Navigation Links
Researchers sequence dark matter of life
Date:9/18/2011

hers, recent studies have found, can change the way we behave by, for example, tricking us into eating more than we need. That's why it is crucial to analyze bacteria's genomes, which in turn help scientists understand bacteria's behavior.

Modern sequencing machines require DNA from one billion bacterial cells to produce a complete genome. Biologists usually grow the required amount of bacteria in cultures in the lab. That is how they obtained enough DNA to sequence E. coli. But a wide majority of bacteria99.9 percent according to some estimatescannot be cultured in the lab because they live in specific conditions and environments that are hard to reproduce, for example in symbiosis with other bacteria or on an animal's skin.

Enter Multiple Displacement Amplification (MDA) technology, developed about a decade ago by Professor Roger Lasken, now at the Venter Institute and co-author of the Nature Biotechnology study. MDA can be used on bacteria that can't be cultured in the lab. The technology is the equivalent of a copy machine that starts from a single cell and makes copies of fragments of its genome until it produces the equivalent of one billion cells. In 2005, Lasken and colleagues used MDA to sequence DNA produced from a single cell for the first time with funding from the Department of Energy.

However, while MDA is an ingenious cellular copy machine, it gives sequencing software programs a hard time. The DNA copies that MDA makes carry various errors and are not amplified uniformly: some pieces of the genome are copied thousands of times, and others only once or twice. Modern sequencing algorithms aren't equipped to deal with these disparities. In fact, they tend to discard bits of the genome that were replicated only a few times as sequencing errors, even though they could be key to sequencing the whole genome. The algorithm developed by Pevzner's team changes that. It retains these genome pieces and uses them to improve seq
'/>"/>

Contact: Ioana Patringenaru
ipatrin@ucsd.edu
858-822-0899
University of California - San Diego
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. NC State researchers get to root of parasite genome
2. Researchers find animal with ability to survive climate change
3. Researchers find an essential gene for forming ears of corn
4. Researchers note differences between people and animals on calorie restriction
5. Researchers study acoustic communication in deep-sea fish
6. Researchers discover that growing up too fast may mean dying young in honey bees
7. Researchers study how pistachios may improve heart health
8. UI researchers find potentially toxic substance present in Chicago air
9. Researchers develop new self-training gene prediction program for fungi
10. Case Western Reserve University researchers track Chernobyl fallout
11. Childrens National researchers develop novel anti-tumor vaccine
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Researchers sequence dark matter of life
(Date:10/15/2014)... Oct. 15, 2014   Neurotechnology , a ... the availability of the VeriLook Surveillance 3.0 ... provides real-time biometric face identification using live video ... cameras. The new version not only identifies faces ... from objects while they are moving through the ...
(Date:10/14/2014)... shows SIRT6—a protein known to inhibit the growth ... skin cancers by turning on an enzyme that increases ... Previously considered protective, SIRT6 is part of a family ... stability and prevent some of the genetic flaws associated ... lead to cancer. This study, in the journal,s October ...
(Date:10/14/2014)... house fly genome for the first time, revealing robust ... that thrives in pathogen-rich dung piles and garbage heaps. ... Genome Biology , will increase understanding of house ... adapt to resist insecticides, which could lead to novel ... and transmit more than 100 human and animal diseases, ...
Breaking Biology News(10 mins):VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 2VeriLook Surveillance 3.0 SDK Identifies Faces and Moving Objects, Differentiates Pedestrians from Other Moving Objects in Video Surveillance Systems 3Two-faced gene: SIRT6 prevents some cancers but promotes sun-induced skin cancer 2House fly genome reveals expanded immune system 2
... understand extreme sea creaturesExtraordinary creatures who inhabit extreme underwater ... three-year project. These deep-sea communities could reveal an evolutionary ... give us clues to how life could exist onother ... - incredibly hot environments in the deep sea - ...
... how Listeria monocytogenes, which causes a major ... and hide from the body's immune system. They believe ... , The Listeria bacterium, found in ... undercooked and unpasteurized food, causing flu-like symptoms or gastrointestinal ...
... blood pressure-lowering gene into cells and enables that gene to ... to take gene therapy for the disorder a step closer ... a report released online in the Proceedings of the National ... the leading causes of death and disability in adults worldwide," ...
Cached Biology News:Gene discovery sheds light on causes of rare disease, cancer 2Gene therapy to lower blood pressure just enough 2
(Date:10/22/2014)... 22, 2014   Synthetic Biologics, Inc. (NYSE ... for serious infections and diseases, announced today that the ... of Allowance for a composition of matter patent application ... program, SYN-004. This is Synthetic Biologics, first allowed ... and adds to the Company,s extensive C. difficile ...
(Date:10/22/2014)... HONG KONG , Oct. 22, 2014 ... enterprise, announced today that rare disease expert John ... president, research. Dr. McKew brings more than two decades ... at the National Institutes of Health, Wyeth Research and ... McKew will lead aTyr,s efforts to expand and translate ...
(Date:10/20/2014)... 20, 2014 Asterias Biotherapeutics, Inc. (NYSE ... signed a Notice of Grant Award (NGA) with ... October 1, 2014.  The NGA provides for the ... release of additional grant funds pursuant to the ... clinical development of Asterias, product, AST-OPC1. The grant ...
(Date:10/20/2014)... Oct. 20, 2014 PureTech , a ... big healthcare problems, announced today the closing of ... participation from Invesco Perpetual, a $120 Billion group ... drive PureTech,s existing pipeline forward and to advance ... the scientific creativity to really go for the ...
Breaking Biology Technology:Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 2Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 3Synthetic Biologics Announces Allowance of Key U.S. Composition of Matter Patent for C. difficile Program 4aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 2Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 4PureTech Announces Expansion with Oversubscribed $55M Funding Round 2PureTech Announces Expansion with Oversubscribed $55M Funding Round 3PureTech Announces Expansion with Oversubscribed $55M Funding Round 4PureTech Announces Expansion with Oversubscribed $55M Funding Round 5PureTech Announces Expansion with Oversubscribed $55M Funding Round 6
... (Nasdaq and SWX: BMRN) announced today that AnGes ... Japan, has,received approval for its Marketing Application for ... and Welfare,(MHLW) for the treatment of patients with ... to work with AnGes in bringing the first ...
... Company Cites Important Progress With Needle-free Vaccine Technology and ... Bird Flu ... March 31, 2008, IRVING, Texas, March 31 Carrington,Laboratories, Inc. ... net loss of $9.8 million, or ($0.90) per basic and,diluted share, ...
... Inc. (NYSE: CRY ),(the "Company"), a biomaterials, ... entered into a credit facility with GE Healthcare,Financial ... in revolving,credit for working capital, acquisitions and other ... at which time the outstanding,principal balance will be ...
Cached Biology Technology:Naglazyme Approved by Japanese Ministry of Health 2Naglazyme Approved by Japanese Ministry of Health 3Naglazyme Approved by Japanese Ministry of Health 4Carrington Reports 2007 Financial Results 2Carrington Reports 2007 Financial Results 3Carrington Reports 2007 Financial Results 4Carrington Reports 2007 Financial Results 5Carrington Reports 2007 Financial Results 6Carrington Reports 2007 Financial Results 7CryoLife Closes on $15 Million Credit Facility with GE Healthcare Financial Services 2CryoLife Closes on $15 Million Credit Facility with GE Healthcare Financial Services 3