Navigation Links
For bats and dolphins, hearing gene prestin adapted for echolocation
Date:7/31/2014

A little over a decade ago, prestin was found to be a key gene responsible for hearing in mammals. Prestin makes a protein found in the hair cells of the inner ear that contracts and expands rapidly to transmit signals that help the cochlea, like an antique phonograph horn, amplify sound waves to make hearing more sensitivity.

Now, in a new study published in the advanced online edition of Molecular Biology and Evolution, Peng Shi, et al., have shown that prestin has also independently evolved to play a critical role in the ultrasonic hearing range of animal sonar, or echolocation, to help dolphins navigate through murky waters or bats find food in the dark.

Although both toothed whales and echolocating bats can emit high frequency echolocation calls, which show a substantial diversity in terms of their shape, duration, and amplitude, they receive and analyze the echoes returned from objects by their high-frequency hearing. The research team finely dissected the function of the prestin protein from 2 sonar guided bats and the bottlenose dolphin compared with non-sonar mammals.

Evolutionary analyses of the prestin protein sequences showed that a single amino acid change in prestin, from a threonine (Thr or T) in all sonar mammals to an asparagine (Asn or N) in all non-sonar mammals, was subject to parallel evolution, suggesting that it may play a critical role for mammalian echolocation. Further experiments supported this assumption and identified 4 key amino acid differences amongst the sonar mammals, which may contribute to their unique features . Taken along side evolutionary analyses, these findings offered the first functional evidence supporting the notion that the hearing gene of prestin evolved to play a key role in the sonar system of mammals.


'/>"/>

Contact: Joe Caspermeyer
MBEpress@gmail.com
480-258-8972
Molecular Biology and Evolution (Oxford University Press)
Source:Eurekalert

Page: 1

Related biology news :

