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SM ISO690:2012 ROTARI, Vitalie, PRAK, Krisna, STEPURINA, Tatiana, MORARI, Diana, LAPTEVA, Natalya, MIKAMI, Bunzo, UTSUMI, Shigeru, WILSON, Karl, SHUTOV, Andrei. Phaseolin subjected to limited proteolysis by papain-like proteinase: Primary structure and crystallization. In: Studia Universitatis Moldaviae (Seria Ştiinţe Reale şi ale Naturii), 2008, nr. 2(12), pp. 19-22. ISSN 1814-3237. |
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Studia Universitatis Moldaviae (Seria Ştiinţe Reale şi ale Naturii) | ||||||
Numărul 2(12) / 2008 / ISSN 1814-3237 /ISSNe 1857-498X | ||||||
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Pag. 19-22 | ||||||
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Rezumat | ||||||
Fazeolina, globulina de rezervă 7S din cotiledoanele seminţelor de Phaseolus vulgaris a fost supusă proteolizei
limitate cu proteinaza papainică endogenă PP purificată din cotiledoanele plantulelor de fasole de 6 zile. Digestul a fost
separat în două fracţii: prima cu masă moleculară mare (fazeolina-PP care reţine structura cuaternară), iar a doua cu
masă moleculară mică (peptide eliberate). Structura primară completă a fazeolinei-PP a fost descrisă în baza rezultatelor
combinate a mass-spectrometriei peptidelor eliberate şi a secvenării amino-terminale a fazeolinei-PP. Au fost obţinute
câteva tipuri de cristale ale fazeolinei-PP. Cel mai bun cristal cu rezoluţia difracţiei razelor X de 5,5 Å a fost găsit că
aparţine grupei spaţiale P6322, care diferă de grupa spaţială a cristalelor fazeolinei intacte. Este discutat rolul posibil al
proteolizei limitate a fazeolinei induse de PP la degradarea ei in vivo. |
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Cerif XML Export
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Digestul a fost separat în două fracţii: prima cu masă moleculară mare (fazeolina-PP care reţine structura cuaternară), iar a doua cu masă moleculară mică (peptide eliberate). Structura primară completă a fazeolinei-PP a fost descrisă în baza rezultatelor combinate a mass-spectrometriei peptidelor eliberate şi a secvenării amino-terminale a fazeolinei-PP. Au fost obţinute câteva tipuri de cristale ale fazeolinei-PP. Cel mai bun cristal cu rezoluţia difracţiei razelor X de 5,5 Å a fost găsit că aparţine grupei spaţiale P6322, care diferă de grupa spaţială a cristalelor fazeolinei intacte. 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