Navigation Links
Weird, ultra-small microbes turn up in acidic mine drainage

for archaeal Richmond Mine acidophilic nanoorganisms, is ellipsoidal and only 200-400 nanometers in diameter, one-third the diameter of the rod-shaped E. coli.

The team reconstructed the genomes of three distinct lineages of ARMAN and found them to be tiny a mere 1 million base pairs, in contrast to hundreds of billions in humans. In the smallest of the three, the average gene length is only 774 base pairs, in contrast to the average gene length in humans of 10,000 to 15,000 base pairs. Base pairs, the smallest chemical units of the gene, are nucleic acids that come in four forms. The base pairs are chained together to make DNA, and a gene is a sequence of base-pairs coding for a unique protein.

The genomes are so small that the researchers initially suspected that the ARMAN microbes are parasites upon other microbes, since parasites can afford to lose genes that their host already has.

But of the 70 individual specimens so far imaged in 3-D, 90 percent seem to be free-living. The other 10 percent are impaled on the mysterious needle-like spines of Thermoplasmatales, the other Archaea living alongside ARMAN in the mine. The researchers suspect that the penetrating spines may mean that the microbes live off other microbes at least part of the time, unlike symbiotic organisms or parasites, which must always associate with other organisms to live.

"ARMAN are among the smallest microbes we know of that, if not free-living, are at least not permanently obliged to be a parasite or symbiont," Comolli said.

The cells are about as large as the largest viruses, which can replicate only in living organisms and are not considered to be "living."

"The genome is very compact," Baker added." A microbial genome 10 percent larger has the same number of genes as ARMAN."

The organism has a much higher percentage 45 percent of unknown genes than any other organism sequenced, he said.

"ARMAN share

Contact: Robert Sanders
University of California - Berkeley

Page: 1 2 3

Related biology news :

