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A domain-oriented approach to the reduction of combinatorial complexity in signal transduction networks.
Conzelmann, Holger; Saez-Rodriguez, Julio; Sauter, Thomas et al.
2006In BMC Bioinformatics, 7, p. 34
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Keywords :
Binding Sites; Combinatorial Chemistry Techniques; Computer Simulation; Models, Biological; Models, Chemical; Protein Binding; Protein Interaction Mapping/methods; Receptors, Cell Surface/chemistry/metabolism; Signal Transduction/physiology; Structure-Activity Relationship
Abstract :
[en] BACKGROUND: Receptors and scaffold proteins possess a number of distinct domains and bind multiple partners. A common problem in modeling signaling systems arises from a combinatorial explosion of different states generated by feasible molecular species. The number of possible species grows exponentially with the number of different docking sites and can easily reach several millions. Models accounting for this combinatorial variety become impractical for many applications. RESULTS: Our results show that under realistic assumptions on domain interactions, the dynamics of signaling pathways can be exactly described by reduced, hierarchically structured models. The method presented here provides a rigorous way to model a large class of signaling networks using macro-states (macroscopic quantities such as the levels of occupancy of the binding domains) instead of micro-states (concentrations of individual species). The method is described using generic multidomain proteins and is applied to the molecule LAT. CONCLUSION: The presented method is a systematic and powerful tool to derive reduced model structures describing the dynamics of multiprotein complex formation accurately.
Disciplines :
Life sciences: Multidisciplinary, general & others
Author, co-author :
Conzelmann, Holger
Saez-Rodriguez, Julio
Sauter, Thomas ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Life Science Research Unit
Kholodenko, Boris N.
Gilles, Ernst D.
Language :
English
Title :
A domain-oriented approach to the reduction of combinatorial complexity in signal transduction networks.
Publication date :
2006
Journal title :
BMC Bioinformatics
ISSN :
1471-2105
Publisher :
BioMed Central, United Kingdom
Volume :
7
Pages :
34
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 26 April 2013

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