Pregled bibliografske jedinice broj: 157114
Homogenous Precipitation of Calcium Carbonate Polymorphs by Enzyme Catalyzed Reactions (Plenarno predavanje)
Homogenous Precipitation of Calcium Carbonate Polymorphs by Enzyme Catalyzed Reactions (Plenarno predavanje) // 2nd International Physical Chemistry Days - Book of Abstract / Alkan, Mahir (ur.).
Balikesir: Balikesir University, 2004. str. 11-11 (pozvano predavanje, međunarodna recenzija, sažetak, ostalo)
CROSBI ID: 157114 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Homogenous Precipitation of Calcium Carbonate Polymorphs by Enzyme Catalyzed Reactions (Plenarno predavanje)
(Homogenous Precipitation of Calcium Carbonate Polymorphs by Enzyme Catalyzed Reactions (Plenary lecture))
Autori
Sondi, Ivan
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo
Izvornik
2nd International Physical Chemistry Days - Book of Abstract
/ Alkan, Mahir - Balikesir : Balikesir University, 2004, 11-11
Skup
2nd International Physical Chemistry Days
Mjesto i datum
Balıkesir, Turska; Ayvalık, Turska, 07.10.2004. - 11.10.2004
Vrsta sudjelovanja
Pozvano predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Calcium Carbonate Polymorphs; Urease; Precipitation
Sažetak
Precipitation processes of carbonate particles of different size, shape, and surface properties have been intensively investigated due to their importance in geo- and biosciences, and in numerous industrial applications. This lecture describes and discusses a conceptually new method for the precipitation of calcium carbonate polymorphs effectuated through catalytic decomposition of urea by urease enzymes in solutions of calcium salts. Specifically, this lecture discusses the influence of primary structures of plant (Canavalia ensifomis) and bacterial (Bacillus pasteurii) ureases on the nucleation and growth of carbonate precipitates. Our studies have shown that examined enzymes exert different influences on crystal phase formation and on development of unusual and fascinating morphologies of calcium carbonate polymorphs. These differences may be explained by the dissimilarity in their amino acid sequences and their different interactions with the surface of growing crystals during precipitation processes. Finally, this lecture demonstrates an example how different organisms in nature have ability to produce proteins with the same catalytic function, and how with the slight changes in their primary structure (amino acid sequence), they control the crystal phase and the morphology of calcium carbonate precipitates.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
