Çağla TÜKEL, Mustafa AKÇELİK

Lactococcus lactis subsp.lactis MA83 suşunda aktif bir faj dirençlilik siteminin genetik ve biyokimyasal doğası

Lactococcus lactls subsp. lactis MA83 susunda fajların adsorbslyonu, bu bakteride 32.7 kb büyüklükteki plazmidln varlığında üretilen ekzopolisakkarit materyal tarafından engellendi. Kimyasal analizler sonucunda bu ekzopollsakkarıt materyalin ana bileşenlerinin galaktoz, galaktozamln, ramnoz ve fosfat olduğu belirlendi. Ayrıca, L. lactls subsp. lactls MA83 susunda 0la2, 0p78, 0r4 ve 0p81 fajlarının almaç bölgelerinin protein yapıda olduğu saptandı.

Genetic and biochemical nature of an active phage resistance system in lactococcus lactis subsp.lactis MA83

Adsorption of phages to Lactococcus lactls subsp. lactls MA83 were Inhibited by the exopolysaccharide material that produces In the presence of 32.7 kb plasmid. Major constituents of the exopolysaccharide were determined as galactose, galactosamlne, rhamnose and phosphate by the end of chemical analysis. Moreover receptor sites on L lactls subsp. lactis MA83 strain for phages 0la2, 0p78, 0r4 and 0p81 were found to be protein In nature.

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