Navigation Links
Cone of poison: The secret behind the cone snail's venom pump
Date:10/27/2010

Scientists have discovered the secret of how an amazing sea snail injects its venom after shooting a harpoon-like tooth into its prey or some unlucky swimmer at jetliner speeds. The creatures, called cone snails, use a highly specialized structure that instantly pumps the paralyzing venom through the tooth and into its target. Their study appears in ACS' monthly Journal of Proteome Research.

Helena Safavi-Hemami, Anthony Purcell and colleagues note that cone snails live mainly in the shallows of the world's tropical oceans. Prized by sea-shell collectors for their beautiful shells, the snails are up to 9 inches long. Their mouths have a blow-gun-like structure that shoots a barbed dart-like "tooth" at about 400 miles per hour. The tooth injects venom into fish, worms, or other prey. The snails occasionally sting swimmers, causing pain and sometimes death. They can reload the shooter with additional harpoons. The venom is produced in the venom duct, a long tube attached to the harpoon on one end and to the venom bulb in the snail's mouth.

The scientists' analysis of proteins in venom bulbs found high concentrations of arginine kinase, a protein that enables squid and scallops to swim away from danger with extreme speed. Its abundance in the bulb suggests that arginine kinase enables the venom bulb to undergo rapid, repeated contractions to quickly force the venom through the venom duct to the harpoon and into the prey, the scientists say. The scientists also identified specialized muscles in the venom bulb that appear to aid in this process.


'/>"/>

Contact: Michael Bernstein
m_bernstein@acs.org
202-872-6042
American Chemical Society
Source:Eurekalert

Page: 1

Related biology news :

1. Poison: Its whats for dinner
2. Poison: Its whats for dinner
3. The secret life of Irelands smooth-hound sharks
4. Looking for secrets to drug addiction in our blood
5. Neutrons helping ORNL researchers unlock secrets to cheaper ethanol
6. Ancient brew masters tapped antibiotic secrets
7. Secrets of the gecko foot help robot climb
8. Frozen flies may yield secrets for human organ transplants
9. Unlocking the secrets of RNA biology with WIREs
10. The secret of life may be as simple as what happens between the sheets -- mica sheets
11. Scientists unlock secret of rabies transmission in bats
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... CHICAGO , Jan. 9, 2015 Valid S.A. ("Company") ... the market in general the State of Washington,s ... contract for a new enrollment and central issuance system for ... The project planning and development will start ...
(Date:1/22/2015)... , Jan. 13, 2015  Today, FreeWavz ( www.FreeWavz.com ... its crowdfunding campaign on Fundable, https://www.fundable.com/freewavz . ... of production capacity to meet customer demand. ... - http://photos.prnewswire.com/prnh/20150113/168790 Invented ...
(Date:1/22/2015)...  BellBrook Labs, a leader in high throughput screening ... a TR-FRET (time resolved Forster resonance energy transfer) ... high throughput screening assay for glycosyltransferases and other ... sensitive detection of hundreds of human and microbial ...
Breaking Biology News(10 mins):Valid USA Signs Contract For Washington Driver's License Issuance 2FreeWavz Launches on Fundable to Drive Speed-to-Market in 2015 2BellBrook Labs Launches a High Throughput Screening Assay for Glycosyltransferases with TR-FRET Readout 2
... University of Hawaii at Manoa,s School of Ocean Earth ... of Sea Disposal Site Hawaii Number 5 (HI-05), a ... approximately 5 miles south of Pearl Harbor, Oahu, Hawaii. ... sidescan sonar and remotely operated underwater vehicles to locate ...
... in Spanish . Agricultural Research Service ... genetics of a native prairie grass being widely studied for ... switchgrass, published by Christian Tobias, a molecular biologist at the ... colleagues, is expected to speed up the search for genes ...
... the genetics in humans and fish, scientists now believe that ... and shoulders gave humans so much freedom of movement ... evolution of the human brain, according to New York University ... Communications (July 27, 2010.) Scientists had assumed ...
Cached Biology News:University of Hawaii completes 3-year investigation of military munitions sea disposal site 2University of Hawaii completes 3-year investigation of military munitions sea disposal site 3A new tool for improving switchgrass 2
(Date:1/23/2015)... Portal Solutions , a technology consulting firm ... Office 365 and SharePoint platforms , today announces its inclusion ... one of the region’s fastest-growing mid-sized companies based on a ... “To be recognized a second year in a row by ...
(Date:1/22/2015)... 2015 GEA Niro Soavi the leader ... homogenizer, the PandaPLUS 2000, which is ideal for new ... cell disruption . This compact laboratory homogenizer is ... liquid food, food additives and ingredients as well as ...
(Date:1/22/2015)... Johnston, RI (PRWEB) January 22, 2015 ... State , The growing team of brand-neutral, independent consultants, ... CIO Philip Rogers explained that over the years, his ... including , Moroso, Town of Plainfield, as well as ...
(Date:1/22/2015)... Dr. Greg Leyer of UAS Labs recently ... Supplements Pre-Conference seminar on probiotics in San Diego, CA. ... education conference for health care professionals. This year’s pre-conference seminar ... probiotics in health. Dr. Leyer spoke about the emerging topics ...
Breaking Biology Technology:Washington SmartCEO Announces Portal Solutions as 2015 Future 50 Award Winner Second Year in a Row 2Washington SmartCEO Announces Portal Solutions as 2015 Future 50 Award Winner Second Year in a Row 3GEA Niro Soavi Announces the PandaPLUS 2000 Homogenizer for Processing New Applications for Nanoemulsions and Cell Disruption 2Protocol Networks Brings Independent Technology Consulting to the Constitution State 2
... CHICAGO, July 3 Advanced Life Sciences,Holdings, ... company engaged in the,discovery, development and commercialization ... infection, cancer and respiratory diseases, today,announced that ... Index after the,Russell Investment Group reconstituted its ...
... -- Huifeng,Bio-Pharmaceutical Technology, Inc. (OTC Bulletin Board: ... extracts and pharmaceutical raw materials,for use in ... today that its company information will be ... Program, an information distribution,service that enables subscribing ...
... choice of two distinct drugs on ... separate drug-eluting stent platforms, NATICK, Mass., July ... that the U.S. Food and Drug,Administration (FDA) has approved the ... disease. The,PROMUS Stent is a private-labeled XIENCE(TM) V Everolimus-Eluting Coronary,Stent ...
Cached Biology Technology:Advanced Life Sciences Added to Russell Microcap Index 2Advanced Life Sciences Added to Russell Microcap Index 3Huifeng Bio-Pharmaceutical (HFGB) Information to Be Available Through Standard & Poor's Market Access Program 2Boston Scientific Announces FDA Approval for PROMUS(TM) Everolimus-Eluting Coronary Stent System 2Boston Scientific Announces FDA Approval for PROMUS(TM) Everolimus-Eluting Coronary Stent System 3Boston Scientific Announces FDA Approval for PROMUS(TM) Everolimus-Eluting Coronary Stent System 4
... the most complete and professional software for ... and subsets makes it is possible to ... outputs, for example Cy3 and Cy5, standard ... different subsets of genes and/or arrays. Also ...
...
...
... Antiinflammatory, cytostatic and anti-viral agent. Inhibits several ... and tube formation of HUVEC cells. Also reduces ... expression and IL-8 release of endothelial cells. ... 18 H 16 O 8 MolWeight: ...
Biology Products: