Navigation Links
Bacteria which sense the Earth's magnetic field

Max Planck researchers uncover how a nanoscale 'compass' inside bacteria orients them to the Earth's magnetic field.

The entire bacterium is oriented like a compass needle inside the magnetic field. Until now, it was not clear how the cells organise magnetosomes into a stable chain, against their physical tendency to collapse by magnetic attraction. But using modern molecular-genetic and imaging processes, researchers from the Max Planck Institue for Marine Microbiology in Bremen and Max Planck Institute of Biochemistry in Martinsried, Germany have identified the protein responsible for creating the magnetosome chain. The scientists showed that this protein aligns the magnetosomes along a cytoskeletal structure which was previously unknown. This points to evidence that genetics regulate the magnetosome chain exactly. The structure is one of the most complex that has ever been found in bacterial cells. It is comparable to organelles that, until now, scientists had only been familiar with in higher organisms. (Nature, Advanced Online Publication, November 20, 2005).

Magnetotactic bacteria are widespread in the mud of marine environments. In their cell interior, they form magnetosomes which are aligned into a chain. The bacteria use them to distinguish "up" from "down" in the Earth's magnetic field, and navigate themselves confidently through layers of water to efficiently find optimal growth conditions. The magnetosomes are made of tiny crystals of the magnetic iron mineral magnetite (Fe3O4) -- only about 50 nanometres in size (one nanometre = one millionth of a millimetre).

To build magnetosomes, the cells do not only have to take up large amounts of iron from their surroundings and, from it, produce special iron oxide. The crystals also have to have a exactly defined number, form, and size, in order to be effective magnetic field sensors. To function optimally, the magnetosome crystals have to be strung into a straight chain inside the cell, t
'"/>

Source:Max-Planck-Gesellschaft


Page: 1 2 3 4

Related biology news :

1. Bacteria collection sheds light on urinary tract infections
2. Solution to Pollution: New Bacteria Eats Toxic Waste
3. The Bacterias guide to survival
4. UF Researchers Map Bacterial Proteins That Cause Tooth Loss
5. Bacterial genome sheds light on synthesizing cancer-fighting compounds
6. Where Bacteria Get Their Genes
7. Bacteria feed on smelly breath (and feet)
8. New insight into autoimmune disease: Bacterial infections promote recognition of self-glycolipids
9. Bacteria use hosts immune response to their competitive advantage
10. Say what? Bacterial conversation stoppers
11. Bacteria are key to green plastics, drugs
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Bacteria which sense the Earth magnetic field

