%% Find out how a quantity is used in a model
% Load a sample project.

sbioloadproject gprotein.sbproj

%
% Check and see how the rate of G protein inactivation parameter kGd is used in the model.

kGd = sbioselect(m1,'Name','kGd');
[components,usages] = findUsages(kGd);

%
% components is a vector of components that use the parameter kGd. Display these components.

for i = 1:length(components)
    components(i)
end

%
% Based on the information from the usages table, the parameter is being used as a reaction rate parameter.

usages

% Copyright 2012 The MathWorks, Inc.