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US08758766B2 Modified Streptococcus pneumoniae pneumolysin (PLY) polypeptides 有权
改良型肺炎链球菌肺炎球菌(PLY)多肽

Modified Streptococcus pneumoniae pneumolysin (PLY) polypeptides
Abstract:
This disclosure relates to modified Streptococcus pneumonia pneumolysm (PLY) proteins which lack hemolytic activity and can be used as immunogens in an immunogenic composition or vaccine against invasive pneumococcol diseases caused by S. pneumonia. The modified pneumolysm proteins comprise ammo acid substitutions at threonine 65, glycine 293 and cysteine 428 Nucleic acids, polypeptides encoded thereby, compositions containing the same, methods for using such nucleic acids, polypeptides and compositions are also provided.
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