title: Folic acid and pteroylpolyglutamate contents of archaebacteria.
abstract: Cell extracts of methanogens and the thermoacidophile Sulfolobus solfataricus contained little or no folic acid (pteroylglutamate) or pteroylpolyglutamate activity (less than 0.1 nmol/g [dry weight]). However, the halophile Halobacterium salinarum contained pteroylmono- or pteroyldiglutamates, and Halobacterium volcanii and Halobacterium halobium contained pteroyltriglutamates at levels equivalent to those in eubacteria (greater than 1 nmol/g [dry weight]).
mesh_terms: D001105:Archaea / Q000032:analysis*; D001419:Bacteria / Q000032:analysis*; D001681:Biological Assay; D019605:Euryarchaeota / Q000032:analysis*; D005492:Folic Acid / Q000031:analogs & derivatives* / Q000032:analysis*; D006217:Halobacterium / Q000032:analysis*; D011624:Pteroylpolyglutamic Acids / Q000032:analysis*
chemical_list: D011624:Pteroylpolyglutamic Acids; D005492:Folic Acid