Staphylococcus aureus carrying PVL gene remain major health problem associated with highly virulent infections. Characterization of such gene is important to know the impact and the functional significance of nucleotide variations. PCR and standard sequencing were performed for twelve Sudanese strains from different sources. Protein structures prediction, modeling and physiochemical analysis we...

Usher syndrome is defined as an autosomal recessive disorder which caused by a mutation in any one of at least 10 genes resulting combination hearing loss and visual impairment. The defect the inner ear, whereas degeneration retinal cells called retinitis pigmentosa (RP), results vision. Based on severity age whensigns symptoms appear, there are three clinical subtypes (characterized I, II, III...