diff --git a/MPRT.py b/MPRT.py
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+++ b/MPRT.py
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+#!/usr/bin/python
+#MPRT - Finding a Protein Motif Solution
+#Problem can be found at http://rosalind.info/problems/mprt/
+#Author: Peter Vlasveld
+
+import urllib2
+import re
+
+#declare motif
+motif = "N[^P][ST][^P]"
+
+#read in file
+f0 = open("rosalind_mprt.txt", "r")
+content = f0.read().splitlines()
+f0.close()
+
+#open output file
+f1 = open("output.txt", "w+")
+#loop through each accession ID
+for i in content:
+	#get fasta from url
+	url = "http://www.uniprot.org/uniprot/" + i + ".fasta"
+	response = urllib2.urlopen(url)
+	fasta = response.read().splitlines()
+	
+	#format protein string
+	protStr = ""
+	for j in fasta:
+		if not j.startswith('>'):
+			protStr += j
+	#construct output strings
+	outStr = ""
+	for j in range(0, len(protStr)-4):
+		if re.match(motif,protStr[j:j+4]):
+			outStr += str(j+1) + " "
+	
+	#output
+	if not outStr == "":
+		print i
+		f1.write(i + "\n")
+		print outStr
+		f1.write(outStr + "\n")
+#close output file
+f1.close()