A coating composition for a metal thin film for coating a vapor-deposited film or sputtered film provided on the surface of a base material, comprising: a coating film forming component containing 50% by weight or more of urethane acrylate that is a reaction product of hydrogenated xylene diisocyanate andor hydrogenated diphenylmethane diisocyanate, polyol, and acrylate having a hydroxyl group. The invention provides the enzyme mentioned above which has characteristics suited for industrial application by screening for soil formate dehydrogenase-producing microorganisms. A shallow trench isolation layer is also formed in the first region and the second region, the shallow trench isolation layer in the first region being thinner than shallow trench isolation layer in the second region. A plurality of magnets 34 are each fixedly secured, by use of swaged portions 36, within a unique one of several slots 38 which are cooperatively formed between a unique one of fingers 18 and a unique portion of body 16 of pole pieces 12, 14.