Minimal model of transcriptional elongation processes with pauses
Abstrak
Fundamental biological processes such as transcription and translation, where a genetic sequence is sequentially read by a macromolecule, have been well described by a classical model of non-equilibrium statistical physics, the totally asymmetric exclusion principle (TASEP). This model describes particles hopping between sites of a one-dimensional lattice, with the particle current determining the transcription or translation rate. An open problem is how to analyze a TASEP where particles can pause randomly, as has been observed during transcription. In this work, we report that surprisingly, a simple mean-field model predicts well the particle current for all values of the average pause duration, using a simple description of blocking behind paused particles.
Penulis (5)
Jingkui Wang
Benjamin Pfeuty
Quentin Thommen
Carmen Romano
Marc Lefranc
Akses Cepat
- Tahun Terbit
- 2014
- Bahasa
- en
- Sumber Database
- arXiv
- Akses
- Open Access ✓