RNA-interference & register machines (extended abstract)

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Abstract

RNA interference (RNAi) is a mechanism whereby small RNAs (siRNAs) directly control gene expression without assistance from proteins. This mechanism consists of interactions between RNAs and small RNAs both of which may be single or double stranded. The target of the mechanism is mRNA to be degraded or aberrated, while the initiator is double stranded RNA (dsRNA) to be cleaved into siRNAs. Observing the digital nature of RNAi, we represent RNAi as a Minsky register machine such that (i) The two registers hold single and double stranded RNAs respectively, and (ii) Machine's instructions are interpreted by interactions of enzyme (Dicer), siRNA (with RISC complex) and polymerization (RdRp) to the appropriate registers. Interpreting RNAi as a computational structure, we can investigate the computational meaning of RNAi, especially its complexity. Initially, the machine is configured as a Chemical Ground Form (CGF), which generates incorrect jumps. To remedy this problem, the system is remodeled as recursive RNAi, in which siRNA targets not only mRNA but also the machine instructional analogues of Dicer and RISC. Finally, probabilistic termination is investigated in the recursive RNAi system.

Original languageEnglish
Pages (from-to)107-112
Number of pages6
JournalElectronic Proceedings in Theoretical Computer Science, EPTCS
Volume100
DOIs
Publication statusPublished - 2012 Nov 15
Event6th Workshop on Membrane Computing and Biologically Inspired Process Calculi, MeCBIC 2012 - Newcastle upon Tyne, United Kingdom
Duration: 2012 Sept 8 → …

All Science Journal Classification (ASJC) codes

  • Software

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