Navigation Links
Study of giant viruses shakes up tree of life
Date:9/13/2012

CHAMPAIGN, Ill. A new study of giant viruses supports the idea that viruses are ancient living organisms and not inanimate molecular remnants run amok, as some scientists have argued. The study reshapes the universal family tree, adding a fourth major branch to the three that most scientists agree represent the fundamental domains of life.

The new findings appear in the journal BMC Evolutionary Biology.

The researchers used a relatively new method to peer into the distant past. Rather than comparing genetic sequences, which are unstable and change rapidly over time, they looked for evidence of past events in the three-dimensional, structural domains of proteins. These structural motifs, called folds, are relatively stable molecular fossils that like the fossils of human or animal bones offer clues to ancient evolutionary events, said University of Illinois crop sciences and Institute for Genomic Biology professor Gustavo Caetano-Anolls, who led the analysis.

"Just like paleontologists, we look at the parts of the system and how they change over time," Caetano-Anolls said. Some protein folds appear only in one group or in a subset of organisms, he said, while others are common to all organisms studied so far.

"We make a very basic assumption that structures that appear more often and in more groups are the most ancient structures," he said.

Most efforts to document the relatedness of all living things have left viruses out of the equation, Caetano-Anolls said.

"We've always been looking at the Last Universal Common Ancestor by comparing cells," he said. "We never added viruses. So we put viruses in the mix to see where these viruses came from."

The researchers conducted a census of all the protein folds occurring in more than 1,000 organisms repres
'/>"/>

