Allosteric regulation of phosphofructokinase controls the emergence of glycolytic oscillations in isolated yeast cells

Gustavsson, Anna-Karin, 1986 (författare): Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)

van Niekerk, David D. (författare)

Adiels, Caroline B., 1976 (författare): Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)

Kooi, Bob (författare)

Goksör, Mattias, 1975 (författare): Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)

Snoep, Jacky L. (författare)

(creator_code:org_t)

2014-05-12
2014
Engelska.
Ingår i: The FEBS Journal. - : Wiley. - 1742-464X .- 1742-4658. ; 281:12, s. 2784-2793

Relaterad länk:: https://febs.onlinel...; visa fler...; https://gup.ub.gu.se...; https://doi.org/10.1...; visa färre...

Abstract Ämnesord

Stäng

Oscillations are widely distributed in nature and synchronization of oscillators has been described at the cellular level (e.g. heart cells) and at the population level (e.g. fireflies). Yeast glycolysis is the best known oscillatory system, although it has been studied almost exclusively at the population level (i.e. limited to observations of average behaviour in synchronized cultures). We studied individual yeast cells that were positioned with optical tweezers in a microfluidic chamber to determine the precise conditions for autonomous glycolytic oscillations. Hopf bifurcation points were determined experimentally in individual cells as a function of glucose and cyanide concentrations. The experiments were analyzed in a detailed mathematical model and could be interpreted in terms of an oscillatory manifold in a three-dimensional state-space; crossing the boundaries of the manifold coincides with the onset of oscillations and positioning along the longitudinal axis of the volume sets the period. The oscillatory manifold could be approximated by allosteric control values of phosphofructokinase for ATP and AMP.

NATURVETENSKAP -- Biologi -- Bioinformatik och systembiologi (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Bioinformatics and Systems Biology (hsv//eng)
NATURVETENSKAP -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
NATURAL SCIENCES -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
NATURVETENSKAP -- Fysik (hsv//swe)
NATURAL SCIENCES -- Physical Sciences (hsv//eng)

Av författaren/redakt...: Gustavsson, Anna ...; van Niekerk, Dav ...; Adiels, Caroline ...; Kooi, Bob; Goksör, Mattias, ...; Snoep, Jacky L.

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