title: Translucent colony form of the gram-negative, levan-producing bacterium, Aerobacter levanicum.
abstract: A spontaneously occurring variation of Aerobacter levanicum, affecting the appearance of colonies on sucrose agar (opaque to translucent colony form), has been observed and studied. This appears to be a mutation that is accompanied by a significant increase in levansucrase (EC 2.4.1.10) activity, in levan production, and by a change in some of the properties of levansucrase.
mesh_terms: D000362:Agar; D002250:Carbon Radioisotopes; D002474:Cell-Free System; D002848:Chromatography, DEAE-Cellulose; D002850:Chromatography, Gel; D002854:Chromatography, Paper; D004754:Enterobacter / Q000166:cytology* / Q000201:enzymology / Q000254:growth & development / Q000378:metabolism; D014644:Genetic Variation; D005947:Glucose / Q000096:biosynthesis; D006602:Hexosyltransferases / Q000378:metabolism; D009604:Nitrosoguanidines; D011135:Polysaccharides, Bacterial / Q000096:biosynthesis; D013395:Sucrose / Q000378:metabolism; D014732:Vibration
chemical_list: D002250:Carbon Radioisotopes; D009604:Nitrosoguanidines; D011135:Polysaccharides, Bacterial; D013395:Sucrose; D000362:Agar; D006602:Hexosyltransferases; D005947:Glucose