Cited by 28Bioinformatics and Genomic NetworksComplex Network Analysis TechniquesGene Regulatory Network Analysis

Networks of Networks: An Essay on Multi-Level Biological Organization

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Uversky, Vladimir N., Giuliani, Alessandro·2021·Frontiers in Genetics

Abstract

The multi-level organization of nature is self-evident: proteins do interact among them to give rise to an organized metabolism, while in the same time each protein (a single node of such interaction network) is itself a network of interacting amino-acid residues allowing coordinated motion of the macromolecule and systemic effect as allosteric behavior. Similar pictures can be drawn for structure and function of cells, organs, tissues, and ecological systems. The majority of biologists are used to think that causally relevant events originate from the lower level (the molecular one) in the form of perturbations, that “climb up” the hierarchy reaching the ultimate layer of macroscopic behavior (e.g., causing a specific disease). Such causative model, stemming from the usual genotype-phenotype distinction, is not the only one. As a matter of fact, one can observe top-down, bottom-up, as well as middle-out perturbation/control trajectories. The recent complex network studies allow to go further the pure qualitative observation of the existence of both non-linear and non-bottom-up processes and to uncover the deep nature of multi-level organization. Here, taking as paradigm protein structural and interaction networks, we review some of the most relevant results dealing with between networks communication shedding light on the basic principles of complex system control and dynamics and offering a more realistic frame of causation in biology.

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Crossref · 10.3389/fgene.2021.706260

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  • The cellular signaling is organized in a nesting doll-like organization, a complex network of networks, with even a single node in a protein-protein interaction network representing a multileveled network itself.

    “The problem is further complicated by the nesting doll (Matryoshka)-like organization of the cellular signaling, which represents a complex network of networks, with even a single node in a protein–protein interaction network representing a multileveled network itself [54].”

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Authors
Uversky, V. N., & Giuliani, A.
Affiliations
  • University of South Florida (US)
  • Istituto Superiore di Sanità (IT)
Corresponding author
  • Uversky, Vladimir N.
  • Giuliani, Alessandro
Venue
Frontiers in Genetics
Published
2021-06-21
Volume
12
Pages
706260-706260
ISSN
1664-8021 (ISSN-L)
OpenAlex
W3175706715
Cited by
28
References
131
Citations by year
2026: 3 · 2025: 3 · 2024: 7 · 2023: 3 · 2022: 11 · 2021: 1
FWCI
0.58
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Genetics (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Digital Commons - University of South Florida (University of South Florida) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bioinformatics and Genomic Networks
  • Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Complex Network Analysis Techniques
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene Regulatory Network Analysis
Keywords
protein-protein interaction network, allosteric communication, complex systems dynamics, biological causation

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