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Utilizing adsorbed ...
Utilizing adsorbed proteoliposomes trapped in a non-ruptured state on SiO2 for amplified detection of membrane proteins
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- Granéli, Annette, 1973 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Rydström, Jan, 1943 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kemi,Department of Chemistry,University of Gothenburg
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- Kasemo, Bengt Herbert, 1942 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Höök, Fredrik, 1966 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- Elsevier BV, 2004
- 2004
- English.
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In: Biosensors & bioelectronics. - : Elsevier BV. - 0956-5663 .- 1873-4235. ; 20:3, s. 498-504
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Abstract
Subject headings
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- The quartz crystal microbalance with dissipation (QCM-D) technique was used to monitor the formation of supported phospholipid bilayers (SPBs) on SiO2 using proteoliposomes with reconstituted proton translocating nicotinamide nucleotide transhydrogenase (TH). Exposure of the surface to such proteoliposomes creates a lipid film composed of a mixture of proteolipid bilayers and adsorbed non-ruptured proteoliposomes, where the fraction of the latter is reduced if the TH-liposomes are pretreated with trypsin to remove the water soluble domains of TH [Langmuir 19 (2003) 842]. In the present work, the latter study is complemented by investigating the influence of trypsin treatment of the mixed adlayer (proteolipid bilayer + non-ruptured proteoliposomes) after adsorption on the surface. This demonstrates how trypsin-cleavage induced rupture of adsorbed TH-liposomes can be utilized to detect the presence of less than 0.04 pmol/cm2 of immobilized TH.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
Keyword
- QCM-D
- SPR
- Lipids
- Supported membranes
- Transmembrane proteins
- QCM-D
Publication and Content Type
- ref (subject category)
- art (subject category)
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