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:4/14/2016)... , April 14, 2016 ... and Malware Detection, today announced the appointment of ... the new role. Goldwerger,s leadership appointment comes ... the heels of the deployment of its platform at ... behavioral biometric technology, which discerns unique cognitive and physiological ...
(Date:3/31/2016)... 31, 2016  Genomics firm Nabsys has completed a ... Barrett Bready , M.D., who returned to the company ... technical leadership team, including Chief Technology Officer, John ... Steve Nurnberg and Vice President of Software and Informatics, ... Dr. Bready served as CEO of Nabsys ...
(Date:3/22/2016)... India , March 22, 2016 /PRNewswire/ ... market research report "Electronic Sensors Market for Consumer ... Proximity, & Others), Application (Communication & IT, ... Geography - Global Forecast to 2022", published ... industry is expected to reach USD 26.76 ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... A person commits a crime, and the detective ... the criminal down. An outbreak of foodborne illness ... (FDA) uses DNA evidence to track down the bacteria that ... It,s not. The FDA has increasingly used a complex, cutting-edge ... illnesses. Put as simply as possible, whole genome sequencing is ...
(Date:6/23/2016)... 23, 2016  The Biodesign Challenge (BDC), a university ... to harness living systems and biotechnology, announced its winning ... New York City . ... showcased projects at MoMA,s Celeste Bartos Theater during the ... MoMA,s senior curator of architecture and design, and ...
(Date:6/23/2016)... ... June 23, 2016 , ... In a new case report ... detail how a patient who developed lymphedema after being treated for breast cancer benefitted ... change the paradigm for dealing with this debilitating, frequent side effect of cancer treatment. ...
(Date:6/23/2016)... 2016 On Wednesday, June 22, 2016, ... 0.22%; the Dow Jones Industrial Average edged 0.27% lower to ... down 0.17%. Stock-Callers.com has initiated coverage on the following equities: ... (NASDAQ: NKTR ), Aralez Pharmaceuticals Inc. (NASDAQ: ... BIND ). Learn more about these stocks by accessing their ...
Breaking Biology Technology: