The Magnetotactic Bacteria

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That internal compass of Bellini…? <strong>Magnetotactic</strong> <strong>Bacteria</strong> Biomineralize Magnetosomes Defined as an intracellular magnetic mineral crystal, either magnetite (Fe 3 O 4 ) or greigite (Fe 3 S 4 ), surrounded by a lipidbilayer membrane (the “magnetosome membrane”) From: Gorby, Beveridge & Blakemore, J. Bacteriol. 1988
Magnetosomes Note consistent speciesspecific magnetosome crystal morphology: First suggestion of genetic and crystallochemical control over magnetosome biomineralization Uncultured rod-shaped bacterium from Little Styx River, New Zealand Scale Bar = 0.5 µm (from R.P. Blakemore)
Page 1 and 2: Small Magnetism, Big Attraction: Th
Page 3 and 4: Some History The magnetotactic bact
Page 5: IMPORTANT FEATURES OF THE MAGNETOTA
Page 9 and 10: Magnetosome Crystal Magnetosome cry
Page 11 and 12: Magnetotactic Bacteria Generally Ar
Page 13 and 14: So Magnetosomes are Clearly a Maste
Page 15 and 16: South-seeking Magnetotactic Bacteri
Page 17 and 18: Genes and Proteins Involved in Cons
Page 19 and 20: Genes and Proteins Involved in Cons
Page 21 and 22: Role of Some of the Magnetosome Pro
Page 23 and 24: Other Magnetosome Proteins… MamB,
Page 25 and 26: Organization of the Magnetosome Gen
Page 27 and 28: Magnetosome Gene Island (MAI) in Ma
Page 29 and 30: With Chris Came Some New Ideas…
Page 31 and 32: What did we expect to find? But mag
Page 33 and 34: New Magnetotactic Bacteria of the N
Page 35 and 36: Strain LO-1 (cont.)
Page 37 and 38: Strain HSMV-1 (cont.)
Page 39 and 40: New Magnetotactic Bacteria of the P
Page 45 and 46: Magnetosomes of Strains BW-2 & SS-5
Page 47 and 48: Phylogeny of Strains BW-2 and SS-5
Page 49 and 50: Fe 3 O 4 and Fe 3 S 4 in the Same B
Page 51 and 52: Greigite-producing Rods Phylogeny T
Page 53 and 54: Strain BW-1 We are currently sequen
Page 55 and 56: Origin of Magnetotaxis and Magnetos
Page 57 and 58:
Acknowledgements Postdocs Denis Tru
Page 59:
Fe 3 O 4 particles are promiscuous!
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The Magnetotactic Bacteria

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