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Size control of in vitro synthesized magnetite crystals by the MamC protein of Magnetococcus marinus strain MC-1

TitleSize control of in vitro synthesized magnetite crystals by the MamC protein of Magnetococcus marinus strain MC-1
Publication TypeJournal Article
Year of Publication2015
AuthorsValverde-Tercedor, C, Montalban-Lopez, M, Perez-Gonzalez, T, Sanchez-Quesada, MS, Prozorov, T, Pineda-Molina, E, Fernandez-Vivas, MA, Rodriguez-Navarro, AB, Trubitsyn, D, Bazylinski, DA, Jimenez-Lopez, C
JournalApplied Microbiology and Biotechnology
Volume99
Pagination5109-5121
Date Published06
Type of ArticleArticle
ISBN Number0175-7598
Accession NumberWOS:000355208900014
Keywords25-degrees-c, adsorption, Biomimetics, biomineralization, complete genome sequence, dissolution, gryphiswaldense, magnetite nanoparticles, magnetosome membrane, Magnetosomes Magnetococcus marinus strain MC-1, magnetotactic bacteria, MamC, mineralization, nanoparticles, proteomic analysis
Abstract

ce of different concentrations of the iron-binding recombinant proteins MamC and MamCnts (MamC without its first transmembrane segment) from the marine, magnetotactic bacterium Magnetococcus marinus strain MC-1 and three commercial proteins [alpha-lactalbumin (alpha-Lac), myoglobin (Myo), and lysozyme (Lyz)]. While no effect was observed on the size of magnetite crystals formed in the presence of the commercial proteins, biomimetic synthesis in the presence of MamC and MamCnts at concentrations of 10-60 mu g/mL resulted in the production of larger and more well-developed magnetite crystals (similar to 30-40 nm) compared to those of the control (similar to 20-30 nm; magnetite crystals grown protein-free). Our results demonstrate that MamC plays an important role in the control of the size of magnetite crystals and could be utilized in biomimetic synthesis of magnetite nanocrystals.

DOI10.1007/s00253-014-6326-y
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Protein Templated Nanocrystals