Gorris L G, van der Drift C, Vogels G D
Department of Microbiology, Faculty of Science, University of Nijmegen, The Netherlands.
Biofactors. 1988 Jan;1(1):105-9.
Cofactor extracts of five hydrogenotrophic methanogenic bacteria which contain relatively low amounts of methanopterin were screened for the presence of 7-methylpterin derivatives. Extracts of Methanospirillum hungatei, Methanobrevibacter smithii and Methanoplanus endosymbiosus were found to contain 7-methylpterin and methanopterin. These compounds were absent in extracts of Methanogenium thermophilicum and Methanogenium tatii. An unidentified methanopterin-like compound was detected in extracts of these two species and of Msp. hungatei, while a 7-methylpterin-like compound was found in extracts of Mp. endosymbiosus. A possible physiological role of the latter two compounds is discussed.
对五种含相对少量甲烷蝶呤的嗜氢产甲烷菌的辅因子提取物进行了筛选，以检测7-甲基蝶呤衍生物的存在。发现Hungatei甲烷螺菌、史氏甲烷短杆菌和内共生甲烷平菌的提取物含有7-甲基蝶呤和甲烷蝶呤。嗜热产甲烷菌和塔蒂产甲烷菌的提取物中不存在这些化合物。在这两个物种和Hungatei甲烷螺菌的提取物中检测到一种未鉴定的类甲烷蝶呤化合物，而在内共生甲烷短杆菌的提取物中发现了一种类7-甲基蝶呤化合物。讨论了后两种化合物可能的生理作用。
