title: [Formation of squalene and pigment 462 by the culture of Methanobacillus kuzneceovii].
abstract: Using hexane extraction, squalene, its four hydroforms and an unknown orange-yellow coloured compound termed as pigment 462 (since it has a specific absorption maximum in the visible region of the spectrum) were isolated from a thermophylic methane-producing culture of Methanobacillus kuzneceovii. Pigment 462 is rapidly reduced by sodium borohydride and is readily oxidized by air oxygen; its functional group is the keto group. The physico-chemical properties of pigment 462 indicate that the pigment is one of the components of the electron transport chain of methane-producing bacteria and is localized in the membrane.
mesh_terms: D004579:Electron Transport; D019605:Euryarchaeota / Q000378:metabolism*; D006358:Hot Temperature; D008055:Lipids; D010860:Pigments, Biological / Q000096:biosynthesis*; D013053:Spectrophotometry; D013185:Squalene / Q000096:biosynthesis*
chemical_list: D008055:Lipids; D010860:Pigments, Biological; C030631:pigment 462; D013185:Squalene
vernacular_title: Obrazovanie skvalena i pigmenta-462 kul'turoĭ Methanobacillus kuzneceovii.