Navigation Links
Insects evolved radically different strategy to smell
Date:4/13/2008

Darwin's tree of life represents the path and estimates the time evolution took to get to the current diversity of life. Now, new findings suggest that this tree, an icon of evolution, may need to be redrawn. In research to be published in the April 13 advance online issue of Nature, researchers at Rockefeller University and the University of Tokyo have joined forces to reveal that insects have adopted a strategy to detect odors that is radically different from those of other organisms -- an unexpected and controversial finding that may dissolve a dominant ideology in the field.

Since 1991, researchers assumed that all vertebrates and invertebrates smell odors by using a complicated biological apparatus much like a Rube Goldberg device. For instance, someone pushing a doorbell would set off a series of elaborate, somewhat wacky, steps that culminate in the rather simple task of opening the door.

In the case of an insect's ability to smell, researchers believed that when molecules wafting in the air travel up the insect's nose, they latch onto a large protein (called a G-protein coupled odorant receptor) on the surface of the cell and set off a chain of similarly elaborate steps to open a molecular gate nearby, signaling the brain that an odor is present.

"It's that way in the nematode, it's that way in mammals, it's that way in every known vertebrate," says study co-author Leslie Vosshall, head of the Laboratory of Neurogenetics and Behavior at Rockefeller University. "So it's actually unreasonable to think that insects use a different strategy to detect odors. But here, we show that insects have gotten rid of all this stuff in the middle and activate the 'gate' directly."

The gate, a doughnut-shaped protein called an ion channel, provides a safe pathway for ions to flow into a cell. When molecules bind to the odor-sensitive ion channel, the protein changes its shape much like a gate or door changes its conformation as it is
'/>"/>

