| Literature DB >> 20052474 |
Yongfeng Li1, Jeyaraman Srividhya.
Abstract
A modified Goldbeter-Koshland (GK) type model is proposed to study the open signaling cascade with forward activation. Three different regimes related to the ultrasensitivity are clearly defined. When the cascade is sufficiently long, the steady states in the downstream cycles exhibit a limiting behavior. Meanwhile, a temporal switch-like behavior is revealed in the pre-ultrasensitivity regime without any feedback circuitry. A detailed analysis of this phenomenon is provided.Mesh:
Year: 2010 PMID: 20052474 DOI: 10.1007/s00285-009-0322-3
Source DB: PubMed Journal: J Math Biol ISSN: 0303-6812 Impact factor: 2.259