Reconciliation strategy for various groups of reactions.

During reconciliation, reactions were categorized into groups based
on the types of information that would likely be useful in
reconciling them between the two reconstructions. The major
categories are listed, as well as the number of reactions (# Rxns)
reconciled in each category and the general reconciliation strategy
used. When interpreting the ‘# Rxns’ field, note that
some reactions that do not ‘fit’ in a given category
were nevertheless reconciled in that category, since the
reconciliation of many reactions involved cross-referencing and
reconciling other reactions with similar gene associations. The
‘Pathway’ categories were created for sets of reactions
that did not easily conform to the general methods used for
reconciliation, but had unique or specific methods that were found
to be more appropriate.