Contact: Thania Benios
tbenios@rockefeller.edu
212-327-7146
Rockefeller University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Tropical insects go the distance to inform rainforest conservation
2. Handbook of small grain insects available now
3. Insects giant leap reconstructed by founder of sociobiology
4. Ants and avalanches: Insects on coffee plants follow widespread natural tendency
5. Birds, bats and insects hold secrets for aerospace engineers
6. Insects take a bigger bite out of plants in a higher CO2 world
7. New molecular clock from LLNL and CDC indicates smallpox evolved earlier than believed
8. Wasp genetics study suggests altruism evolved from maternal behavior
9. UF botanists: Flowering plants evolved very quickly into 5 groups
10. Adaptation to parasites drive African fishes along different evolutionary paths
11. Plants can be used to study how and why people respond differently to drugs
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/25/2014)... healthcare community and remain priority areas that ... the worldwide crisis of obesity and diabetes, ... in diabetes, epidemiology and public health describe ... of diverse intervention programs in this novel ... on "Global Health Perspectives in Prediabetes and ...
(Date:7/25/2014)... is a complex congenital central nervous system disease ... the neural tubes during the embryonic phase. Many ... fecal incontinence and neurocognitive retardation. Such problems decrease ... life. Researchers at Ankara Physical Medicine and Rehabilitation ... performance in children with SB, using the Pediatric ...
(Date:7/25/2014)... Institute for Medical Research have identified the functions ... crucial to triggering the mating process in mice. , ... mouse detect pheromones that indicate when a female is ... if the female mouse is ovulating and ready to ... mating. Stowers, researchers believe mice developed this system through ...
Breaking Biology News(10 mins):What constitutes an effective response to the global 'diabesity' tsunami? 2It takes two to court 2It takes two to court 3
... is uniquely a "dual" sense, in that the brain perceives ... nose rather than the mouth. In the August 18, 2005, ... of chocolate activated different brain regions according to whether the ... or through the nose. , In a joint research effort ...
... cancer melanoma, studying functional tissue rather than cell ... development, according to new research from a Howard ... School of Medicine. , Though multiple genetic alterations ... been able to establish a direct causal link ...
... a small molecule of RNA called microRNA ?a chemical cousin ... protein involved in the early development of heart muscle. , ... Nature, may aid scientists in their understanding of how a ... cell, as well as offer researchers a way to predict ...
Cached Biology News:Nose odors and mouth odors: The brain distinguishes 2Nose odors and mouth odors: The brain distinguishes 3Ibruprofen and other commonly used painkillers for treating inflammation may increase the risk of heart attack 2Ibruprofen and other commonly used painkillers for treating inflammation may increase the risk of heart attack 3MicroRNA tweaks protein that controls early heart development 2MicroRNA tweaks protein that controls early heart development 3
(Date:7/25/2014)... OAKS, Calif. , July 25, 2014 ... Board of Directors today declared a $0.61 per share ... will be paid on Sept. 5, 2014, to all ... on Aug. 14, 2014.  About Amgen ... for patients suffering from serious illnesses by discovering, developing, ...
(Date:7/25/2014)... , July 25, 2014 ... the "Global Metabolomics Market 2014-2018" report ... http://photos.prnewswire.com/prnh/20130307/600769 Metabolomics or Metabonomics is ... Metabolomics has become a new experimental technique that ... the environmental sciences. Metabolites are small molecules that ...
(Date:7/25/2014)... July 25, 2014 The Conferee Networking ... Topics for Conferee Networking. These two-hour sessions provide a ... meet and resolve problems, discuss new techniques, or brainstorm ... to submit a topic for consideration is August 31, ... . The Conferee Networking committee will review the topics, ...
(Date:7/25/2014)... 2014 /PRNewswire-iReach/ -- Xybion Corporation, the leading provider ... operating in highly regulated industries, announced today that ... User Group Conference, Xybion International Exchange, on October ... at the Sheraton Society Hill Hotel.  ... This year,s conference theme is Compliance ...
Breaking Biology Technology:Amgen Announces 2014 Third Quarter Dividend 2Amgen Announces 2014 Third Quarter Dividend 3Global Metabolomics Market 2014-2018: Key Vendors are Agilent, Bio-Rad, Bruker, Human Metabolome and Metabolon 2Pittcon 2015 Announces Call for Topics for Conferee Networking Sessions 2Xybion Announces It Will Host International User Conference in Philadelphia 2Xybion Announces It Will Host International User Conference in Philadelphia 3
... Jan. 24 Cardica, Inc.,(Nasdaq: CRDC ) ... fiscal 2008 second quarter and six months ended ... excellent commercial progress, with over 1,000,C-Port systems shipped ... an expanding,product line designed to enable minimally-invasive cardiac ...
... FRAZER, Pa. and MAISONS-ALFORT, France, Jan. 24 /PRNewswire-FirstCall/,-- ... that the European,Committee for Medicinal Products for Human ... a positive opinion regarding EFFENTORA(TM), the,company,s fentanyl buccal ... EFFENTORA European new drug application for the treatment ...
... DIEGO, Jan. 24 Biomatrica, the biostability company,that ... temperature, has introduced RNAstable(TM) for preserving RNA at ... shipping., Interest in RNA has skyrocketed over ... gene silencer and in gene expression studies. However, ...
Cached Biology Technology:Cardica Announces Fiscal 2008 Second Quarter Financial Results and Business Progress 2Cardica Announces Fiscal 2008 Second Quarter Financial Results and Business Progress 3Cardica Announces Fiscal 2008 Second Quarter Financial Results and Business Progress 4Cardica Announces Fiscal 2008 Second Quarter Financial Results and Business Progress 5Cardica Announces Fiscal 2008 Second Quarter Financial Results and Business Progress 6Cardica Announces Fiscal 2008 Second Quarter Financial Results and Business Progress 7Cephalon's EFFENTORA Receives Positive Opinion from European Regulatory Authorities for the Management of Breakthrough Cancer Pain 2Cephalon's EFFENTORA Receives Positive Opinion from European Regulatory Authorities for the Management of Breakthrough Cancer Pain 3Cephalon's EFFENTORA Receives Positive Opinion from European Regulatory Authorities for the Management of Breakthrough Cancer Pain 4Biomatrica's RNAstable(TM) Stabilizes RNA at Room Temperature 2Biomatrica's RNAstable(TM) Stabilizes RNA at Room Temperature 3
...
Mouse monoclonal [Ley 37D/G6] to LKB1 ( Abpromise for all tested applications). entrezGeneID: 6794 SwissProtID: Q15831...
... phase reagent for Virus ... & unique water insoluble ... detergents and chaotropes; Engineered ... non-envelop viruses while preserving ...
Integrins Sampler Kit 10g each...
Biology Products: