<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE amino-acid SYSTEM "aminoacids.dtd">
<amino-acid>
   <name>Arginine</name>
   <abbreviation>arg</abbreviation>
   <symbol>r</symbol>
   <molecular-formula>C6H14N4O2</molecular-formula>
   <molecular-weight>174.20</molecular-weight>
   <isoelectric-point>11.15</isoelectric-point>
   <CAS-registry-number>74-79-3</CAS-registry-number>
</amino-acid>
