A p system description of the sodium-potassium pump

  • Authors:
  • Daniela Besozzi;Gabriel Ciobanu

  • Affiliations:
  • Dipartimento di Informatica e Comunicazionem, Università degli Studi di Milano, Milano, Italy;Institute of Computer Science, Romanian Academy, Iaşi, Romania

  • Venue:
  • WMC'04 Proceedings of the 5th international conference on Membrane Computing
  • Year:
  • 2004

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Abstract

The sodium-potassium pump is a fundamental transmembrane protein present in all animal cells. The functioning of the pump is described and analyzed in the formal framework of P systems, considered here as tools for modelling a bio-cellular process. New features such as variable membrane labelling, activation conditions for rules, membrane bilayer and specific communication rules are defined, to the aim of providing a more appropriate description of the pump. A Sevilla carpet of the sodium-potassium pump is given, as a starting point to identify the pumps as the processors able to execute the rules of a high-level P system in a maximal parallel and nondeterministic manner, activated and controlled by steady-state concentrations. Some related topics for further research are proposed.