Dielectric constant of flagellin proteins measured by scanning dielectric microscopy
Source abstract
Abstract
The dielectric constant of flagellin proteins in flagellar bacterial filaments ∼10-20 nm in diameter is measured using scanning dielectric microscopy. We obtained for two different bacterial species (Shewanella oneidensis MR-1 and Pseudomonas aeruginosa PAO1) similar relative dielectric constant values εSo = 4.3 ± 0.6 and εPa = 4.5 ± 0.7, respectively, despite their different structure and amino acid sequence. The present results show the applicability of scanning dielectric microscopy to nanoscale filamentous protein complexes and to general 3D macromolecular protein geometries, thus opening new avenues to study the relationship between the dielectric response and protein structure and function.
Source: openalex_inverted_index · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nanopore and Nanochannel Transport Studies · Lipid Membrane Structure and Behavior · Microfluidic and Bio-sensing Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Nanoscale Bioelectrical Characterization
Institute for Bioengineering of Catalonia (IBEC)
The Barcelona Institute of Science and Technology (BIST)
Barcelona
Spain
Bacterial Infections: Antimicrobial Therapies
School of Physics and Astronomy
University of Manchester
Manchester M13 9PL
UK
National Graphene Institute
Funding
Agencia Estatal de Investigación · European Regional Development Fund · Institució Catalana de Recerca i Estudis Avançats · Generalitat de Catalunya
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