From f69d5716a51205fa357594f90cf66088a3518d9e Mon Sep 17 00:00:00 2001
From: jschendel <Jeremy.R.Schendel@gmail.com>
Date: Sat, 31 Aug 2013 19:16:10 -0500
Subject: [PATCH] Complementing a Strand of DNA

Solution to Rosalind Problem 003: Complementing a Strand of DNA
---
 003_REVC.py            | 25 +++++++++++++++++++++++++
 data/rosalind_revc.txt |  1 +
 output/003_REVC.txt    |  1 +
 3 files changed, 27 insertions(+)
 create mode 100644 003_REVC.py
 create mode 100644 data/rosalind_revc.txt
 create mode 100644 output/003_REVC.txt

diff --git a/003_REVC.py b/003_REVC.py
new file mode 100644
index 0000000..a13a165
--- /dev/null
+++ b/003_REVC.py
@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+'''
+A solution to a ROSALIND bioinformatics problem.
+
+Problem Title: Complementing a Strand of DNA
+Rosalind ID: REVC
+Rosalind #: 003
+URL: http://rosalind.info/problems/revc/
+'''
+
+from string import maketrans 
+
+input_file = open('data/rosalind_revc.txt')
+dna = input_file.read()
+input_file.close()
+
+nucleotide = 'ATCG'
+complement = 'TAGC'
+transtab = maketrans(nucleotide, complement)
+
+dna_reverse_complement = dna.translate(transtab)[::-1].lstrip()
+
+output_file = open('output/003_REVC.txt', 'w')
+output_file.write(dna_reverse_complement)
+output_file.close()
diff --git a/data/rosalind_revc.txt b/data/rosalind_revc.txt
new file mode 100644
index 0000000..79402e0
--- /dev/null
+++ b/data/rosalind_revc.txt
@@ -0,0 +1 @@
+GTATTAAGAAGCCTACTGACATAAGATGAGACCTGCGATCCTAAAAGACGGTTAACACGTCACATACCGATCAATCGAACTGTTCAGCGCAACACTATTCCTCCCAAAGGTCGCGGGGACCCCCCAACCATTAGTATGGCTGGTTGATACCACACCTAATTTACTCAGTTTATCCAACCTTTAGAACTCCCCTTTACTTTCTACTGTATTGCCACGAAACAGCACCTATCTACGAACGAGTTCTAAGGGGCCTATATCGGTAGGTGTTTTTTAATACGGTAACGCATCATCGCTACGAAAGATCCCCCAATTAAAGGACAGACAAAACTAGTAGCGTGTTGTCGTTGAAAATATGTCAGCAATATATGGTAACCGAGCTAGGACTCATACTGCGCATTGTTAACTGTCGAATTGGTTAACCACGGCTCACTATCTGCGGGAACGCAGAAGGTCCCCTAAAGTAATCAGTGACGAGCTCAAGGTATAAATTCATGCCAATGTTCTTGGGTGCAAGGCAGGCCCGTCCGGGCCAAACAAGTGCAAGTTTACATAACTGGCCTTAATCCGATAATCACCTGCTTTCGATACGGGGTTAGGAAAAAGAAGCCCGGAGCCTTAGATCCCTAAAATGCGCACTTCTCAGGGGGGTATCGTAGGCGACACTCAGACTGCCGTGTCTTACGCCGCCGCGGGTCGATTAGTCTAAGTGATCGGTACGCAAGGCGATGTCGCACAAAGTGCAAGACGAGGTGAGCAGTAGCTACAGTGCATGCATGGCCGCTCCCGCCAGCTAATCGATTGGCCACCGTAGAATTTGTCCTGTTTCGTCGGTTACACATTTTCACCAGTACGATTAAGACCTCGGTTAACCACTTGTAGATTTTTTGCTTTGGACTAGG
diff --git a/output/003_REVC.txt b/output/003_REVC.txt
new file mode 100644
index 0000000..ccd0bea
--- /dev/null
+++ b/output/003_REVC.txt
@@ -0,0 +1 @@
+CCTAGTCCAAAGCAAAAAATCTACAAGTGGTTAACCGAGGTCTTAATCGTACTGGTGAAAATGTGTAACCGACGAAACAGGACAAATTCTACGGTGGCCAATCGATTAGCTGGCGGGAGCGGCCATGCATGCACTGTAGCTACTGCTCACCTCGTCTTGCACTTTGTGCGACATCGCCTTGCGTACCGATCACTTAGACTAATCGACCCGCGGCGGCGTAAGACACGGCAGTCTGAGTGTCGCCTACGATACCCCCCTGAGAAGTGCGCATTTTAGGGATCTAAGGCTCCGGGCTTCTTTTTCCTAACCCCGTATCGAAAGCAGGTGATTATCGGATTAAGGCCAGTTATGTAAACTTGCACTTGTTTGGCCCGGACGGGCCTGCCTTGCACCCAAGAACATTGGCATGAATTTATACCTTGAGCTCGTCACTGATTACTTTAGGGGACCTTCTGCGTTCCCGCAGATAGTGAGCCGTGGTTAACCAATTCGACAGTTAACAATGCGCAGTATGAGTCCTAGCTCGGTTACCATATATTGCTGACATATTTTCAACGACAACACGCTACTAGTTTTGTCTGTCCTTTAATTGGGGGATCTTTCGTAGCGATGATGCGTTACCGTATTAAAAAACACCTACCGATATAGGCCCCTTAGAACTCGTTCGTAGATAGGTGCTGTTTCGTGGCAATACAGTAGAAAGTAAAGGGGAGTTCTAAAGGTTGGATAAACTGAGTAAATTAGGTGTGGTATCAACCAGCCATACTAATGGTTGGGGGGTCCCCGCGACCTTTGGGAGGAATAGTGTTGCGCTGAACAGTTCGATTGATCGGTATGTGACGTGTTAACCGTCTTTTAGGATCGCAGGTCTCATCTTATGTCAGTAGGCTTCTTAATAC
\ No newline at end of file