Journal of Computer and System Sciences
Molecular Biology of Bacteria and Its Relevance for P Systems
WMC-CdeA '02 Revised Papers from the International Workshop on Membrane Computing
Unexpected Universality Results for Three Classes of P Systems with Symport/Antiport
DNA8 Revised Papers from the 8th International Workshop on DNA Based Computers: DNA Computing
Unexpected universality results for three classes of P systems with symport/antiport
Natural Computing: an international journal
Biological roots and applications of p systems: further suggestions
WMC'06 Proceedings of the 7th international conference on Membrane Computing
Membrane computing: power, efficiency, applications
CiE'05 Proceedings of the First international conference on Computability in Europe: new Computational Paradigms
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This paper presents the structure, organization (hierarchy) and function of cell membrane in bacteria, with special emphasis on: i) the hierarchy of cell membranes in Gram-negative and Gram-positive bacteria, ii) two main criteria for the classification of transport of ions and molecules across cell membrane, iii) two important mechanisms of transport - symport and antiport, and iv) the relevance of these biological realities for working concepts in P systems such as membrane hierarchy and developmental rules. The biological reality not only illustrates some central concepts in P systems but also could give some suggestions for the theoretical development of P systems and their possible implementation.