Extracellular Proteins Limit the Dispersal of BiogenicNanoparticles
Abstract
High spatial-resolution secondaryion microprobespectrometry, synchrotron radiation Fourier-transform infraredspectroscopy and polyacrylamide gel analysis demonstrate the intimateassociation of proteins with spheroidal aggregates of biogenic zincsulfide nanocrystals, an example of extracellular biomineralization.Experiments involving synthetic ZnS nanoparticles and representativeamino acids indicate a driving role for cysteine in rapid nanoparticleaggregation. These findings suggest that microbially-derivedextracellular proteins can limit dispersal of nanoparticulatemetal-bearing phases, such as the mineral products of bioremediation,that may otherwise be transported away from their source by subsurfacefluid flow.
- Authors:
- Publication Date:
- Research Org.:
- Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US); Advanced Light Source(ALS)
- Sponsoring Org.:
- USDOE Director, Office of Science; National Aeronautics andSpace Administration
- OSTI Identifier:
- 926601
- Report Number(s):
- LBNL-62685
R&D Project: 458121; BnR: KC0204016
- DOE Contract Number:
- DE-AC02-05CH11231; NASA:NNA04CC02A
- Resource Type:
- Journal Article
- Resource Relation:
- Journal Name: Science; Journal Volume: 316; Journal Issue: 5831; Related Information: Journal Publication Date: June 15,2007
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54; 63; Proteins aggregates bacteria metal sulfidenanoparticles
Citation Formats
Moreau, John W., Weber, Peter K., Martin, Michael C., Gilbert,Benjamin, Hutcheon, Ian D., and Banfield, Jillian F. Extracellular Proteins Limit the Dispersal of BiogenicNanoparticles. United States: N. p., 2007.
Web. doi:10.1126/science.1141064.
Moreau, John W., Weber, Peter K., Martin, Michael C., Gilbert,Benjamin, Hutcheon, Ian D., & Banfield, Jillian F. Extracellular Proteins Limit the Dispersal of BiogenicNanoparticles. United States. doi:10.1126/science.1141064.
Moreau, John W., Weber, Peter K., Martin, Michael C., Gilbert,Benjamin, Hutcheon, Ian D., and Banfield, Jillian F. Fri .
"Extracellular Proteins Limit the Dispersal of BiogenicNanoparticles". United States.
doi:10.1126/science.1141064. https://www.osti.gov/servlets/purl/926601.
@article{osti_926601,
title = {Extracellular Proteins Limit the Dispersal of BiogenicNanoparticles},
author = {Moreau, John W. and Weber, Peter K. and Martin, Michael C. and Gilbert,Benjamin and Hutcheon, Ian D. and Banfield, Jillian F.},
abstractNote = {High spatial-resolution secondaryion microprobespectrometry, synchrotron radiation Fourier-transform infraredspectroscopy and polyacrylamide gel analysis demonstrate the intimateassociation of proteins with spheroidal aggregates of biogenic zincsulfide nanocrystals, an example of extracellular biomineralization.Experiments involving synthetic ZnS nanoparticles and representativeamino acids indicate a driving role for cysteine in rapid nanoparticleaggregation. These findings suggest that microbially-derivedextracellular proteins can limit dispersal of nanoparticulatemetal-bearing phases, such as the mineral products of bioremediation,that may otherwise be transported away from their source by subsurfacefluid flow.},
doi = {10.1126/science.1141064},
journal = {Science},
number = 5831,
volume = 316,
place = {United States},
year = {Fri Apr 27 00:00:00 EDT 2007},
month = {Fri Apr 27 00:00:00 EDT 2007}
}
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