<?xml version="1.0"?> <!DOCTYPE bioml SYSTEM "bioml.dtd"> <bioml> <note> The following is a valid BIOML file describing mature human insulin. It is meant for tutorial purposes. To see a more complicated example describing the same protein, click here. </note> <organism> <species>Homo sapiens</species> <protein comp="6xS[1]"> <name>Insulin</name> <subunit id="1" comp="1xP[1]+1xP[2]"> <peptide id="1" start="1" end="21"> <name>Chain A</name> <aa type="C" at="6" to="11"/> <aa type="C" at="7" to="P[2]A[7]"/> <aa type="C" at="11" to="6"/> <aa type="C" at="20" to="P[2]A[19]"/> GIVEQCCTSI CSLYQLENYC N </peptide> <peptide id="2" start="1" end="30"> <name>Chain B</name> <aa type="C" at="7" to="P[1]A[7]"/> <aa type="C" at="19" to="P[1]A[20]"/> FVNQHLCGSH LVEALYLVCG ERGFFYTPKT </peptide> </subunit> </protein> </organism> </bioml>