<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE amino-acid SYSTEM "aminoacids.dtd">
<amino-acid>
   <name>Tyrosine</name>
   <abbreviation>tyr</abbreviation>
   <symbol>y</symbol>
   <molecular-formula>C9H11NO3</molecular-formula>
   <molecular-weight>181.19</molecular-weight>
   <isoelectric-point>5.66</isoelectric-point>
   <CAS-registry-number>60-18-4</CAS-registry-number>
</amino-acid>
