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Iranian Biomedical Journal، جلد ۶، شماره ۲، صفحات ۵۵-۶۱
عنوان فارسی The Extractability of Inner-Membrane Proteins from Salmonella typhimurium Intact Cells, Spheroplasts and Inner-Membrane Fragments by Non-Denaturing Detergents
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله Detergents، Cytochromes، Salmonella typhimurium
عنوان انگلیسی The Extractability of Inner-Membrane Proteins from Salmonella typhimurium Intact Cells, Spheroplasts and Inner-Membrane Fragments by Non-Denaturing Detergents
چکیده انگلیسی مقاله The effect of Triton X-100, Na cholate and Tween 80 on the solubilization of integral membrane proteins in intact cells, spheroplasts and inner-membrane fragments of Salmonella typhimurium was studied. The detergents were used in various concentrations (1.6 to 64 mM) and cytochromes b and d were used as marker to monitor the solubilization of membrane-bound proteins. Results showed that no inner-membrane protein solubilization was detected after the treatment of intact cells with detergents. The effect of Na cholate and Tween 80 on spheroplasts and inner-membrane fragments was also negligible in comparison to Triton X-100. Triton X-100 solubilized cytochromes from inner-membrane fragments more efficiently than from spheroplasts. The ratio of total protein solubilization to solubilize cytochromes showed that in spheroplasts this ratio was maximum at 1.6 mM Triton X-100 while it was maximum at 16-32 mM Triton X-100 in inner-membrane fragments. This difference between spheroplasts and inner-membrane fragments may be due to the orientation of the inner- membrane in spheroplasts (right side out) and inner-membrane fragments (in-side out as well as right side out), and to the presence of peripheral proteins attached to cytoplasmic membrane in spheroplasts
کلیدواژه‌های انگلیسی مقاله Detergents, Cytochromes, Salmonella typhimurium
نویسندگان مقاله داریوش مینایی تهرانی | dariush minai tehrani


عزت ا کیهانی | ezzatollah keyhani


زهرا سبحانی دماوندی فر | zahra sobhani damavandifar


نشانی اینترنتی http://ibj.pasteur.ac.ir/browse.php?a_code=A-10-1-296&slc_lang=en&sid=en
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