It is negative for clumping factor, coagulase, hyaluronidase, arginine dihydrolase, ornithine decarboxylase, acetoin, arginine arylamidase, alpha- and beta-haemolysins, heat-stable and heat-labile nucleases, indole, hydrogen sulphide and lecithinase.
en.wikipedia.org Serotonin, which is an important neurotransmitter in mammals, can also be attributed to simple indole alkaloids.
en.wikipedia.org The benzopyrrole volatiles indole and skatole actually have a mothball type smell, and therefore probably do not contribute greatly to the characteristic smell of flatus.
en.wikipedia.org However, the enzyme possesses a high degree of substrate specificity, with the indole moiety of tryptamine required for substrate recognition.
en.wikipedia.org The non-related -carbonic anhydrase is required in plants for leaf formation, the synthesis of indole acetic acid (auxin) and alcoholic fermentation.
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