Genetic dissection of the mamAB and mms6 operons reveals a gene set essential for 1 magnetosome biogenesis in Magnetospirillum gryphiswaldense 2 3 4 5 Anna Lohße, Sarah Borg, Oliver Raschdorf, Isabel Kolinko, Éva 6 Tompa, Mihály Pósfai, Damien Faivre, Jens Baumgartner, and Dirk 7 Schüler* 8 9 10 11 12 13 14 1 Ludwig-Maximilians-Universität München, Dept. Biologie I, Mikrobiologie, 15 LMU Biozen...

Pure culture of magnetotactic bacteria with high magnetosome yield has been achieved for only a few strains. The major obstacles involve the nutritional requirements and culture conditions of the cells. To increase cell density and magnetosome production, it is necessary to elucidate the physiological characteristics of a particular strain during cell growth and develop an appropriate artificia...

Magnetotactic bacteria (MTB) are a heterogeneous group of aquatic prokaryotes with a unique intracellular organelle, the magnetosome, which orients the cell along magnetic field lines. Magnetotaxis is a complex phenotype, which depends on the coordinate synthesis of magnetosomes and the ability to swim and orient along the direction caused by the interaction with the Earth's magnetic field. Alt...

Magnetotactic bacteria have the ability to orient along geomagnetic field lines based on the formation of magnetosomes, which are intracellular nanometer-sized, membrane-enclosed magnetic iron minerals. The formation of these unique bacterial organelles involves several processes, such as cytoplasmic membrane invagination and magnetosome vesicle formation, the accumulation of iron in the vesicl...