2], [11, 1], [17, 2], [23, 2], [36, 1], [47, 1]]

pickle.dump(barrel_apts, fout_barrel)

if fout_barrel:
        fout_barrel.close()

Print Aptamer Oligos

Oligo sorting - find an print out those with aptamers


#####   
# oligo sorting
#####

# sort based on whether or not there's an aptamer attached to the end of
# an oligo
        
apt = re.compile('TTTGGTTGGTGTGGTTGG')
oligo_num = 0
for oligo in oligo_ra:   
        m = apt.search(oligo)
        if m:
                print 'Match found: ', oligo + ' : ' + str(oligo_num)
        else: 
                print 'No match' + str(oligo_num)
        oligo_num = oligo_num + 1


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