On Communication in Tissue P Systems: Conditional Uniport

نویسندگان

  • Sergey Verlan
  • Francesco Bernardini
  • Marian Gheorghe
  • Maurice Margenstern
چکیده

The paper introduces (purely communicative) tissue P systems with conditional uniport. Conditional uniport means that every application of a communication rule moves one object in a certain direction by possibly using another one as an activator which is left untouched in the place where it is. Tissue P systems with conditional uniport are shown to be computationally complete in the sense that they can recognise all recursively enumerable sets of natural numbers. This is achieved by simulating deterministic register machines.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Computational Completeness of Tissue P Systems with Conditional Uniport

The paper introduces (purely communicative) tissue P systems with conditional uniport. Conditional uniport means that rules move only one object at a time, but this may be with the help of another one acting as an activator which is left untouched in the place where it is. Tissue P systems with conditional uniport are shown to be computationally complete in the sense that they can recognize all...

متن کامل

Generalized communicating P systems

This paper considers a generalization of various communication models based on the P system paradigm where two objects synchronously move across components. More precisely, the model uses blocks of four cells such that pairs of objects from two input cells travel together to target output cells. It is shown that the model introduced, based on interactions between blocks, is complete, being able...

متن کامل

The mitochondrial inner membrane anion channel. Regulation by divalent cations and protons.

It is now well established that incubation of mitochondria at pH 8 or higher opens up an electrophoretic anion transport pathway in the inner membrane. It is not known, however, whether this transport process has any physiological relevance. In this communication we demonstrate that anion uniport can take place at physiological pH if the mitochondria are depleted of matrix divalent cations with...

متن کامل

A structure-activity study of fatty acid interaction with mitochondrial uncoupling protein.

Fatty acid (FA) uniport via mitochondrial uncoupling protein (UcP) was detected fluorometrically with PBFI, potassium-binding benzofuran phthalate and SPQ, 6-methoxy-N-(3-sulfopropyl)-quinolinium, indicating K+ and H+, respectively. The FA structural patterns required for FA flip-flop, UcP-mediated FA uniport, activation of UcP-mediated H+ transport in proteoliposomes, and inhibition of UcP-med...

متن کامل

Acute toxicity of triorganotin compounds: different specific effects on the energy metabolism and role of pH.

Triorganotin compounds exhibit several modes of toxic action on the energy metabolism in energy-transducing membranes. The inhibition of the adenosine triphosphate (ATP) synthase and the hydroxide/chloride-antiport have been extensively investigated, but debate still exists on whether further mechanisms are relevant. In this work, two possible further effects have been investigated: inhibition ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006