title: Proticine typing of serologically defined Proteus strains.
abstract: Serologically defined Proteus strains including 120 P. vulgaris, 356 P. mirabilis, 47 P. morganii, 36 P. rettgeri and 66 P. inconstans cultures isolated from a wide variety of sources, were classified by proticine (bacteriocine) typing. Using Cradock-Watson's set of indicator and producer strains, the isolates were tested for proticine production (P type) and for proticine sensitivity (S type). P. vulgaris was typable by the P method in 4.1%, by the S method in 41.6%. The respective percentages for P. mirabilis were 60.1 and 48.9. Most strains of P. morganii, P. rettgeri and P. inconstans were untypable by both methods. A correlation has been demonstrated between P/S types and certain serogroups and serotypes of P. mirabilis. It has been concluded that, in combination with the determination of O and H antigens, the P/S method of proticine typing has a high differentiating value in the epidemiological tracing of P. vulgaris and P. mirabilis.
mesh_terms: D001430:Bacteriocins / Q000096:biosynthesis* / Q000494:pharmacology; D011511:Proteus / Q000145:classification* / Q000187:drug effects / Q000378:metabolism; D011513:Proteus mirabilis / Q000145:classification; D011514:Proteus vulgaris / Q000145:classification; D012703:Serotyping
chemical_list: D001430:Bacteriocins; C019543:proticine