Team:BIOTEC Dresden/Notebook SilverNano

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=== Silver Nano Particles ===
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=== Metallization of a protein with silver ===
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'''Strategy'''
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Unique peptides have been found capable of nucleating metal atoms, spurred by an interest in biomineralization by the prospect of nanoscale building [1]. We use a twelve amino-acid long silver binding peptide that has been identified by combinatorial screening [2,3] to nucleate silver nanoparticles. The peptide is tagged with GFP so that it can be monitored along the flow chamber. Several protocols to bio-synthesize silver nanoparticles were tried in parallel, and absorbance of various samples were measured using spectrophotometry.
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Unique peptides have been found capable of nucleating metal atoms, spurred by an interest in biomineralization by the prospect of nanoscale building [1]. We use a twelve amino-acid long silver binding peptide (AG4)that has been identified by phage display [2,3] to nucleate silver nanoparticle formation. We conducted experiments to assess the formation of silver nanoparticles due to AG4 nucleation. We further characterized the created silver nanoparticles by spectrophotometry and scanning electron microscopy. After confirming Ag-nanoparticle formation by AG4-nucleation we designed a DNA-constuct consisting of GFP tagged with AG4. Next we plan to express this fusion protein in-vitro perform the Ag-nanoparticle nucleation and do a colocalisation experiment for GFP and the nanoparticles. spectrophotometry.
'''[[Team:BIOTEC_Dresden/Methods_SilverNano|Methods]]'''
'''[[Team:BIOTEC_Dresden/Methods_SilverNano|Methods]]'''
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Here the basic ideas are introduced.
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Here an overview of the used protocols is given.
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'''[[Team:BIOTEC_Dresden/Results_SilverNano|Results]]'''
'''[[Team:BIOTEC_Dresden/Results_SilverNano|Results]]'''
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Lab notes and obtained results.
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Electron Microscopy images and absorbance spectra of incubated silver binding peptide Ag4. The creation of silver nanoparticles is confirmed.
== ==
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[1] Lee, S., et al., ''Science'', 296, 892-895 <br>
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[1] Lee, S., et al., ''Science'', 296, 892-895, 2002 <br>
[2] Naik, R., et al., ''Nat. Materials'', 1, 169-172, 2002 <br>
[2] Naik, R., et al., ''Nat. Materials'', 1, 169-172, 2002 <br>
[3] Naik, R., et al., ''Nanobiophot. Biomed. Appl.'', 5331, 1605-7422, 2004
[3] Naik, R., et al., ''Nanobiophot. Biomed. Appl.'', 5331, 1605-7422, 2004

Latest revision as of 03:39, 22 October 2009

Metallization of a protein with silver

Unique peptides have been found capable of nucleating metal atoms, spurred by an interest in biomineralization by the prospect of nanoscale building [1]. We use a twelve amino-acid long silver binding peptide (AG4)that has been identified by phage display [2,3] to nucleate silver nanoparticle formation. We conducted experiments to assess the formation of silver nanoparticles due to AG4 nucleation. We further characterized the created silver nanoparticles by spectrophotometry and scanning electron microscopy. After confirming Ag-nanoparticle formation by AG4-nucleation we designed a DNA-constuct consisting of GFP tagged with AG4. Next we plan to express this fusion protein in-vitro perform the Ag-nanoparticle nucleation and do a colocalisation experiment for GFP and the nanoparticles. spectrophotometry.


Methods

Here an overview of the used protocols is given.


Results

Electron Microscopy images and absorbance spectra of incubated silver binding peptide Ag4. The creation of silver nanoparticles is confirmed.

[1] Lee, S., et al., Science, 296, 892-895, 2002
[2] Naik, R., et al., Nat. Materials, 1, 169-172, 2002
[3] Naik, R., et al., Nanobiophot. Biomed. Appl., 5331, 1605-7422, 2004


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