HOME >> BIOLOGY >> NEWS
A closer look yields new clues to why bacteria stick to things

A bacterium's ability to change its hairstyle may help in the effort to clean contaminated groundwater for drinking, according to Penn State researchers.

People are continually moving into places that are hot, sunny and arid where drinking water is in short supply, says R. Kramer Campen, Penn State graduate student in geosciences. "The imperative to find ways to clean groundwater is paramount," he told attendees today (March 25) at the 225th American Chemical Society national meeting in New Orleans.

In the ocean, bacteria can be released into the water to clean up oil spills, carried to the target by the same currents that transport the oil. Groundwater poses a more difficult problem as these single-cell organisms tend to adhere to certain minerals in the soil preventing them from following the pollutant's trail. Bacterial adhesion is also responsible for many medical problems such as tooth decay and artificial limb and organ rejection. "There is a growing awareness that you need a molecular level understanding," says Campen. "At that level, the processes that cause a bacterium to adhere to a mineral in soil or to a tooth have to be the same."

For many years, scientists have noted that bacteria stick to iron particles in soil, but not to sand grains. Until recently, this has been explained by invoking the same forces that hold a balloon to the ceiling after you rub it on your sweater. Researchers thought that the tiny, negative electrical charges on sand grains repelled the negatively charged bacteria, while the positively charged iron attracted them.

However, Campen and his adviser, James Kubicki, assistant professor of geosciences, think it is all about the hair. Bacteria are covered with atomic-scale chains of complex sugar molecules with "one end fastened into the cell membrane and the rest extending outward," explains Campen. "The hair analogy is a good one."

The hairs, actually polymers, present a problem for the charge-based e
'"/>

Contact: A'ndrea Elyse Messer
aem1@psu.edu
814-865-9581
Penn State
25-Mar-2003


Page: 1 2

Related biology news :

1. New diagnostic tool brings effective treatment closer to patients
2. Researchers one step closer to Holy Grail of neurobiology
3. Getting closer
4. Neural stem cells take a step closer to the clinic
5. Technique brings immune-based therapies closer to reality
6. Dartmouth engineers closer to mass-producing therapeutic proteins
7. Crash in male saiga antelope numbers drives species closer to extinction
8. Researchers closer to defining function of two proteins involved in neurotransmitter release
9. A closer look at the genomes black holes
10. New mighty mice research brings muscle growth closer to reality
11. Hormone the trigger for fat metabolism; scientists closer to tests in humans

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/31/2016)... R.I. , March 31, 2016  Genomics firm ... of founding CEO, Barrett Bready , M.D., who ... members of the original technical leadership team, including Chief ... President of Product Development, Steve Nurnberg and Vice President ... returned to the company. Dr. Bready served ...
(Date:3/23/2016)... March 23, 2016 ... Sicherheit Gesichts- und Stimmerkennung mit Passwörtern ... (NASDAQ: MESG ), ein führender Anbieter ... Unternehmen mit SpeechPro zusammenarbeitet, um erstmals dessen ... wird die Möglichkeit angeboten, im Rahmen mobiler ...
(Date:3/22/2016)... Ontario , PROVO and ... Newborn Screening Ontario (NSO), which operates the ... for molecular testing, and Tute Genomics and UNIConnect, ... management technology respectively, today announced the launch of a ... next-generation sequencing (NGS) testing panel. NSO ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... ... June 24, 2016 , ... While the majority of commercial spectrophotometers and fluorometers ... the 6000i models are higher end machines that use the more unconventional z-dimension of ... beam from the bottom of the cuvette holder. , FireflySci has developed several ...
(Date:6/23/2016)... 2016 /PRNewswire/ - FACIT has announced the creation ... biotechnology company, Propellon Therapeutics Inc. ("Propellon" or "the ... a portfolio of first-in-class WDR5 inhibitors for the ... WDR5 represent an exciting class of therapies, possessing ... for cancer patients. Substantial advances have been achieved ...
(Date:6/23/2016)... 2016  The Biodesign Challenge (BDC), a university competition ... harness living systems and biotechnology, announced its winning teams ... New York City . The ... projects at MoMA,s Celeste Bartos Theater during the daylong ... senior curator of architecture and design, and Suzanne ...
(Date:6/23/2016)... Apellis Pharmaceuticals, Inc. today announced positive ... its complement C3 inhibitor, APL-2. The trials were ... studies designed to assess the safety, tolerability, pharmacokinetics ... healthy adult volunteers. Forty subjects were ... dose (ranging from 45 to 1,440mg) or repeated ...
Breaking Biology Technology:
Cached News: