Navigation Links
Convergent evolution of molecules in electric fish

Having a set of extra genes gave fish on separate continents the ability to evolve electric organs, report researchers from The University of Texas at Austin.

Dr. Harold Zakon and colleagues, in a paper recently published in Proceedings of the National Academy of Sciences, show that African and South American groups of fish independently evolved electric organs by modifying sodium channel proteins typically used in muscle contraction.

Mutations in sodium channel proteins can cause serious muscular disorders, epilepsy and heart problems in humans and other vertebrates.

But fish have two copies of many of their genes, and Zakon found that the duplicate sodium channel gene could mutate and evolve without harming the fish.

"The spare gene gave [the electric fish] a little bit of evolutionary leeway," says Zakon, professor of neurobiology. "This is really one of the first cases that the ancestral gene duplication in fish has actually been linked to a gene that has been freed up and evolving in accordance with a 'new lifestyle.'"

Zakon and colleagues looked at two sodium channel genes in the electric organs and muscles in electric and non-electric fish. Electric fish use their electric organs, which are modified muscles, to communicate with each other and sense their environment.

The researchers found that electric fishes expressed one of the sodium channel genes in their electric organs only, while non-electric fish express both genes in their muscles.

"Most fish have both genes in the muscle, but as the new electric organ was evolving, the sodium channel--by being lost from the muscle--became devoted to the electric organ," Zakon says. "So two times, independently, the gene has been 'lost' from the muscle. It's no longer able to turn-on in a cell that for millions of years it turned on in, and now it's turning-on in this new organ."

When the research team looked at the sodium channel protein sequence
'"/>

Source:University of Texas at Austin


Page: 1 2

Related biology news :

1. Molecular biology fills gaps in knowledge of bat evolution
2. Same mutation aided evolution in many fish species, Stanford study finds
3. Researchers trace evolution to relatively simple genetic changes
4. Family trees of ancient bacteria reveal evolutionary moves
5. Great White shark evolution debate involves WSU Lake Campus geology professor
6. Revolutionary nanotechnology illuminates brain cells at work
7. The evolutionary triumph of flower power
8. MicroRNAs play a big part in gene regulation - and evolution
9. Enlisting genomics to understand flu evolution
10. Variation in HIVs ability to disable host defenses contributes to rapid evolution
11. Scientists track stealth DNA elements in primate evolution
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Convergent evolution molecules electric fish

