Those who have read my recent questions posted here will have noticed that my questions are often related to hardcore biochemistry, atmospheric processes etc. While I have had some good answers to parts of these I would like to solicit suggestions as to what other Q+A sites and/or forums might be better equipped to handle the highly technical and scientific aspects of my xenobiology queries.
My generally weak areas of knowledge tend to be in biology/biochemstry, geology and astronomy. I find that the answers on this site relating to astronomy/planetology/geology are pretty high quality and sufficient for my worldbuilding needs but I think I need somewhere more specialist for the xenobiology questions.
Can anyone recommend where to take questions about the metabolic capabilities of dimethylsulfonium proprionate, for example? It would need to be a site that is comfortable with fielding questions about hypothetical xenobiology from non-practitioners (e.g. non academics). I realise there are other stack exchanges that might fit the bill but want to take input from those that have used them or other resources.