sbml 0.2.2

A parser for SBML
Documentation 
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<?xml version="1.0" encoding="UTF-8"?>
<sbml xmlns="http://www.sbml.org/sbml/level3/version2/core" level="3" version="2">
    <model extentUnits="mole" timeUnits="second">
        <listOfUnitDefinitions>
            <unitDefinition id="per_second">
                <listOfUnits>
                    <unit kind="second" exponent="-1" scale="0" multiplier="1"/>
                </listOfUnits>
            </unitDefinition>
            <unitDefinition id="litre_per_mole_second">
                <listOfUnits>
                    <unit kind="mole" exponent="-1" scale="0" multiplier="1"/>
                    <unit kind="litre" exponent="1" scale="0" multiplier="1"/>
                    <unit kind="second" exponent="-1" scale="0" multiplier="1"/>
                </listOfUnits>
            </unitDefinition>
        </listOfUnitDefinitions>
        <listOfCompartments>
            <compartment id="comp" size="1e-14" spatialDimensions="3" units="litre" constant="true"/>
        </listOfCompartments>
        <listOfSpecies>
            <species compartment="comp" id="E" initialAmount="5e-21" boundaryCondition="false" hasOnlySubstanceUnits="false" substanceUnits="mole" constant="false"/>
            <species compartment="comp" id="S" initialAmount="1e-20" boundaryCondition="false" hasOnlySubstanceUnits="false" substanceUnits="mole" constant="false"/>
            <species compartment="comp" id="P" initialAmount="0" boundaryCondition="false" hasOnlySubstanceUnits="false" substanceUnits="mole" constant="false"/>
            <species compartment="comp" id="ES" initialAmount="0" boundaryCondition="false" hasOnlySubstanceUnits="false" substanceUnits="mole" constant="false"/>
        </listOfSpecies>
        <listOfReactions>
            <reaction id="veq" reversible="true">
                <listOfReactants>
                    <speciesReference species="E" stoichiometry="1" constant="true"/>
                    <speciesReference species="S" stoichiometry="1" constant="true"/>
                </listOfReactants>

                <listOfProducts>
                    <speciesReference species="ES" stoichiometry="1" constant="true"/>
                </listOfProducts>
                <kineticLaw>
                    <math xmlns="http://www.w3.org/1998/Math/MathML">
                        <apply>
                            <times/>
                            <ci>comp</ci>
                            <apply>
                                <minus/>
                                <apply>
                                    <times/>
                                    <ci>kon</ci>
                                    <ci>E</ci>
                                    <ci>S</ci>
                                </apply>
                                <apply>
                                    <times/>
                                    <ci>koff</ci>
                                    <ci>ES</ci>
                                </apply>
                            </apply>
                        </apply>
                    </math>
                    <listOfLocalParameters>
                        <localParameter id="kon" value="1000000" units="litre_per_mole_second"/>
                        <localParameter id="koff" value="0.2" units="per_second"/>
                    </listOfLocalParameters>
                </kineticLaw>
            </reaction>
            <reaction id="vcat" reversible="false">
                <listOfReactants>
                    <speciesReference species="ES" stoichiometry="1" constant="true"/>
                </listOfReactants>
                <listOfProducts>
                    <speciesReference species="E" stoichiometry="1" constant="true"/>
                    <speciesReference species="P" stoichiometry="1" constant="true"/>
                </listOfProducts>
                <kineticLaw>
                    <math xmlns="http://www.w3.org/1998/Math/MathML">
                        <apply>
                            <times/>
                            <ci>comp</ci>
                            <ci>kcat</ci>
                            <ci>ES</ci>
                        </apply>
                    </math>
                    <listOfLocalParameters>
                        <localParameter id="kcat" value="0.1" units="per_second"/>
                    </listOfLocalParameters>
                </kineticLaw>
            </reaction>
        </listOfReactions>
    </model>
</sbml>