(Date:2/5/2015)... TRIANGLE PARK, N.C. , Feb. 5, 2015 /PRNewswire/ ... a specialist logistics company and has launched a new ... only Clinical Logistics Organization (CLO).  The new campaign focuses ... emphasis on patient, protocol and shipments. The ... First , aligns Marken,s priorities with its client,s ...
(Date:2/5/2015)... Conn. , Jan. 26, 2015 NXT-ID, Inc. ... the "Company"), a biometric authentication company focused on the ... new corporate website ( http://www.nxt-id.com/ ) as part of ... smart wallet. The Company launched its new consumer website ... Gino Pereira , CEO of NXT-ID said, "Our new ...
(Date:2/5/2015)... SAN FRANCISCO , January 28, 2015 ... Camera Market Analysis, Size And Segment Forecasts To 2020 ... The global IR camera market is expected to reach ... study by Grand View Research, Inc. IR cameras help ... injuries, and are expected to witness surging demand in ...
Breaking Biology News(10 mins):Marken Launches New Patient-Centric Campaign 2NXT-ID, Inc. Launches New Corporate Website As Part Of Ongoing 2015 Branding Initiatives For Wocket Smart Wallet 2NXT-ID, Inc. Launches New Corporate Website As Part Of Ongoing 2015 Branding Initiatives For Wocket Smart Wallet 3IR Camera Market Worth $5.10 Billion By 2020: Grand View Research, Inc. 2IR Camera Market Worth $5.10 Billion By 2020: Grand View Research, Inc. 3
... some of the most pressing international issuessuch as renewable ... more pressing than ever that an informed public be ... science. The Ecological Society of America (ESA),s 93rd Annual ... the importance of using a broad range of tools ...
... Montana State University microbiologist Matthew Fields spends his days ... granted. Fields studies the physiology and behavior of ... every square inch of the earth,s surface for the ... impact," Fields said. "They grow fast and in large ...
... factors can transform the ratio of females to males in ... of Toronto. The study conducted ... and Spencer Barrett, a professor, involved a novel approach using ... seeds. The team investigated six natural populations of the wind-pollinated ...
Cached Biology News:Training future scientists at the Ecological Society of America's 93rd Annual Meeting 2MSU researcher uses grant to study little-known but largely useful microbes 2
(Date:2/27/2015)... 2015 Bionomics Limited (ASX:BNO, ADR:BMICY) is to ... BNC105 in patients with metastatic renal cancer at the ... . The data will be presented by Dr. ... Comprehensive Cancer Center in California ... data identifies Ferritin and IL-8 as two baseline biomarkers ...
(Date:2/27/2015)... , Feb. 27, 2015  Steep Hill, the industry ... and internationally, intends to open a full service medical ... Mexico , bringing advanced scientific tools and methodology ... Steep Hill is currently the only laboratory licensed ... potency and contaminant testing in order to meet the ...
(Date:2/26/2015)... , Feb. 26, 2015  23andMe, the leading ... Kate Black as Privacy Officer and Corporate Counsel. ... state privacy laws as well as health care regulations. ... she will be responsible for reviewing, updating and enhancing ... the U.S. and abroad. She joined the company January ...
(Date:2/26/2015)... 26, 2015 Protiviti ( www.protiviti.com ), a ... the Governance Portal , designed to increase the ... (GRC) tasks across multiple business units and projects. The ... customers better align their controls with the COSO ( ... requirements. In response to client feedback, Protiviti has also ...
Breaking Biology Technology:New BNC105 Biomarker Data to be Presented at US Cancer Conference 2New BNC105 Biomarker Data to be Presented at US Cancer Conference 3New BNC105 Biomarker Data to be Presented at US Cancer Conference 4New BNC105 Biomarker Data to be Presented at US Cancer Conference 5Steep Hill First to Receive Provisional Approval to Establish Laboratory Services for Cannabis Testing in State of New Mexico 223andMe Appoints Kate Black as Privacy Officer and Corporate Counsel 2Protiviti Governance Portal Helps Companies Drive Governance, Risk and Compliance Productivity Across Multiple Business Units 2Protiviti Governance Portal Helps Companies Drive Governance, Risk and Compliance Productivity Across Multiple Business Units 3
... fibers that are only one-tenth the size of a ... hold up to the intense heat and radiation of ... The Gen IV power-generating reactors are being designed to ... current reactors do not have. , The Department ...
... and scale of EDS services allow Bristol-Myers Squibb to ... focus on core biopharmaceutical business, ... million information technology (IT) services contract that,calls for EDS to ... scope and scale will allow the company to,improve productivity so ...
... and Tactical Importance of ... Needle-less Vaccinations, ... the DelSite Biotechnologies subsidiary of,Carrington Laboratories, Inc. (OTC Bulletin Board: ... program, while greatly,expanding the use of needle-less vaccines here and ...
Cached Biology Technology:Clemson researcher studies carbon fibers for nuclear reactor safety 2EDS Awarded $715 Million Contract for Bristol-Myers Squibb Information Services 2EDS Awarded $715 Million Contract for Bristol-Myers Squibb Information Services 3DelSite Nasal Powder Technology Could Reduce Recently Reported Waste in Federal Vaccine Program 2DelSite Nasal Powder Technology Could Reduce Recently Reported Waste in Federal Vaccine Program 3
Mouse monoclonal [6C3] to JAB1 ( Abpromise for all tested applications). entrezGeneID: 10987 SwissProtID: O15386...
Recombinant Ovine (Sheep) Prolactin, Ultra Pure...
Human LT beta R/TNFRSF3 Phycoerythrin MAb (Clone 71319)...
Human Serpin A3 MAb (Clone 213907)...
Biology Products: