Zinc, a novel structural element found in the family of bacterial adenylate kinases

Autor: Muriel Delepierre, Henry H. Mantsch, Octavian Barzu, Anne-Marie Gilles, Witold K. Surewicz, Philippe Glaser, Elena Presecan
Přispěvatelé: Régulation de l'Expression Génétique (REG), Institut Pasteur [Paris] (IP)-Centre National de la Recherche Scientifique (CNRS), Biochimie des Régulations Cellulaires, Résonance Magnétique Nucléaire, Centre National de la Recherche Scientifique (CNRS)-Institut Pasteur [Paris], Institut Pasteur [Paris]-Centre National de la Recherche Scientifique (CNRS)
Rok vydání: 1992
Předmět:
Zdroj: biochemistry (Moscow)
biochemistry (Moscow), 1992, 31, pp.3038-3043. ⟨10.1021/bi00127a002⟩
ISSN: 1520-4995
0006-2960
DOI: 10.1021/bi00127a002
Popis: The adk gene from Bacillus stearothermophilus was cloned and overexpressed in Escherichia coli under the control of the lac promoter. The primary structure of B. stearothermophilus adenylate kinase exhibited 76% identity with the enzyme from Bacillus subtilis, 60% identity with the enzyme from Lactococcus lactis, and 42% identity with the enzyme from E. coli. The most striking property of the adenylate kinase from B. stearothermophilus is the presence of a structural zinc atom bound to four cysteines in a zinc finger-like fashion. The ability to coordinate zinc is predicted also for a number of other isoforms of bacterial adenylate kinases. Furthermore, the tightly bound metal ion contributes to the high thermodynamic stability of adenylate kinase from B. stearothermophilus.
Databáze: OpenAIRE