Lithocholic Acid Side-chain Cleavage to Produce 17-Keto or 22-Aldehyde Steroids by<i>Pseudomonas putida</i>strain ST-491 Grown in the Presence of an Organic Solvent, Diphenyl Ether
作者:Yasumasa SUZUKI、Noriyuki DOUKYU、Rikizo AONO
DOI:10.1271/bbb.62.2182
日期:1998.1
amount of corresponding to 5% of the substrate added. When 20% (v/v) diphenyl ether was added to the medium, 60% of the substrate was converted to 17-keto steroids (androst-4-ene-3,17-dione-like steroid, androsta-1,4-diene-3,17-dione) or a 22-aldehyde steroid (pregna-1,4-dien-3-on-20-al). Amounts of the products were responsible for 45, 10, and 5% of the substrate, respectively. In the presence of the
我们设计了一种筛选能够在有机溶剂存在下在胆汁酸上生长并产生可溶于有机溶剂的衍生物的微生物的方法。在这项研究中分离出的恶臭假单胞菌生物变种ST-491从胆汁酸中产生了脱羧衍生物。生长在0.5%硫代胆酸上的ST-491菌株分解了约30%的底物(作为碳源),并以相应的5%的量暂时积累在雄甾烯-1,4-二烯-3,17-二酮中。添加的底物。当将20%(v / v)的二苯醚添加到介质中时,60%的底物转化为17-酮类固醇(androst-4-ene-3,17-dione-like steroid,androsta-1,4-二烯3,17-二酮)或22醛类固醇(pregna-1,4-dien-3-on-20-al)。大量产品占基材的45%,10%和5%,分别。在表面活性剂Triton X-100代替二苯醚的存在下,40%的底物仅转化为雄甾烯-1,4-二烯-3,17-二酮。