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:9/10/2015)... This report provides detailed descriptions of the sensor types ... types that will dominate in the future. Many product ... technology hype curve in the last five years before ... all of them is the prominence of sensor options ... Sensors collect data about the physical and chemical properties ...
(Date:9/9/2015)... VANCOUVER, British Columbia , Sept. 9, 2015 ... achieved numerous organizational and solution-based milestones, furthering the ... the perils of online fraud. NuData ... key in enhancing the company,s growth cycle. The ... machine learning to determine good user behavior from ...
(Date:9/2/2015)... September 2, 2015 ... implied in a system which uses identical human ... iris, vein, DNA and finger print. Increasing number ... develop such system which provides high level of ... Patterns and tokens are vulnerable to attacks. Furthermore, ...
Breaking Biology News(10 mins):
... the globe to the tune of almost $65 billion during ... published in the International Journal of Biotechnology . ... farm level benefit after paying for the seed and its ... that was derived by farmers in the developing world. ...
... differences displayed by social insects evolve more rapidly than ... study has found. All species of life ... the genes they express, ultimately becoming different shapes, sizes, ... successfully in their environments. A new study of the ...
... million people in the United States live with heart failure, ... blood around the body effectively. The causes and types of ... each patient. In some cases, doctors will prescribe a class ... cause dangerously high levels of potassium in the blood (hyperkalemia) ...
Cached Biology News:
(Date:10/8/2015)... , Oct. 8, 2015  Today, DuPont and ... for genome editing, jointly announced a strategic alliance. ... cross-licensed their respective patent portfolios, with DuPont receiving ... in major row crops, and non-exclusive rights in ... --> --> In ...
(Date:10/8/2015)... the Wyss Institute for Biologically Inspired Engineering at Harvard ... Opsonix Inc. The announcement follows a worldwide exclusive ... (OTD) and Opsonix Inc. enabling the company to ... --> --> Pathogen-induced ... in the U.S. — more than prostate cancer, breast ...
(Date:10/8/2015)... ... October 08, 2015 , ... ProMIS Neurosciences, Inc. ... to develop and commercialize intellectual property rights belonging to The University of British ... and affords exclusive worldwide rights to intellectual property based on use of the ...
(Date:10/7/2015)... , Oct. 7, 2015 Boston ... the start of the Boston Scientific Connected Patient ... advancements in the use of remote patient monitoring to ... designers and entrepreneurs can submit their ideas and collaborate ... ( ). Cambridge, MA ...
Breaking Biology Technology:
... Million for Q3 of 2007 versus $5.2 Million ... for Q3 of 2006, -- Gross profit increases 102% ... ... of $12.5 Million of Debt to Equity, BEIJING, Nov. 23 /Xinhua-PRNewswire/ -- China Biopharmaceuticals,Holdings, ...
... PARIS, Nov. 23 Bristol-,Myers Squibb Company (NYSE: ... today,that they are terminating their license agreement for ... for the treatment of,advanced or metastatic bladder cancer ... Fabre Medicament and licensed to Bristol-Myers Squibb,in 2004 ...
... France, November 22 ,Essilor yesterday cancelled 700,000 shares ... the dilutive impact of stock option and performance,share ... Board of Directors authorized the,granting of 930,740 stock ... will potentially lead to the issuance of up ...
Cached Biology Technology:
BD Falcon microtest assay plate. 1536 well 12l, black BD Optilux PS. Polystyrene, nonsterile, no lid (15/sp, 60/ca) Packaging: 15 / pack, 60 / case ...
... all plate washing needs in both the 384-well ... 384 provides an excellent solution for a variety ... development, Screening or Lead Optimization) and Research. ... 384 has set a standard for ultra-fast washing ...
... MULTI-FUN Incubator is a compact benchtop ... a microprocessor controller with a large ... and agitation speed. Air circulation inside ... incubator. Temperature can be easily calibrated ...
... emerging as a powerful new tool for ... only amino groups have been able to ... as our Sulfo-SBED. Sulfhydryl-reactive Mts-Atf-Biotin and its ... to the protein interaction tool chest that ...
Biology Products: