title: Indole-3-acetic acid and 2-(indol-3-ylmethyl)indol-3-yl acetic acid in the thermophilic archaebacterium Sulfolobus acidocaldarius.
abstract: Indole-3-acetic acid (IAA) and 2-(indol-3-ylmethyl)indol-3-yl acetic acid were identified in lipid extracts of Sulfolobus acidocaldarius; they occurred at concentrations of 0.57 and 0.59 mumol/g (dry weight), respectively. The amount of IAA found in these cells is more than a thousand times greater than that found in a typical extract of a plant in which IAA serves as a plant growth hormone. Neither of these compounds was detected in the other archaebacteria that were analyzed; these included Sulfolobus sulfataricus, Halobacterium salinarium, and several strains of methanogenic bacteria. This is the first report of the natural occurrence of 2-(indol-3-ylmethyl)indol-3-yl acetic acid.
mesh_terms: D001105:Archaea / Q000032:analysis*; D001419:Bacteria / Q000032:analysis*; D055598:Chemical Phenomena; D002621:Chemistry; D002855:Chromatography, Thin Layer; D008401:Gas Chromatography-Mass Spectrometry; D007210:Indoleacetic Acids / Q000032:analysis*
chemical_list: D007210:Indoleacetic Acids; C054224:2-(indol-3-ylmethyl)indol-3-ylacetic acid; C030737:indoleacetic acid