This paper demonstrates the application of the high sensitivity, low radiation dose imaging method recently presented as phase diverse coherent diffraction imaging, to the study of biological and other weakly scattering samples. The method is applied, using X-ray illumination, to quantitative imaging of the granular precursors of underwater adhesive produced by the marine sandcastle worm, Phragmatopoma californica. We are able to observe the internal structure of the adhesive precursors in a number of states.
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http://dx.doi.org/10.1016/j.ultramic.2011.03.022 | DOI Listing |
Zootaxa
September 2020
El Colegio de la Frontera Sur. Depto. Sistemática y Ecología Acuática. Chetumal, Quintana Roo, México. *Corresponding author..
The genus Phragmatopoma included, until now, only four valid species with distributions in Eastern Pacific and Western Atlantic. Since most taxonomic studies of Phragmatopoma include poor and uninformative descriptions, the aim of this work was to expand previous descriptions of the sabellariids of Phragmatopoma genus from Tropical America. Sabellariids from two Mexican collections, the Reference Collection of El Colegio de la Frontera Sur, Chetumal, and Laboratorio de Sistemática de Invertebrados Marinos (LABSIM), Universidad del Mar, Puerto Ángel, were revised.
View Article and Find Full Text PDFMol Biol Rep
October 2019
Department of Inspection, The Medical Faculty of Qingdao University, Qingdao, 266003, China.
Protein phosphorylation is a widespread modification that and plays a significant role in marine bioadhesion. The phosphorylated proteins of the barnacle Amphibalanus amphitrite can form strong ionic bonds with mineral surfaces to adapt to marine environments. The adhesion protein PC-3 in the sandcastle worm Phragmatopoma californica contains multipleserine phosphorylations.
View Article and Find Full Text PDFAdv Colloid Interface Sci
January 2017
Department of Bioengineering, University of Utah, Salt Lake City, UT 84112, USA.
Sandcastle worms, Phragmatopoma californica (Fewkes), live along the western coast of North America. Individual worms build tubular shells under seawater by gluing together sandgrains and biomineral particles with a multipart, rapid-set, self-initiating adhesive. The glue comprises distinct sets of condensed, oppositely charged polyelectrolytic components-polyphosphates, polysulfates, and polyamines-that are separately granulated and stored at high concentration in distinct cell types.
View Article and Find Full Text PDFBiomacromolecules
May 2013
Department of Bioeningeering, University of Utah, 20 South 2030 East, Room 506C, Salt Lake City, Utah 84112, United States.
Tube-building sabellariid polychaetes have major impacts on the geology and ecology of shorelines worldwide. Sandcastle worms, Phragmatopoma californica (Fewkes), live along the western coast of North America. Individual sabellariid worms build tubular shells by gluing together mineral particles with a multipart polyelectrolytic adhesive.
View Article and Find Full Text PDFAdv Mater
January 2013
Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz, Germany.
Inspired by the amino acid 2-chloro-4,5-dihydroxyphenylalanine (Cl-DOPA), present in the composition of the proteinaceous glue of the sandcastle worm Phragmatopoma californica, a simple strategy is presented to confer antifouling properties to polymer surfaces using (but not releasing) a bioinspired biocide. Cl-Dopamine is used to functionalize polymer materials and hydrogel films easily, to prevent biofilm formation on them.
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