Similar to this previous question on databases capturing chemical compound interactions with other biological structures, but extending from that to tissue- or sample-specific data, I would like to know which databases you recommend for human metabolomics data. In other words, while MetaCyc, KEGG and others are useful, I wish to learn which compounds have been detected in, for example, human plasma, urine or saliva, or from a specific tissue.
Martijn, thank you for your suggestion. I know of HMDB and in fact it is the only such database I know. It is especially useful as most if not all values are for serum. +1
With only 420 metabolites in its database, I find PathCase something to keep in mind, but not so useful for my intentions as HMDB. Now, on to the download to collect the protein:metabolite links.