HOME >> BIOLOGY >> NEWS
Bloodworm's way with copper likely provides paradigm for new materials

ng things that have died."

The researchers found that the bloodworm's unmineralized copper as well as the copper biomineral is concentrated in the first half millimeter of the jaw. They discovered that the copper biomineral is organized in nanostructured fibers (about 50 nanometers in diameter) within a protein matrix, and that the "fiber orientation within the tip is roughly parallel to its outer shape," according to the paper entitled "High Abrasion Resistance With Sparse Mineralization: Copper Biomineral in Worm Jaws."

Through a complex procedure called "nanoindentation" (performed by the paper's author Thomas Schberl of the Erich Schmid Institute for Materials Science, Leoben, Austria), the researchers mapped hardness (H) and stiffness (E) with composition in the bloodworm jaw. They then determined that both hardness and stiffness increased with increasing mineral content.

"The question as to why the bloodworm selects copper for its jaws is very puzzling; most other organisms mineralize with calcium phosphate/calcium carbonate," said Waite. "And in all those other calcium-based biting, chewing, fighting structures, the mineral to protein ratio is more like 10 to 1. That's true for enamel (the biting surface of teeth) and for the tips of serpent fangs. Most other organisms make bioceramics in which a "gossamer" protein scaffold is mineralized with ordered arrays of inorganic components with certain geometries such that the combination provides for wear resistance. But this worm turns that paradigm on its head. It makes a structure that is 10 parts protein and one part mineral and exploits that structure for wear resistance. If you want to make something hard, how do you do it with a preponderance of protein? We think the worm does it by adding copper!"

UCSB Materials Professor Frank Zok helped to clarify the cleverness of that strategy exhibited by the bloodworm by suggesting a more mathematically complex understanding of
'"/>

Contact: Jacquelyn Savani
jsavani@engineering.ucsb.edu
805-893-4301
University of California, Santa Barbara - Engineering
10-Oct-2002


Page: 1 2 3 4 5 6

Related biology news :

1. Bacteria use molecular lasso to cop copper
2. OHSU-led research examines role of copper, iron in diseases
3. Scientists uncover early warning system for copper toxicity
4. Complex cells likely arose from combination of bacterial and extreme-microbe genomes
5. Goals unlikely to protect Gulf of Mexico shrimp industry
6. Manatee population rising in some regions, likely stalled or declining in others
7. Natures ambush: pregnancy more likely from single unprotected intercourse than believed
8. First study of resveratrol dietary supplement finds effect on breast and prostate cancers unlikely
9. Mix of chemicals plus stress damages brain, liver in animals and likely in humans
10. Reward mechanism involved in addiction likely regulates pair bonds between monogamous animals
11. Children with HIV more likely to utilize health services than infected adults

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/21/2020)... ... 2020 , ... Sentien Biotechnologies, Inc., a clinical-stage biotechnology company ... Drug Administration (FDA) has approved the company’s Investigational New Drug (IND) application for ... Approval of this IND allows Sentien to initiate a Phase 1/2 study with ...
(Date:8/12/2020)... Mich. (PRWEB) , ... August 11, 2020 , ... ... R&D subsidiary based in Princeton, NJ, have entered into license agreements with Housey ... and development. Both Roche and J&J have annual Research and Development spending ...
(Date:8/5/2020)... ... 05, 2020 , ... Regenative Labs has received approval from the Centers for ... them the first Wharton’s jelly allografts to be assigned a Q code and be ... the first Wharton’s jelly allograft product to be recognized as a 361 HCT/P by ...
Breaking Biology News(10 mins):
(Date:7/10/2020)... ... 2020 , ... Bode Technology, a leading provider ... through its COVID-19 testing service, Bode-CARES . Bode-CARES combines high-volume clinical testing ... provides a turnkey solution that includes a comprehensive collection and virus-management program for ...
(Date:7/10/2020)... ... July 09, 2020 , ... Sentien Biotechnologies, ... the hiring of Allen R. Nissenson, M.D., F.A.C.P., as its Chief Medical Officer. ... of Sentien’s lead product, SBI-101. Dr. Nissenson serves as an Emeritus Professor ...
(Date:7/1/2020)... (PRWEB) , ... June 29, 2020 , ... ... year to date growth of 40% in 2020, despite many obstacles created as ... MedShift aims to increase revenue for its partnered medical practices and medical manufacturers ...
(Date:6/28/2020)... ... 2020 , ... The Indoor Lab, a leading provider of sensor solutions for ... types to ensure cleanliness, distancing and occupancy with its patent pending WipeAway™ technology using ... will provide a health performance index system that scores all aspects of compliance similar ...
Breaking Biology Technology:
Cached News: