The University of Minnesota pathway prediction system

What you can do:
Predicting metabolic logic.
  • The University of Minnesota pathway prediction system recognizes functional groups in organic compounds that are potential targets of microbial catabolic reactions, and predicts transformations of these groups based on biotransformation rules.
  • Rules are based on the University of Minnesota biocatalysis/biodegradation database ( and the scientific literature.
  • As rules were added to the UM-PPS, more of them were triggered at each prediction step.
  • The resulting combinatorial explosion is being addressed in four ways.
  • Biodegradation experts give each rule an aerobic likelihood value of Very Likely, Likely, Neutral, Unlikely or Very Unlikely.
  • Users now can choose whether they view all, or only the more aerobically likely, predicted transformations.
  • Relative reasoning, allowing triggering of some rules to inhibit triggering of others, was implemented.
  • Rules were initially assigned to individual chemical reactions.
  • In selected cases, these have been replaced by super rules, which include two or more contiguous reactions that form a small pathway of their own.
  • Rules are continually modified to improve the prediction accuracy; increasing rule stringency can improve predictions and reduce extraneous choices.
  • metabolic logic
  • metabolism
  • pathway prediction
  • microbial degradation
  • biotransformation
  • biodegradation
  • microbial catabolic reaction
This record last updated: 04-21-2014
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