ČEŠKOVÁ, Pavla, Zdirad ŽÁK, Barrie JOHNSON, Oldřich JANICZEK and Martin MANDL. Acidofilní chemolithoautotrofní bakterie oxidující síru tvoří iodinin (Acidophilic chemolithoautotrophic sulfur-oxidizing bacteria form iodinin). Chemické listy. Praha: Česká společnost chemická, 2002, vol. 96, No 6, p. 430. ISSN 0009-2770.
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Basic information
Original name Acidofilní chemolithoautotrofní bakterie oxidující síru tvoří iodinin
Name (in English) Acidophilic chemolithoautotrophic sulfur-oxidizing bacteria form iodinin
Authors ČEŠKOVÁ, Pavla (203 Czech Republic), Zdirad ŽÁK (203 Czech Republic), Barrie JOHNSON (826 United Kingdom of Great Britain and Northern Ireland), Oldřich JANICZEK (203 Czech Republic) and Martin MANDL (203 Czech Republic, guarantor).
Edition Chemické listy, Praha, Česká společnost chemická, 2002, 0009-2770.
Other information
Original language Czech
Type of outcome Article in a journal
Field of Study 10600 1.6 Biological sciences
Country of publisher Estonia
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 0.336
RIV identification code RIV/00216224:14310/02:00006225
Organization unit Faculty of Science
Keywords in English Acidithiobacillus; iodinin; sulfur oxidation
Tags Acidithiobacillus, iodinin, sulfur oxidation
Changed by Changed by: doc. Ing. Martin Mandl, CSc., učo 1408. Changed: 10/7/2002 17:00.
Abstract
Tvorba iodininu (1,6-dihydroxyfenazin-5,10-dioxid) byla popsána u mnoha chemoorganoheterotrofních mikroorganismů. Během dlouhodobé oxidace síry bakteriemi Acidithiobacillus ferrooxidans a A. thiooxidans byla pozorována tvorba fialového pigmentu, jehož izolace a charakterizace pomocí rentgenové strukturní analýzy a NMR prokázaly strukturu iodininu. Definitivní průkaz struktury byl komplikován obtížnou krystalizací tohoto metabolitu, proto byly postupně identifikovány různé struktury. Jde o první demonstraci iodininu nejen v acidofilních bakteriích oxidujících síru, ale chemolithoautotrofních mikroorganismech vůbec. Na základě struktury lze usuzovat na hydrofobní interakce mezi povrchem buněk a sirných částic, které by mohly napomáhat adsorpci bakterií na sirném povrchu.
Abstract (in English)
Using X-ray diffraction, the structural analysis of the isolated metabolite resulted in demonstration of iodinin (1,6-dihydroxyphenazine-5,10-dioxide) in Acidithiobacillus ferrooxidans a A. thiooxidans cultures. The amount of this metabolite varied from culture to culture, though the conditions that promote the rate of its production are currently not known. The physiological function of iodinin in A. ferrooxidans is unknown. It is possible that sites on the cell surface are covered with this metabolite, thereby facilitating hydrophobic interactions between cell surfaces and sulfur particles. Such an interaction would be important for the adsorption of A. ferrooxidans onto sulfur surfaces, in addition to other possible adsorption mechanisms. This report describes the first documentation of iodinin formation by sulfur-oxidizing bacteria.
Links
GA525/00/0785, research and development projectName: Acidifikační procesy v sulfidových odpadech
Investor: Czech Science Foundation, Acidification processes in sulfide wastes
MSM 143100005, plan (intention)Name: Strukturně-funkční vztahy biomolekul a jejich role v metabolismu
Investor: Ministry of Education, Youth and Sports of the CR, Biomolecular Structure-function Relationships and their role in the Metabolism
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