Peer-Reviewed Journal Details
Mandatory Fields
Jonker, JL,Morrison, L,Lynch, EP,Grunwald, I,von Byern, J,Power, AM
2015
February
Interface Focus
The chemistry of stalked barnacle adhesive (Lepas anatifera)
Published
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Optional Fields
bioadhesive cross-linking barnacle protein spectroscopy BALANUS-AMPHITRITE MUSSEL ADHESIVE BIOCHEMICAL COMPOSITION RAMAN-SPECTROSCOPY PHRAGMATOPOMA-CALIFORNICA BIOLOGICAL TISSUES CEMENT PROTEINS CROSS-LINKING ATR-FTIR MECHANISMS
5
1
20140062
The results of the first chemical analysis of the adhesive of Lepas anatifera, a stalked barnacle, are presented. A variety of elements were identified in scanning electron microscopy with energy dispersive spectrometry (SEM-EDS) of the adhesive, including Na, Mg, Ca, Cl, S, Al, Si, K and Fe; however, protein-metal interactions were not detected in Raman spectra of the adhesive. Elemental signatures from SEM-EDS of L. anatifera adhesive glands were less varied. Phosphorous was mostly absent in adhesive samples; supporting previous studies showing that phosphoserines do not play a significant role in adult barnacle adhesion. Disulfide bridges arising from Cys dimers were also investigated; Raman analysis showed weak evidence for S-S bonds in L. anatifera. In addition, there was no calcium carbonate signal in the attenuated total reflectance Fourier transform infrared spectra of L. anatifera adhesive, unlike several previous studies in other barnacle species. Significant differences were observed between the Raman spectra of L. anatifera and Balanus crenatus; these and a range of Raman peaks in the L. anatifera adhesive are discussed. Polysaccharide was detected in L. anatifera adhesive but the significance of this awaits further experiments. The results demonstrate some of the diversity within barnacle species in the chemistry of their adhesives.
10.1098/rsfs.2014.0062
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