Diffusion of Integral Membrane Proteins in Protein-Rich Membranes
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F17%3A00479162" target="_blank" >RIV/61388963:_____/17:00479162 - isvavai.cz</a>
Výsledek na webu
<a href="http://dx.doi.org/10.1021/acs.jpclett.7b01758" target="_blank" >http://dx.doi.org/10.1021/acs.jpclett.7b01758</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.jpclett.7b01758" target="_blank" >10.1021/acs.jpclett.7b01758</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Diffusion of Integral Membrane Proteins in Protein-Rich Membranes
Popis výsledku v původním jazyce
The lateral diffusion of embedded proteins along lipid membranes in protein-poor conditions has been successfully described in terms of the Saffman-Delbruck (SD) model, which predicts that the protein diffusion coefficient D is weakly dependent on its radius R as D proportional to ln(1/R). However, instead of being protein-poor, native cell membranes are extremely crowded with proteins. On the basis of extensive molecular simulations, we here demonstrate that protein crowding of the membrane at physiological levels leads to deviations from the SD relation and to the emergence of a stronger Stokes-like dependence D proportional to 1/R. We propose that this 1/R law mainly arises due to geometrical factors: smaller proteins are able to avoid confinement effects much better than their larger counterparts. The results highlight that the lateral dynamics in the crowded setting found in native membranes is radically different from protein-poor conditions and plays a significant role in formation of functional multiprotein complexes.
Název v anglickém jazyce
Diffusion of Integral Membrane Proteins in Protein-Rich Membranes
Popis výsledku anglicky
The lateral diffusion of embedded proteins along lipid membranes in protein-poor conditions has been successfully described in terms of the Saffman-Delbruck (SD) model, which predicts that the protein diffusion coefficient D is weakly dependent on its radius R as D proportional to ln(1/R). However, instead of being protein-poor, native cell membranes are extremely crowded with proteins. On the basis of extensive molecular simulations, we here demonstrate that protein crowding of the membrane at physiological levels leads to deviations from the SD relation and to the emergence of a stronger Stokes-like dependence D proportional to 1/R. We propose that this 1/R law mainly arises due to geometrical factors: smaller proteins are able to avoid confinement effects much better than their larger counterparts. The results highlight that the lateral dynamics in the crowded setting found in native membranes is radically different from protein-poor conditions and plays a significant role in formation of functional multiprotein complexes.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10403 - Physical chemistry
Návaznosti výsledku
Projekt
<a href="/cs/project/GBP208%2F12%2FG016" target="_blank" >GBP208/12/G016: Řízení struktury a funkce biomolekul na molekulové úrovni: souhra teorie a experimentu</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2017
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Physical Chemistry Letters
ISSN
1948-7185
e-ISSN
—
Svazek periodika
8
Číslo periodika v rámci svazku
17
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
6
Strana od-do
4308-4313
Kód UT WoS článku
000410600600057
EID výsledku v databázi Scopus
2-s2.0-85029075508