| evidence for shorter average o-polysaccharide chainlength in the lipopolysaccharide of a bacteriophage felix 01-sensitive variant of salmonella anatum a1. | prolonged culturing in the laboratory has resulted in the formation of a stable derivative of the smooth group e bacterial strain, salmonella anatum a1, that is sensitive to both the r-core-specific bacteriophage felix 01 and o-polysaccharide-specific bacteriophage epsilon 15. the variant strain, designated s. anatum a1-1, exhibits a normal number of irreversible binding sites for epsilon 15 but the relative quality and/or accessibility of those sites appears to be diminished. infectious epsilon ... | 1983 | 6655458 |
| from endonucleases to transcription factors: evolution of the ap2 dna binding domain in plants. | all members of the ap2/erf family of plant transcription regulators contain at least one copy of a dna binding domain called the ap2 domain. the ap2 domain has been considered plant specific. here, we show that homologs are present in the cyanobacterium trichodesmium erythraeum, the ciliate tetrahymena thermophila, and the viruses enterobacteria phage rb49 and bacteriophage felix 01. we demonstrate that the t. erythraeum ap2 domain selectively binds stretches of poly(dg)/poly(dc) showing functio ... | 2004 | 15319480 |
| detection of salmonella by bacteriophage felix 01. | salmonellae are mammalian pathogens that are transmitted mainly through foodstuffs and their handlers. rapid detection requires both specificity and sensitivity in samples containing other bacteria. a solution to this problem is the use of the great specificity conferred by bacteriophages. after implanting reporter genes in a phage genome, the reporter gene products can be measured with great sensitivity when a bacterial host is present. bacteriophage felix 01 infects almost all salmonella strai ... | 2007 | 18363229 |