Navigation Links
New research shows how gene function drives natural selection in important class of genetic elements
Date:12/10/2008

Athens, Ga. Transposons are the Clark Kents of a genome. Apparently mild-mannered and inconsequential but with sudden bursts of activity, these free-floating bits of genetic material have for millions of years been sneaking into the genetic maps of plants and animals, dramatically increasing a genome's size.

For years, researchers thought that most of this DNA was passive "junk" and knew little about it. New findings, however, are peeling back the odd and baffling world of transposons. Now, researchers at the University of Georgia have just found that natural selection on gene function is driving the evolution of one kind of transposable element called the LTR retrotransposon. (LTR refers to the "long terminal repeat"a repetition of a recognizable sequence of nucleotides, the chemical bases that make up strands of DNA.)

"The lab of Professor Jeff Bennetzen at UGA discovered that this class of mobile DNA comprises more than half of most plant genomes and has led the way in determining the extraordinary rates of both amplification and removal of this type of repetitive element," said Regina Baucom, a genetics post-doctoral research assistant at UGA and lead author of the research.

Understanding the evolutionary pressures between host genome and transposable element will in the future be of interest to those studying retroviruses, which evolved from retrotransposons. There are a number of animal and human diseases caused by retroviruses including HIV/AIDS, avian leukosis and feline leukemia.

"Because LTR retrotransposons are abundant and impact host genomes, we wanted to determine the influence of natural selection on their evolution," said Baucom. "We find that the genes involved in their replication are subject to Darwinian evolutionthe same evolutionary processes that affect species."

Other authors of the paper just published in the online version of the journal Genome Research, were Jeff Bennetzen, in wh
'/>"/>

