Specificity of the Autolysin of Streptococcus ( Diplococcus ) pneumoniae
نویسندگان
چکیده
منابع مشابه
Specificity of the autolysin of Streptococcus (Diplococcus) pneumoniae.
A Streptococcus (Diplococcus) pneumoniae autolysin, partially purified from cellular autolysates, was optimally active at pH 7.0 and was stimulated by monovalent cations. Addition of autolysin to walls resulted in the appearance of only N-terminal l-alanine, whereas no glycosidase activity was observed. Walls which had been solubilized by autolysin were separated by gel filtration into a low-mo...
متن کاملCloning of Minor Autolysin of Streptococcus Pneumoniae
Abstract Background and Objective: Increased antibiotic resistant strains and inadequacy of current vaccines against pneumococcal infections necessitate the study of novel protein antigens. It seems that minor autolysin of Streptococcus pneumoniae may have antigenicity. Thus, we aimed at cloning its gene for the first time. Material and Methods: After DNA extraction of Streptococcus pneumoniae ...
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Five of the six known glycosidases in the culture medium of Streptococcus pneumoniae have been purified from 600to 55,000-fold by a systematic procedure of ion exchange and affinity chromatography. Following partial separation of the glycosidases on DEAE-Sephadex, the neuraminidase, the endo-cu-N-acetylgalactosaminidase, the /3-galactosidase, and the P-iV-acetylglucosaminidase were further puri...
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The fine structure of an unencapsulated strain of Diplococcus pneumoniae is described. A striking feature of these bacteria is an intracytoplasmic membrane system which appears to be an extension of septa of dividing bacteria. The possible function of these structures and their relationship to the plasma membrane and other types of intracytoplasmic membranes found in pneumococcus is discussed.
متن کاملautolytic activity and plasma binding study of aap, a novel minor autolysin of streptococcus pneumoniae
pneumococcal autolysins are enzymes involved in cell wall turnover and cellular division physiologically. they have been found to be involved in the pneumococcus pathogenesis. the aim of this study was to identify the autolytic activity of spr1754 as a novel protein of streptococcus pneumoniae . moreover, the binding of the recombinant protein to plasma proteins was also determined. the spr1754...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1974
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.117.2.796-804.1974