1. Microbes contribute less to climate warming
2. Earth microbes may contaminate the search for life on Mars
3. Soil microbes produce less atmospheric CO2 than expected with climate warming
4. Explorers census hard-to-see sea life: microbes, tiny animals key to Earths food, carbon systems
5. Dormant microbes promote diversity, serve environment
6. Microbes produce fuels directly from biomass
7. Hot microbes cause groundwater cleanup rethink
8. Marine microbes creating green waves in industry
9. Marine microbes creating green waves in industry
10. Microbes and their hosts -- exploring the complexity of symbiosis in DNA and cell biology
11. Methane-eating microbes can use iron and manganese oxides to breathe
Post Your Comments:
Related Image:
Weird, ultra-small microbes turn up in acidic mine drainage
(Date:7/31/2015)... China , 31 de julio de 2015 /PRNewswire/ ... Genómica (ICG-10, ) del 22 al 25 de ... . La conferencia celebra su décimo aniversario ... ha convertido en una de las reuniones anuales más ... y es una de las conferencias científicas más dinámicas, ...
(Date:7/31/2015)... Die 10. internationale Konferenz zu Genomik ... und findet vom 22. bis 25. Oktober 2015 ... Die Konferenz feiert in diesem ... ist die ICG weltweit zu einem der einflussreichsten ... eines der dynamischsten, enthusiastischsten und angenehmsten wissenschaftlichen Zusammentreffen. ...
(Date:7/27/2015)... , July 27, 2015  Synaptics Inc. ... human interface solutions, today announced that Huawei has ... touchscreen solution for its stylish smartwatch. Huawei chose ... proven reliability, low power and highly responsive human ... finger. Huawei designers also required a classic round ...
Breaking Biology News(10 mins):La 10ª Conferencia Internacional sobre Genómica (ICG-10) comienza en octubre 2La 10ª Conferencia Internacional sobre Genómica (ICG-10) comienza en octubre 3Die 10. internationale Konferenz zu Genomik (ICG-10) beginnt im Oktober 2Die 10. internationale Konferenz zu Genomik (ICG-10) beginnt im Oktober 3Synaptics Touchscreen Solution Powers New Huawei Watch 2Synaptics Touchscreen Solution Powers New Huawei Watch 3
... of Toronto that stimulates the muscles of patients with spinal ... condition is not expected to improve. , U of ... process that sends controlled bursts of electricity through the skin ... stride length and overall walking speed. , "This is a ...
... methane-producing bacteria frozen at the bottom of Greenland's two-mile ... similar bacterial life on Mars. , Methane is a ... and Mars. If a class of ancient microbes called ... scientists have proposed, then unmanned probes to the Martian ...
... research by a team of scientists in France and ... host receptor proteins that enable Rickettsia conorii, the Mediterranean ... bacterium interacts with the cells of its host could ... related pathogens, including Rocky Mountain spotted fever and ...
Cached Biology News:Microbes under Greenland Ice may be preview of what scientists find under Mars' surface 2Microbes under Greenland Ice may be preview of what scientists find under Mars' surface 3How Rickettsial pathogens break into cells 2
(Date:8/4/2015)... -- Trigemina, Inc., a biopharmaceutical company focused on the ... products, announced today that the company has appointed Shashidhar ... officer. Dr. Kori brings over 30 years of clinical ... focused in the neuroscience and headache space. ... clinical team given his vast experience managing clinical development ...
(Date:8/4/2015)... ... August 04, 2015 , ... On August 4, 2015, the White ... of entrepreneurs from across the United States to talk about their experiences with innovation ... be chosen to be among the attendees. , One of the day’s aims is ...
(Date:8/3/2015)... , August 3, 2015 At ... Portland Hospital waved the shortfall of Jude ... stand normally for the first time.      ... ) The Selective Dorsal ... allowing him to carry out his wish to kick ...
(Date:8/3/2015)... -- Aethlon Medical, Inc. (Nasdaq: AEMD ), the pioneer ... today announced that it will host its First Quarter ... August 13, 2015 at 4:30 p.m. Eastern Time. ... of fiscal 2016 first quarter results.  A recorded version ... after the call at the Investor Relations portion of ...
Breaking Biology Technology:Trigemina Appoints Dr. Shashi Kori to the Position of Chief Medical Officer 2Trigemina Appoints Dr. Shashi Kori to the Position of Chief Medical Officer 3White House Invites uBiome CEO Jessica Richman to First-Ever Startup Demo Day 2Cerebral Palsy Operation by The Portland Hospital Allows a Boy to Stand Properly for the First Time 2Cerebral Palsy Operation by The Portland Hospital Allows a Boy to Stand Properly for the First Time 3Aethlon Medical To Host First Quarter Fiscal 2016 Investor Call on August 13, 2015 2
... Metavante Corporation and First Data ... definitive agreement that provides for the purchase of substantially ... by Metavante for approximately $610 million in cash. As ... receive approximately $389 million and NYCE will become a ...
... and Dane County directory of high-technology companies was released ... and the City of Madisons office of business resources, ... High-Tech Companies is designed to provide both company ... ,Jim Mohrbacher, MG&E business development manager, who coordinates the ...
... joint effort of industry, government, and more than ... and Marquette University), Internet2 is leading the way ... applications. But effective access to Internet2s main infrastructure ... Information Officer and Director of the Division ...
Cached Biology Technology:Metavante and First Data to buy PIN-debit company NYCE 2Dane Country high-tech businesses continue to flourish 2Dane Country high-tech businesses continue to flourish 3From the back roads to the superhighway: Making the connection to Internet2 2
... polystyrene with frosted labeling surfaces, volume ... counting. 100% integrity tested. Linkage: This ... number, created to easily match Cornings ... yet, please order under the old ...
... CellBIND surface is produced by a ... more hydrophilic surface giving more consistent, ... and yields. CellBIND enhances cell attachment ... reduced serum or serum-free medium. • ...
iNOS/NOS Type II Purified Anti-Mouse, Anti-Rat, Anti-Human clone Polyclonal, Isotype Rabbit Ig, 150 µg Consult technical datasheet for details....
... 100-240 V, uses multiplex suspension array technology ... up to 100 proteins and peptides in ... is composed of up to 100 color-coded ... conjugated with a unique reactant specific to ...
Biology Products: