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Observation of dielectric universalities in albumin, cytochrome C and Shewanella oneidensis MR-1 extracellular matrix

KA. Motovilov, M. Savinov, ES. Zhukova, AA. Pronin, ZV. Gagkaeva, V. Grinenko, KV. Sidoruk, TA. Voeikova, PY. Barzilovich, AK. Grebenko, SV. Lisovskii, VI. Torgashev, P. Bednyakov, J. Pokorný, M. Dressel, BP. Gorshunov,

. 2017 ; 7 (1) : 15731. [pub] 20171116

Language English Country England, Great Britain

Document type Journal Article

Persistent link   https://www.medvik.cz/link/bmc19035527

The electrodynamics of metals is well understood within the Drude conductivity model; properties of insulators and semiconductors are governed by a gap in the electronic states. But there is a great variety of disordered materials that do not fall in these categories and still respond to external field in an amazingly uniform manner. At radiofrequencies delocalized charges yield a frequency-independent conductivity σ 1(ν) whose magnitude exponentially decreases while cooling. With increasing frequency, dispersionless conductivity starts to reveal a power-law dependence σ 1(ν)∝ν s with s < 1 caused by hopping charge carriers. At low temperatures, such Universal Dielectric Response can cross over to another universal regime with nearly constant loss ε″∝σ1/ν = const. The powerful research potential based on such universalities is widely used in condensed matter physics. Here we study the broad-band (1-1012 Hz) dielectric response of Shewanella oneidensis MR-1 extracellular matrix, cytochrome C and serum albumin. Applying concepts of condensed matter physics, we identify transport mechanisms and a number of energy, time, frequency, spatial and temperature scales in these biological objects, which can provide us with deeper insight into the protein dynamics.

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$a Motovilov, K A $u Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia. k.a.motovilov@gmail.com.
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$a Observation of dielectric universalities in albumin, cytochrome C and Shewanella oneidensis MR-1 extracellular matrix / $c KA. Motovilov, M. Savinov, ES. Zhukova, AA. Pronin, ZV. Gagkaeva, V. Grinenko, KV. Sidoruk, TA. Voeikova, PY. Barzilovich, AK. Grebenko, SV. Lisovskii, VI. Torgashev, P. Bednyakov, J. Pokorný, M. Dressel, BP. Gorshunov,
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$a The electrodynamics of metals is well understood within the Drude conductivity model; properties of insulators and semiconductors are governed by a gap in the electronic states. But there is a great variety of disordered materials that do not fall in these categories and still respond to external field in an amazingly uniform manner. At radiofrequencies delocalized charges yield a frequency-independent conductivity σ 1(ν) whose magnitude exponentially decreases while cooling. With increasing frequency, dispersionless conductivity starts to reveal a power-law dependence σ 1(ν)∝ν s with s < 1 caused by hopping charge carriers. At low temperatures, such Universal Dielectric Response can cross over to another universal regime with nearly constant loss ε″∝σ1/ν = const. The powerful research potential based on such universalities is widely used in condensed matter physics. Here we study the broad-band (1-1012 Hz) dielectric response of Shewanella oneidensis MR-1 extracellular matrix, cytochrome C and serum albumin. Applying concepts of condensed matter physics, we identify transport mechanisms and a number of energy, time, frequency, spatial and temperature scales in these biological objects, which can provide us with deeper insight into the protein dynamics.
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$a Savinov, M $u Institute of Physics AS CR, Praha 8, Czech Republic.
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$a Zhukova, E S $u Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia. A.M. Prokhorov General Physics Institute, RAS, Moscow, Russia. 1. Physikalisches Institut, Universität Stuttgart, Stuttgart, Germany.
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$a Pronin, A A $u A.M. Prokhorov General Physics Institute, RAS, Moscow, Russia.
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$a Gagkaeva, Z V $u Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia.
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$a Grinenko, V $u Institute for Metallic Materials, IFW Dresden, Dresden, Germany.
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$a Sidoruk, K V $u Scientific Center of Russian Federation Research Institute for Genetics and Selection of Industrial Microorganisms, Moscow, Russia.
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$a Voeikova, T A $u Scientific Center of Russian Federation Research Institute for Genetics and Selection of Industrial Microorganisms, Moscow, Russia.
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$a Barzilovich, P Yu $u Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia.
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$a Grebenko, A K $u Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia.
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$a Lisovskii, S V $u Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia.
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$a Torgashev, V I $u Southern Federal University, Rostov-on-Don, Russia.
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$a Bednyakov, P $u Institute of Physics AS CR, Praha 8, Czech Republic.
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$a Pokorný, J $u Institute of Physics AS CR, Praha 8, Czech Republic.
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$a Dressel, M $u 1. Physikalisches Institut, Universität Stuttgart, Stuttgart, Germany. Moscow Institute of Physics and Technology, Institutsky lane 9, Dolgoprudny, Moscow, 141701, Russia.
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$a Gorshunov, B P $u Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, Russia. bpgorshunov@gmail.com. A.M. Prokhorov General Physics Institute, RAS, Moscow, Russia. bpgorshunov@gmail.com. 1. Physikalisches Institut, Universität Stuttgart, Stuttgart, Germany. bpgorshunov@gmail.com.
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