(Web)app to search metabolic/signalling pathways I'm looking for an application where you can find pathways by selecting a chemical occurring in it. So, for example, selecting 6-phosphogluconolactone brings up the pentose phosphate pathway or any other where it occurs as an intermediate or product. Same could be possible for endocrine or any other signalling. The target organism is human. Is there anything like this in existence?

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I had to truncate to gluconolactone to make the search work in both cases.