(Date:10/29/2014)... At a ceremony held in New York City on ... King, the American Cancer Society Professor of Genome Sciences ... and 2008 Honorary Doctor of Philosophy of Tel Aviv ... in Medical Science. , In addition to her honorary ... Lecturer at the TAU School of Medicine, and for ...
(Date:10/29/2014)... One kind of stem cell, those referred to as ... There is apparently nothing that differentiates these cells from ... namely they retain the capacity to become stem cells ... liver, an organ that hosts cells that stimulate tissue ... the case of a transplant. Knowledge of the ...
(Date:10/29/2014)... in the living world compete with members of ... how much they invest into their competitive ability. ... get access to high-quality resources, while others seem ... the lower-quality resources that are left over for ... and human societies seems to fluctuate considerably over ...
Breaking Biology News(10 mins):Geneticist and humanitarian: Prof. Mary-Claire King receives Lasker Award 2A mechanism that allows a differentiated cell to reactivate as a stem cell revealed 2Evolution of competitiveness 2Evolution of competitiveness 3
... HOUSTON (Dec. 5, 2013) A new method ... proteins may speed the process of novel drug design, ... combination of computational techniques and experimental data helped Rice ... have been hard to detect. The work ...
... CHAMPAIGN, Ill. A 115-million-year-old fossilized wasp from northeast Brazil ... organ through which it lays its eggs, looks a lot ... figs. The problem, researchers say, is that figs arose about ... report of the findings appears in the journal ...
... levers: miniaturized robots of the future will be "soft". , ... to mind are the tentacles of an octopus or the ... a crane or the inner workings of a watch. And ... organisms moving in water. The robots of the future will ...
Cached Biology News:Proteins' passing phases revealed 2Proteins' passing phases revealed 3Ancient 'fig wasp' lived tens of millions of years before figs 2'Soft' (and miniaturized) robots 2
(Date:10/31/2014)... 31, 2014 Huge event with ... future pharma industry health, analysis and forecasting   ... the closing of its most successful show to date ... 2,500 exhibitors. Held this year in Paris ... key players from 140+ countries representing every step of ...
(Date:10/31/2014)... Jeffrey T. Manuel, assistant professor in Southern ... College of Arts and Sciences, is teaming up with ... alcohol-based fuels in Illinois. , “Farmers, researchers, ... to build Illinois’ biofuels industry for decades,” Manuel said. ... state's agricultural and business history. , “Fuel alcohol ...
(Date:10/31/2014)... ENVIRON , an international ... that Dr. Harvey Clewell III has rejoined the ... closely with senior professionals in ENVIRON’s Health Sciences ... at The Hamner Institutes for Health Sciences (The ... he is Director, Center for Human Health Assessment. ...
(Date:10/30/2014)... -- Investor-Edge has initiated coverage on the ... Inc. (NASDAQ: MDVN ), Pharmacyclics Inc. (NASDAQ: ... SYN), and Ironwood Pharmaceuticals Inc. (NASDAQ: IRWD). Free research ... http://investor-edge.com/register . On Wednesday, October 29, 2014, ... Dow Jones Industrial Average declined 0.18%, to finish the ...
Breaking Biology Technology:CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 2CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 3CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 4CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 5CPhI Worldwide 2014 Announces Biggest Ever Show and Points to Pharma Growth in Brazil, Russia and Fast Emerging Africa 6SIUE History Prof Manuel Working on Biofuels Book with NCERC 2SIUE History Prof Manuel Working on Biofuels Book with NCERC 3Internationally recognized health scientist Dr. Harvey Clewell renews association with ENVIRON 2Internationally recognized health scientist Dr. Harvey Clewell renews association with ENVIRON 3Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 2Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 3Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 4Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 5
... March 16, Shire plc (LSE: SHP, NASDAQ: ... the U.S. District Court of the Southern District of,New ... three,of Shire,s patents: U.S. Patent No. 5,968,976 (",976 Patent"); ... (",465"). , The lawsuit was ...
... AutoImmune Inc. (OTC Bulletin Board: AIMM) today reported a net ... for the three months ended December 31, 2008, compared with ... basic and diluted, for the three months ended December 31, ... loss was $345,000, or $0.02 per share basic and diluted, ...
... 16 Contamination by mycoplasmal organisms is an ... them ready sources of contamination, while rendering them ... white paper, examines how PCR mycoplasma tests ... minimizes testing delays and enable safe, high-volume biopharmaceutical ...
Cached Biology Technology:Shire Files Lawsuit Against Barr Laboratories for Infringement of FOSRENOL(R) (Lanthanum Carbonate) Patents 2AutoImmune Inc. Reports 2008 Fourth Quarter and Year End Financial Results 2AutoImmune Inc. Reports 2008 Fourth Quarter and Year End Financial Results 3AutoImmune Inc. Reports 2008 Fourth Quarter and Year End Financial Results 4New White Paper Examines Advanced Mycoplasma Tests - How Real-Time PCR Analysis Helps Save Time and Money for Biopharmaceutical Manufacturers 2New White Paper Examines Advanced Mycoplasma Tests - How Real-Time PCR Analysis Helps Save Time and Money for Biopharmaceutical Manufacturers 3
... the ideal CO2 incubator for cell and ... embryos at or near body temperature. HERAcell ... needed to protect and grow your valuable ... incubation conditions ensure optimum culture growth. ...
SP6 RNA Polymerase, 50 l, 20 U/l ,Cap Scribe Buffer, 100 l, 5x conc....
...
... High Vacuum pumps deliver critical performance ... gas ballast control optimizes pump performance to ... glass allows for convenient checking of proper ... series of pumps is designed to work ...
Biology Products: