HOME >> BIOLOGY >> NEWS
Bacteria use 'molecular lasso' to cop copper

The bacteria that destroy about one-third of the potent greenhouse gas methane before it can reach the atmosphere use a neat trick to gather a key nutrient for the job. They produce a small organic compound and release it into the surrounding environment, where it "lassos" atoms of copper. The bacteria then reabsorb the compound and use the copper as a weapon against methane, from which they extract energy. The crystal structure of the compound--called methanobactin--will be reported in the Sept. 10 issue of Science. The research was led by Hyung J. Kim, who did much of the work as a graduate student at the University of Kansas and is now a postdoctoral associate at the University of Minnesota College of Biological Sciences.

Methanobactin may have antibacterial properties, and its ability to absorb copper may find application in the semiconductor industry, which needs copper-free water.

The bacteria that make methanobactin are quite common.

"These bacteria are often found in rice paddies and wetlands," said Kim. "Methane is produced in the bottom muck and diffuses into the water, where these bacteria live. The bacteria sequester the methane and turn it into methyl alcohol."

According to estimates made in the 1990s, the amount of methane produced from all sources worldwide is about 120 billion tons per year, said Kim. About 40 percent comes from paddies and wetlands, and the methane-eating bacteria, known as methanotrophs, remove 80 to 90 percent of it. That translates to a methane diet of close to 43 billion tons a year.

Playing a pivotal role in this drama is the methanobactin molecule, a tiny, pyramid-shaped compound with a cleft that holds a single atom of copper in place. The bacteria churn out methanobactin molecules in large numbers and send them into the environment to fetch copper. When the compound returns with its booty, it is thought that the copper is incorporated into molecules of a key enzyme that converts me
'"/>

Contact: Deane Morrison
morri029@umn.edu
612-624-2346
University of Minnesota
9-Sep-2004


Page: 1 2

Related biology news :

1. Bacterial protein recycling factor possible key to new class of antibiotics
2. Bacteria spill their guts to aid researchers in quest for new antibiotics
3. Bacteria live in the esophagus!
4. Bacteria lingering in body may pose future food poisoning risks, Stanford study finds
5. Bacteria discoveries could resemble Mars, other planets
6. Bacterial relationships revealed
7. Bacteria-eating viruses may spread some infectious diseases
8. Bacteria convert food processing waste to hydrogen
9. Bacterial viruses make cheap easy vaccines
10. Bacterial infections alter allergic response
11. Bacteria cant do their thing if they dont have cling

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


(Date:3/28/2017)... , March 28, 2017 The ... Hardware (Camera, Monitors, Servers, Storage Devices), Software (Video Analytics, ... Region - Global Forecast to 2022", published by MarketsandMarkets, ... 2016 and is projected to reach USD 75.64 Billion ... and 2022. The base year considered for the study ...
(Date:3/24/2017)... 24, 2017 The Controller General of Immigration from ... Abdulla Algeen have received the prestigious international IAIR Award for the ... Continue Reading ... ... Controller Abdulla Algeen (small picture on the right) have received the IAIR ...
(Date:3/23/2017)... The report "Gesture Recognition and Touchless Sensing Market by Technology (Touch-based ... to 2022", published by MarketsandMarkets, the market is expected to be worth USD ... 2022. Continue Reading ... ... ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... and LAGUNA HILLS, Calif. , Oct. ... Cancer Research, London (ICR) and University ... SKY92, SkylineDx,s prognostic tool to risk-stratify patients with multiple myeloma ... MUK nine . The University of Leeds ... partly funded by Myeloma UK, and ICR will perform the ...
(Date:10/10/2017)... ... 2017 , ... San Diego-based team building and cooking events company, Lajollacooks4u, has ... The bold new look is part of a transformation to increase awareness, appeal to ... period. , It will also expand its service offering from its signature gourmet cooking ...
(Date:10/10/2017)... 10, 2017 International research firm Parks Associates announced ... at the TMA 2017 Annual Meeting , October 11 in ... residential home security market and how smart safety and security products impact ... Parks Associates: Smart Home ... "The residential security market has ...
(Date:10/9/2017)... DIEGO , Oct. 9, 2017  BioTech ... biological mechanism by which its ProCell stem cell ... critical limb ischemia.  The Company, demonstrated that treatment ... amount of limbs saved as compared to standard ... the molecule HGF resulted in reduction of therapeutic ...
Breaking Biology Technology:
Cached News: