Demjanenko I.V.

Ferritine and biomineralization of biogenic magnetic nanoparticles in microorganisms

In this paper, we verify the hypothesis on obligatory participation of ferritin molecules in the biomineralization process of biogenic magnetic nanoparticles assuming that the genetic mechanism of biogenic magnetic nanoparticles is consistent for prokaryotes and eukaryotes. Using comparative genomic methods, we seek to reveal whether all the magnetic bacteria have ferritin genes in their genome. Well known proteins (ferritin and ferritin-like proteins) are compared with compiling magnetotactice bactria genomes using the blastn “BLAST on-line” under standard program parameters.

Self-Organization of Magnetic Nanoparticles When Giving Magnetic Properties to Yeast Saccharomyces Cerevisiae

We develop and conduct the compararative analysis of four evaluation methods of clusters parameters of magnetic nanoparticles. The magnetically-controllable biosorbent based on the S. cerevisiae culture is used as a model object for analyzing the adequacy of these models. Finally, we obtain the evaluation data on the depth of clusters penetration inside the biomembrane, typical sizes of clusters and dispersion of magnetic cluster sizes. Our analysis shows that all four methods can be used for single magnetic clusters.