genus streptomyces application_number US 76781991 A description now a process for producing uct4 b and terpentecin will be described uct4 b and terpentecin can be obtained by culturing a microorganism belonging to the genus streptomyces and capable of producing uct4 b and terpentecin so as to accumulate uct4 b and terpentecin in the culture and recovering the uct4 b and terpentecin from said culture as the uct4 b and terpentecin producing strain any strain may be used so long as it belongs to the genus streptomyces and can produce uct4 b and terpentecin a typical example thereof is strain s 464 which is newly isolated by the present inventors the mycological properties of the strain s 464 which will be given hereinbelow are determined in accordance with a method for determining the properties of streptomyces strains recommended by the international streptomyces project isp refer to e b shirling and d gottlib int j syst bacteriol 16 313 1966 diaminopimelic acid isomers in the hydrolysate of the whole cells are identified in accordance with the method reported by b becker et al refer to appl microbiol 12 421 1964 an optical microscope is used for morphological studies while a scanning electron microscope is used in particular for observing the morphology of the surface of a spore colors are expressed in accordance with color harmony manual container co of america 4th ed 1958 spore attached to hyphae as a long refractile or loop chain consisting of 10 to 30 or more fragmented spores anabolized carbon source glucose xylose inositol mannitol arabinose rhamnose raffinose lactose sucrose.