Phage receptor material in Lactobacillus casei.
In Lactobacillus casei S-I, D-galactosamine and L-rhamnose comprised a phage receptor for phage J-I. A mixture of D-galactosamine and L-rhamnose effectively inactivated phage J-I, and a J-I-resistant mutant strain, L. casei S-I/J-I, lacked D-galactosamine in its surface component. The phage-inactivating effects of D-galactosamine and L-rhamnose were strongly dependent on the concentration of each substance and on temperature. It is suggested that the receptor for phage J-I involves both D-galactosamine in the cytoplasmic membrane and L-rhamnose in the wall of the host bacterium L. casei S-I, which lacts teichoic acid in its wall.
D001435:Bacteriophages; D001665:Binding Sites; D002473:Cell Wall / Q000032:analysis; D005688:Galactosamine / Q000032:analysis; D007780:Lacticaseibacillus casei / Q000032:analysis; D012210:Rhamnose / Q000032:analysis; D013696:Temperature
D005688:Galactosamine; D012210:Rhamnose