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Bovine anaplasmosis is a rickettsial disease of world-wide economic importance caused by Anaplasma marginale. Several major surface proteins with conserved gene sequences have been examined as potential candidates for vaccines and/or diagnostic assays. Major surface protein 1 (MSP1) is composed of polypeptides MSP1a and MSP1b. MSP1a is expressed from the single copy gene msp1α and MSP1b is expressed...
The deletion of a 260-kb segment containing all the coding DNA sequences (CDS) of chromosome 1 of Leishmania major Friedlin strain was performed through homologous recombination during a transfection experiment. This allowed the selection of a mutant clone containing a linear extra chromosome sizing 155 kb (XC155). The structure of XC155 was determined by restriction analysis and DNA cloning and sequencing...
Recent localization of cohesin association regions along the yeast chromatin fibre suggests that compositional variability of DNA in yeast is related to the function and organization of the chromosomal loops. The bases of the loops, where the chromatin fibre is attached to the chromosomal axis, are AT-rich, bind cohesin, and are flanked by genes transcribed convergently. The hotspots of meiotic recombination...
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