Contact: Phil Williams
phil@franklin.uga.edu
706-542-8501
University of Georgia
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. UNH researchers track lobster migrations to improve population estimates
2. Siblings of mentally disabled face own lifelong challenges, according to researchers
3. Caltech researchers get first look at how groups of cells coordinate their movements
4. Computation and genomics data drive bacterial research into new golden age
5. Leeds research points to new therapy for hepatitis C treatment
6. Properties of unusual virus revealed in research
7. U of Minnesota researcher finds link between aggression, status and sex
8. Researchers study virus with unusual properties
9. Dune and dirty: Hurricane teaches lessons through ecosystem research
10. Key to curing obesity may lie in worms that destroy their own fat: McGill researchers
11. Massague honored with inaugural AACR Distinguished Leadership Award in Breast Cancer Research
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New research shows how gene function drives natural selection in important class of genetic elements
(Date:6/16/2015)... , June 16, 2015 Fingerprint ... touch fingerprint sensors in the company,s portfolio from one of ... are planned to mainly take place during the third quarter ... Asia . Jörgen Lantto, CEO ... of    the   growing interest from smartphone OEMs in ...
(Date:6/15/2015)... YORK , June 15, 2015 ... today from Telstra reveals the majority of US consumers using ... them via biometrics, such as fingerprint and voiceprint, instead of ... According to Telstra,s " Mobile Identity   - ... " report, with smartphones now the primary channel used ...
(Date:6/11/2015)... 11, 2015 Daon, a global leader ... its IdentityX Mobile Authentication Platform v4.0 has been ... is an industry consortium launched in 2013 to ... stronger authentication.  In order to receive certification, a ... series of tests that measure compliance and ensure ...
Breaking Biology News(10 mins):FPC Receives Order for Touch Fingerprint Sensors of 375 MSEK 2One in Four US Consumers Would Share Their DNA With Their Bank to Secure Financial and Personal Information, Telstra Report Finds 2One in Four US Consumers Would Share Their DNA With Their Bank to Secure Financial and Personal Information, Telstra Report Finds 3One in Four US Consumers Would Share Their DNA With Their Bank to Secure Financial and Personal Information, Telstra Report Finds 4Daon's IdentityX Mobile Authentication Platform One of First Products to be Certified by FIDO Alliance 2
... Group, Inc. (OTC Bulletin Board: MDXG ), ... biomaterial-based products, announced today that its results for the ... and Company guidance will be released after the closing ... timing of the earnings announcement allows MiMedx time to ...
... the oocysts from the Cryptosporidium genus and cysts ... greatest public health problems in water supply, because these parasites ... Hermida, a scientist at the Galician Institute for Food Quality ... A team led by this researcher took 232 water samples ...
... at IRB Barcelona have completed the 3D structural sequence ... substances between the extra and intracellular milieu. This finding ... occur in these relevant proteins during basic cell processes, ... cell volume, and nerve transmission. The exchange ...
Cached Biology News:MiMedx Group, Inc. Announces Release Date for 2010 Fourth Quarter and Full Year Results 2Parasitic protozoons survive waste water and drinking water treatment plants in Galicia 2Researchers achieve a full film frame of a family of proteins essential for cell function 2
(Date:6/26/2015)...  SeraCare Life Sciences, a leading partner to ... it has signed a Cooperative Research and Development ... part of the National Institutes of Health, to ... assays.  The CRADA will investigate the development of ... biosynthetics spiked into a genomic DNA background and ...
(Date:6/26/2015)... ... June 26, 2015 , ... ... Agriculture (USDA), Grain Inspection, Packers and Stockyards Administration (GIPSA) awarded a five year ... in feed and grains utilizing Charm’s ROSA DONQ-FAST5 Test. This 5 minute quantitative ...
(Date:6/26/2015)... ... June 26, 2015 , ... Claremont BioSolutions, LLC, ... have been integrated into a sample prep module intended to enable real-time quantitative ... of the NASA’s WetLab-2 Project. , On June 28, 2015, SpaceX CRS-7 will ...
(Date:6/26/2015)... 2015 The report "Biolubricants Market ... Metalworking fluids, Chainsaw oils, Mold Release Agents), End Use ... Global trends and Forecasts to 2020" published by MarketsandMarkets, ... by 2020 at a CAGR of 6.27% between 2015 ... Tables and   66 Figures spread through 170 Pages ...
Breaking Biology Technology:SeraCare Life Sciences Signs CRADA with NCI to Advance Cancer Diagnostics 2SeraCare Life Sciences Signs CRADA with NCI to Advance Cancer Diagnostics 3USDA-GIPSA (FGIS) Awards 5 Year Contract for Vomitoxin Tests to Charm Sciences 2Claremont BioSolutions’ SimplePrep™ Products Deployed in NASA Wetlab-2 Project Slated for June 28th Flight to International Space Station aboard SpaceX CRS-7 2Claremont BioSolutions’ SimplePrep™ Products Deployed in NASA Wetlab-2 Project Slated for June 28th Flight to International Space Station aboard SpaceX CRS-7 3Biolubricants Market Worth $2,972.13 Million by 2020 2Biolubricants Market Worth $2,972.13 Million by 2020 3
... 11 CV Therapeutics,Inc. (Nasdaq: CVTX ) today ... 2007 after the market closes on Tuesday, November 6,2007. ... p.m. EST,1:30 p.m. PST, on the company,s website. ... the Company,s website at, http://www.cvt.com and go to ...
... - The Board of,Directors of Immunotec Inc. is ... A. Northrop as President and Chief Executive Officer, ... Board of Directors of Immunotec Inc., Mr. Northrop ... success in rapid growth,situations, Mr. Northrop has impressive ...
... an Eden Prairie-,based molecular diagnostics service and technology company, ... its CFO, and Elizabeth A. Skinner,as VP - Legal, ... of Edwin Watts Golf, and has previously,served as VP ... Allied Signal,Aerospace, and corporate controller of NCR Corporation. He ...
Cached Biology Technology:CV Therapeutics To Announce 2007 Third Quarter Financial Results on Tuesday, November 6, 2007 2Immunotec Inc. announces appointment of President & CEO James A. Northrop 2Access Genetics Announces New Executive Appointments 2
Ethylene glycol-bis(2-aminoethyl ether)-N,N,N',N'-tetraacetic acid, Molecular Biology Grade...
Ethylene glycol-bis(2-aminoethyl ether)-N,N,N',N'-tetraacetic acid, Molecular Biology Grade...
... for relax positively and negatively supercoiled DNA in ... , Studying the effects of supercoiling on transcription ... vitro , Determining the degree of supercoiling ... plasmids that differ in length by only one ...
Kit Components: Anti-PARP LumiGLO Chemiluminescent Substrate Immunoblot Blocking Reagent Pyronin Y Reagent Goat Anti-Rabbit IgG, HRP conjugate Double-It Reagent Film Exposure Folders Autor...
Biology Products: