open_reading_frame.ipynb

protein_mass.ipynb

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   "source": [
    "# Calculate the mass of a protein\n",
    "\n",
    "Given a sequence of $\\alpha \\alpha$, return the protein mass. Borin' 'ell."
   ]
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      "97162.90325\n"
     ]
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   "source": [
    "p_mass = {\n",
    "    'A' :  71.03711,\n",
    "    'C' :  103.00919,\n",
    "    'D' :  115.02694,\n",
    "    'E' :  129.04259,\n",
    "    'F' :  147.06841,\n",
    "    'G' :  57.02146,\n",
    "    'H' :  137.05891,\n",
    "    'I' :  113.08406,\n",
    "    'K' :  128.09496,\n",
    "    'L' :  113.08406,\n",
    "    'M' :  131.04049,\n",
    "    'N' :  114.04293,\n",
    "    'P' :  97.05276,\n",
    "    'Q' :  128.05858,\n",
    "    'R' :  156.10111,\n",
    "    'S' :  87.03203,\n",
    "    'T' :  101.04768,\n",
    "    'V' :  99.06841,\n",
    "    'W' :  186.07931,\n",
    "    'Y' :  163.06333\n",
    "}\n",
    "\n",
    "def protein_mass(path):\n",
    "    aa = open(path).read().strip()\n",
    "    return sum([p_mass[i] for i in aa])\n",
    "\n",
    "print protein_mass(\"rosalind_prtm.txt\")"
   ]
  }
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