1. Hearing protein required to convert sound into brain signals
2. Scientists test hearing in Bristol Bay beluga whale population
3. New idea for hearing improvement in patients with hearing aids under background noise
4. Understanding hearing
5. Identifying a mystery channel crucial for hearing
6. Now hear this: Scientists discover compound to prevent noise-related hearing loss
7. Cellular channels vital for hearing identified
8. Study: Resveratrol shows promise to protect hearing, cognition
9. UI researcher learns mechanism of hearing is similar to car battery
10. Dolphin hearing system component found in insects
11. USF researchers identify gene mutation linked to old age hearing loss
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/24/2015)... 22, 2015 Research ... of the "Huawei Ascend Mate 7 Fingerprint ... their offering. Huawei,s technological choice for ... direction than Apple,s and Samsung,s one. The Ascend ... by Fingerprint Cards, a main actor in capacitive ...
(Date:6/23/2015)... MINNETONKA, Minn. , June 23, 2015 /PRNewswire/ ... technology company that supports the entire spectrum of ... iMedNet ™ , the company,s ... has been awarded a Silver 2015 Stevie® Award ... the Health Products & Services Website category.  The ...
(Date:6/23/2015)... June 23, 2015   Valencell, a ... results of a recent study that illustrates its ... wrist during activity. In a study conducted at ... along with the Apple Watch against a chest ... rate during activity. The study demonstrated that Valencell,s ...
Breaking Biology News(10 mins):Huawei Ascend Mate 7 Fingerprint Sensor - Reverse Costing Analysis 2MedNet Solutions' iMedNet eClinical Wins Silver Stevie Award 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 3
... (NTU), Singapore, aims to achieve new peaks in research ... of significance globally - synthetic biology, stem cells and ... held on 23 and 24 March 2009 that allowed ... opportunity to get to know the latest research and ...
... scientific works dealing solely with the flu virus, we ... says Klaus Schughart, head of the Experimental Mouse Genetics ... discovered that an excessive immune response is responsible for ... overreaction has genetic roots. The findings have now been ...
... Arbor, MI and Munich (Germany) March 26, 2009 ... for the analysis of Next Generation Sequencing (NGS) data, ... (MCTP) at the University of Michigan installed a Genomatix ... at its labs in Ann Arbor, MI. GMS and ...
Cached Biology News:Nanyang Technological University and University of California, Berkeley pursue research alliance 2The host makes all the difference 2MCTP bought Genomatix NextGen Sequencing analysis stations 2
(Date:7/1/2015)... July 1, 2015   Decision Resources Group ... advantages of Otezla are its oral administration, alternative ... reported by surveyed rheumatologists. Otezla was the first ... treatment of active psoriatic arthritis in ... of care includes conventional oral treatments including disease-modifying ...
(Date:7/1/2015)... 1, 2015 Isagenix International, a leading global ... Gold, three Silver, and three Bronze Stevie® Awards at ... Chicago this month.The American ... awards program in the U.S. "Winning ... in developing leaders, cultivating talent, creating a unified team, ...
(Date:7/1/2015)... 2015  UCB, a multinational biopharmaceutical company, and ... in designing, transforming, and running intelligent business operations, ... of their close collaboration in driving transformation that ... services (GBS) finance organization. The Aecus ... work together effectively to embrace the innovative promise ...
(Date:6/30/2015)... , June 30, 2015  NASA astronaut Kjell ... next month on his first mission to the International ... from 8 to 9 a.m. EDT Tuesday, July 7. ... in Star City, Russia . The interviews ... NASA Television highlighting his mission training. To schedule ...
Breaking Biology Technology:Surveyed Rheumatologists Report That Otezla's Oral Administration is its Single Greatest Advantage Over Currently Available Treatment Options 2Surveyed Rheumatologists Report That Otezla's Oral Administration is its Single Greatest Advantage Over Currently Available Treatment Options 3Isagenix Earns Nine American Business Awards 2Isagenix Earns Nine American Business Awards 3UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 2UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 3UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 4UCB and Genpact Receive Aecus Innovation Award for Success in Global Business Services 5NASA Astronaut Preps for First Space Station Mission, Available for Media Interviews 2
... the,following changes to the S&P 500 and S&P MidCap 400 indices:, ... the S&P 500 after the close of trading ... close of trading General Growth Properties had a market ... -- S&P MidCap 400 constituent Cephalon Inc. (Nasdaq: CEPH ) will ...
... presentation,today at the American Heart Association Scientific Sessions ... have presented,data from the Atherosclerosis Risk in Communities ... on chromosome 9p21,detected by the deCODE MI(TM) test ... individual risk of future coronary heart disease,(CHD). This ...
... (Nasdaq: KNDL ) a,leading, global full-service clinical ... Financial Officer Karl "Buzz",Brenkert III will participate in ... will be held at the Arizona Biltmore Resort ... is scheduled for,Friday, Nov. 14 at 10 a.m. ...
Cached Biology Technology:Standard & Poor's Announces Changes to U.S. Indices 2Standard & Poor's Announces Changes to U.S. Indices 3Major Independent Study Underscores Utility of deCODE MI(TM) for Better Predicting Risk of Heart Attack, Informing Statin Therapy 2Major Independent Study Underscores Utility of deCODE MI(TM) for Better Predicting Risk of Heart Attack, Informing Statin Therapy 3Major Independent Study Underscores Utility of deCODE MI(TM) for Better Predicting Risk of Heart Attack, Informing Statin Therapy 4Kendle to Present at the 2008 Credit Suisse Health Care Conference 2
Contains 100 positive controls for effective screening of HDAC inhibitors by fluorometric method....
... structurally and functionally related BMPs, which are ... originally identified as protein regulators of cartilage ... in embryogenesis and morphogenesis of various tissues ... chemotaxis and apoptosis of various cell types, ...
dynactin 4, mRNA (cDNA clone MGC:3248 IMAGE:3505855), complete cds...
RABBIT ANTI HUMAN TRRAP (CT) Immunogen: Recombinant C-terminal kinase-related domain of human TRRAP....
Biology Products: