Navigation Links
From toxicity to life: Arsenic proves to be a building block
Date:12/2/2010

otopic analysis down to the 50-nanomenter scale; it also offers a range of advantages for sensitive and high-resolution measurements.

"It turned out the organism was able to tolerate these heavy metal concentrations (that are found in Mono Lake)," Pett-Ridge said. "Arsenic is right below phosphorous on the periodic table and it may have found a way to substitute arsenic for phosphorous in its biological makeup."

Cultures of the Mono Lake samples produced flourishing colonies of the bacterium cells, as expected, when fed a steady supply of phosphorus, along with other necessities. When researchers removed the phosphorus and replaced it with arsenic, however, the microbes continued to grow. Subsequent analyses indicated that the arsenic was being used to produce the building blocks of new cells.

"The team hasn't yet established how the organism uses arsenic as a building block when it's a poison to most other life forms," Pett-Ridge said. "It could be an ancestral trait or a unique kind of metabolism. Or it could be that it lives in an environment where arsenic is very high and it found a niche to survive."

"This organisms' metabolic lifestyle suggests that life based on non-typical elements may be possible," Wolfe-Simon said. "This is important to scientists looking for clues to life on other planets."

NanoSIMS not only measures the elemental concentrations, but it also images them. It collects a picture of the image and identifies how much of a specific element is found in the sample. "We found that arsenic was higher in the cells than in the environment outside the cells," Pett-Ridge said.

"It's very difficult to make these measurements because the sample concentrations of arsenic are very low," she said. "But it's clear that the cells are incorporating arsenic into them. There are not a lot of organisms on the planet that can do this. "

The next step is to conduct protein biochemistry to find ou
'/>"/>

Contact: Anne Stark
stark8@llnl.gov
925-422-9799
DOE/Lawrence Livermore National Laboratory
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. UC Riverside biochemists devise method for bypassing aluminum toxicity effects in plants
2. Where theres wildfire smoke, theres toxicity
3. Nanoparticle toxicity doesnt get wacky at the smallest sizes
4. Countries unite to reduce animal use in product toxicity testing worldwide
5. Gene mutation increases drug toxicity, rejection risk in pediatric kidney transplants
6. Springer to publish Neurotoxicity Research
7. A breath of fresh air could improve drug toxicity screening
8. UR study reveals chemos toxicity to brain, possible treatment
9. Kill the cancer, not the patient: New toxicity testing approach could make chemo drugs safer
10. Gulf oil dispersants unlikely to be endocrine disruptors and have relatively low cell toxicity
11. Early-life experience linked to chronic diseases later in life: UBC research
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/21/2014)... , Nov. 19, 2014  Earlier this year ... New York College, and one of the most prolific ... signals that are transmitted from Smartphones to third party ... Smartphones and has one of the earliest known patents ... its usage in the military, child care, elder care ...
(Date:11/21/2014)... , Nov. 20, 2014   Atmel® Corporation ... microcontroller (MCU) and touch technology solutions, today launched the ... with the widest V cc range from ... accuracy and faster I 2 C bus communication speeds, ... EEPROM memory making them ideal for consumer, industrial, computer, ...
(Date:11/18/2014)... The Parenteral Drug Association (PDA) today confirmed that ... and at least seven more will participate in the upcoming ... Hotel in Washington D.C. , Dec. 2-4. ... support from the regulatory agencies in the United ... our effort to help advance the use of metrics in ...
Breaking Biology News(10 mins):Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 2Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 3Patented Biosensor Wearable Technology Provides a More Civilized Method of Quarantine 4Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 2Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 3Atmel Launches Industry's First Wide-V(cc) Low-Power Temperature Sensor Family 4FDA's Janet Woodcock, EMA's Emer Cooke Headline PDA Quality Metrics Conference 2
... As 17 countries and 30 organizations launch ... major environmental groups World Wildlife Fund, The ... governments, businesses, scientists, non-governmental organizations and individuals around ... coral reefs. The International Year of the Reef ...
... Stowers Institutes Proteomics Center has published a novel method ... of affinity purifications analyzed by mass spectrometry (APMS) to ... to associate with one another. The ... not only to the interactions within well-defined protein assemblies, ...
... as many scientists had given up the search, researchers ... cells with the capacity to generate new insulin-producing beta ... for humans, the newfound progenitor cells will represent an ... diabetes, the researchers report in the Jan. 25 issue ...
Cached Biology News:Environmental groups call for increased protection of coral reefs 2Stowers Proteomics Center devises method for assigning probabilities to human protein interactions 2Elusive pancreatic stem cells found in adult mice 2
(Date:12/24/2014)... Texas (PRWEB) December 23, 2014 ... methyl mercaptan such as its definition, classification, ... presents product specification, manufacturing process, and product ... technology and applications. The analysis also covers ... marketing channels, industry development trend and proposals. ...
(Date:12/24/2014)... AUSTIN, Texas , Dec. 23, 2014 /PRNewswire/ ... solutions company focused on gynecologic disease, announced today ... W. Schuler , Birchview Fund LLC and several ... million of unregistered shares of Vermillion,s common stock ... common stock in a private placement.  ...
(Date:12/22/2014)... The Center for Professional Innovation ... training across the life sciences industry, has partnered with ... to provide the organization's members with discounted classroom courses, ... the more than 350 sessions across 80 course titles. ... when registering for a public course at ...
(Date:12/22/2014)... MISSION VIEJO, Calif. , Dec. 22, 2014 /PRNewswire/ ... announce that CoPatient, an online medical bill review and ... newest offering in the FREE WellCard Savings discount health ... a medical bill that was more than they expected ... help members reduce health care costs, WellCard Savings is ...
Breaking Biology Technology:Worldwide Methyl Mercaptan Market 2015-2020 Forecasts on Development & Trends Now Available at ReportsnReports.com 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 2Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 3Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 4Vermillion Announces Equity Financing of up to $18.9 Million; Suspends ATM Program 5CfPIE Announces Partnership with the Society for Clinical Data Management 2CfPIE Announces Partnership with the Society for Clinical Data Management 3WellCard Savings Announces CoPatient Medical Bill Review Service for Members 2
... Truman Medical Centers (TMC),became one of the first hospitals ... AS 128 slice CT scanner this week. The 128-slice,CT ... with minimal radiation exposure to the patient., "To ... country to have this,truly, first of its kind, state-of-the-art ...
... - Enerkem Inc., a leading second,generation biofuels ... new Vice-Presidents to its executive team: Mr. ... Marie-Helene Labrie,Vice-President, Government Affairs and Communications., ... executives to our management,team," said Mr. Vincent ...
... Aug. 28 deCODE genetics,(Nasdaq: DCGN ) today ... deCODE,CSO Jeffrey Gulcher,s presentation at Thomas Weisel Partners Healthcare,Conference ... PM ET / 5:30 PM GMT / 6:30,PM British ... Seasons Hotel,Boston, MA. The webcast can be accessed through ...
Cached Biology Technology:Truman Medical Centers Becomes One of the First Hospitals in the U.S. To Install the World's First Adaptive 128-slice CT Scanner 2Enerkem Expands Executive Management Team 2deCODE genetics to Webcast Presentation at Thomas Weisel Partners Healthcare Conference 2008 2