4 ms·

Sorry, but that is not correct. Urease is the best-known nickel enzyme (yes, I know, it's bacterial), but there are many more, also in eukaryotes: https://onlin

Sorry, but that is not correct. Urease is the best-known nickel enzyme (yes, I know, it's bacterial), but there are many more, also in eukaryotes: https://onlinelibrary.wiley.com/doi/full/10.1002/pro.3836 https://onlinelibrary.wiley.com/doi/full/10.1002/pro.3836 I don't think anyone has discovered a Cr-containing enzyme but there are hints that it is involved in glucose metabolism.

margalabargala 5y ago
You're being misleading here. Your original comment heavily implied that nickel is essential for humans and stainless steel pans were an important source. Per your source, nickel-containing enzymes are present in "primitive eukaryotes". Not humans. There are no known human enzymes or cofactors that depend on nickel. Chromium, meanwhile, has been known to be an essential trace element in humans for many decades[0][1]. [0] https://pubmed.ncbi.nlm.nih.gov/2602941/ https://pubmed.ncbi.nlm.nih.gov/2602941/ [1] https://pdfs.semanticscholar.org/24a7/c6a0d26945a6063bdcd3f61503c900b64559.pdf https://pdfs.semanticscholar.org/24a7/c6a0d26945a6063bdcd3f6...