title: Quinones from Archaebacteria, I. New types of menaquinones from the thermophilic archaebacterium Thermoproteus tenax.
abstract: From the archaebacterium Thermoproteus tenax, strain Kra-1 a mixture of 6 quinones of menaquinone and phylloquinone type with isopentyl side chains, MK-6(12H), MK-6-(10H), MK-5(10H), MK-5(8H), MK-4(8H), MK-4(6H) and two analogous quinones, containing in addition a methyl group in the naphthoquinone system, were isolated and characterized.
mesh_terms: D001105:Archaea / Q000032:analysis*; D001419:Bacteria / Q000032:analysis*; D002855:Chromatography, Thin Layer; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D013056:Spectrophotometry, Ultraviolet; D014812:Vitamin K / Q000302:isolation & purification*
chemical_list: D014812:Vitamin K