High abrasion resistance with sparse mineralization: copper biomineral in worm jaws - PubMed (original) (raw)

. 2002 Oct 11;298(5592):389-92.

doi: 10.1126/science.1075433.

Affiliations

• PMID: 12376695
• DOI: 10.1126/science.1075433

High abrasion resistance with sparse mineralization: copper biomineral in worm jaws

Helga C Lichtenegger et al. Science. 2002.

Abstract

Biominerals are widely exploited to harden or stiffen tissues in living organisms, with calcium-, silicon-, and iron-based minerals being most common. In notable contrast, the jaws of the marine bloodworm Glycera dibranchiata contain the copper-based biomineral atacamite [Cu2(OH)3Cl]. Polycrystalline fibers are oriented with the outer contour of the jaw. Using nanoindentation, we show that the mineral has a structural role and enhances hardness and stiffness. Despite the low degree of mineralization, bloodworm jaws exhibit an extraordinary resistance to abrasion, significantly exceeding that of vertebrate dentin and approaching that of tooth enamel.

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Comment in

• Biomineralization. At the cutting edge.
  Weiner S, Addadi L. Weiner S, et al. Science. 2002 Oct 11;298(5592):375-6. doi: 10.1126/science.1078093. Science. 2002. PMID: 12376692 No abstract available.
• Atacamite in jaws and printed wiring boards.
  Turbini LJ. Turbini LJ. Science. 2002 Dec 6;298(5600):1892-3. doi: 10.1126/science.298.5600.1892. Science. 2002. PMID: 12474842 No abstract available.
• Comment on "High abrasion resistance with sparse mineralization: copper biomineral in worm jaws".
  Schofield RM, Nesson MH. Schofield RM, et al. Science. 2003 Aug 22;301(5636):1049; author reply 1049. doi: 10.1126/science.1081726. Science. 2003. PMID: 12933994 No abstract available.

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