Contact: Diana Yates
diya@illinois.edu
217-333-5802
University of Illinois at Urbana-Champaign
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Study implicates marijuana use in pregnancy problems
2. University of Tennessee, ORNL lead national team to study nuclear fusion reactors
3. Study provides first-time analysis of 3 distinct contributions of forage fish worldwide
4. Mushroom-derived compound lengthens survival in dogs with cancer, Penn Vet study finds
5. Swim training plus healthy diet factor in cancer fight: New study
6. Turf study to monitor runoff, establish fertilizer management practices
7. UC Santa Cruz study shows how sea otters can reduce CO2 in the atmosphere
8. Study finds how BPA affects gene expression, anxiety; Soy mitigates effects
9. Studying sex differences in autism focus of $15 million NIH award to Yale center
10. UF Guantanamo Bay Lepidoptera study sets baseline for future research
11. Rice University researchers optimize photoluminescent probes to study DNA and more
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Study of giant viruses shakes up tree of life
(Date:12/11/2014)... N.C. , Dec. 10, 2014  That blood pressure plays ... a while. Hypertension – the medical term for high blood ... early 1800s, and the inflatable cuff that,s used in measuring ... however, mean there,s nothing new about hypertension, its triggers and ...
(Date:12/10/2014)... 2014 You,ve been here before: you desperately need to sign ... key or the answer to your secret question. What,s your dog,s ... Hoyos Labs , a digital infrastructure security company, launches ... frustration that comes with usernames, passwords and PINs – 1U ...
(Date:12/10/2014)... Forest Baptist Medical Center today announced plans for a new ... this $50 million capital project is part of a larger ... The medical education building will be located in ... to 525@vine in Wake Forest Innovation Quarter. Construction will begin ...
Breaking Biology News(10 mins):Research points to need for new approaches to treatment of high blood pressure 2Research points to need for new approaches to treatment of high blood pressure 3Research points to need for new approaches to treatment of high blood pressure 4The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 2The Password is Finally Dead: Launch of 1U Mobile App Eliminates Need for All Usernames and Passwords 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4
... Assistant Professor Frank J. Slack at Yale University has identified ... lung cancer, presenting new possibilities for diagnosis and treatment. The ... and Developmental Cell. , The oncogene Ras is out of ... over-expressed or activated by mutation. According to Slack, a member ...
... to block cat allergies successfully prevented allergic reactions in ... a test tube, University of California, Los Angeles (UCLA) ... available online now. In the future, the investigators say, ... not only for human cat allergies, but also possibly ...
... Researchers have created a way to transform the dead bone ... experiment involving mice. The advance, which uses gene therapy to ... bone, is a promising development for the thousands of cancer ... failing bone grafts. The findings were posted online Feb. 13 ...
Cached Biology News:Yale Scientists Find MicroRNA Regulates Ras Cancer Gene 2Novel Therapy Tested in Mice Could Chase Away Cat Allergies 2Novel Therapy Tested in Mice Could Chase Away Cat Allergies 3Gene therapy converts dead bone graft to new, living tissue 2Gene therapy converts dead bone graft to new, living tissue 3Gene therapy converts dead bone graft to new, living tissue 4
(Date:1/22/2015)... DE (PRWEB) January 22, 2015 Controlled ... Pistoia Alliance, which helps companies check the legal requirements ... to expand to China. , As their international ... are globally adopting software solutions built as a result ...
(Date:1/22/2015)... BRUNSWICK , Nueva Jersey , 22 de ... Award for Biomedical Research abre hoy su llamada a ... personas cuya investigación científica ha hecho, o tiene el ... la salud humana. Las nominaciones se aceptarán hasta el ...
(Date:1/22/2015)... , Jan. 22, 2015   GenoSpace , a precision ... tools to enable the broad use of genomic, imaging and ... the appointment of Michelle Munson , CEO of Aspera, ... Logo - http://photos.prnewswire.com/prnh/20150122/170713 ...
(Date:12/24/2014)... 24, 2014  United Therapeutics Corporation (NASDAQ: UTHR ... MDT ) has submitted a pre-market approval application to ... use of Medtronic,s SynchroMed ® II implantable drug ... with United Therapeutics, Remodulin ® (treprostinil) Injection delivered ...
Breaking Biology Technology:Global Compliance Service for Controlled Substances to Expand to China 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 2El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 3El Dr. Paul Janssen Award for Biomedical Research emite su llamada a los nominados para 2015 4GenoSpace Expands Board with Appointment of Michelle Munson 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 2United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 3United Therapeutics Announces Submission Of Pre-Market Approval Application For Implantable Drug Infusion System To Deliver Remodulin 4
... /Xinhua-PRNewswire-FirstCall/ -- China,Pharma Holdings, Inc. ("China Pharma") ... markets generic and branded bio/pharmaceutical,products in China, ... LLP (SIG)"Beijing Management Summit" held in Beijing, ... September 2008., Attending this conference and ...
... September 1 , With some 20,000 UK ... the,new school year, new guidance from the National ... to revolutionise the way children,manage their diabetes, granting ... access to insulin pump therapy. The new,recommendations finally ...
... the electrical units of voltage, resistance and current ... nowadays used. Important prerequisites are extremely pure semiconductor ... without collision with residual impurities. To be prepared ... set up a new molecular beam epitaxy system ...
Cached Biology Technology:British School Kids With Diabetes Gain First Time Freedom From Injections With New Insulin Pump Guidelines 2British School Kids With Diabetes Gain First Time Freedom From Injections With New Insulin Pump Guidelines 3British School Kids With Diabetes Gain First Time Freedom From Injections With New Insulin Pump Guidelines 4'Racetrack' for fast electrons in semiconductor structures 2
XA7 B6...
Curcumin is an extract of turmeric root with antioxidant, anti-tumor promoter, and anti-inflammatory properties. Curcumin inhibits the induction of NOS in macrophages....
... The MEGAscript RNAi Kit ... of large mass amounts of ... in non-mammalian systems. The MEGAscript ... Ambions patented high-yield transcription technol-ogy ...
Total Proteins from over 50 different human Alzheimer, Diabetic, Liver Cirrhosis, and Lupus diseased tissues are available....
Biology Products: