dorsal/arxiv
View SchemaStatistically enhanced self-attraction of random patterns
| Authors | D. B. Lukatsky, K. B. Zeldovich, E. I. Shakhnovich |
|---|---|
| Categories | |
| ArXiv ID | q-bio/0607050 |
| URL | https://arxiv.org/abs/q-bio/0607050 |
| DOI | 10.1103/PhysRevLett.97.178101 |
Abstract
In this work we develop a theory of interaction of randomly patterned surfaces as a generic prototype model of protein-protein interactions. The theory predicts that pairs of randomly superimposed identical (homodimeric) random patterns have always twice as large magnitude of the energy fluctuations with respect to their mutual orientation, as compared with pairs of different (heterodimeric) random patterns. The amplitude of the energy fluctuations is proportional to the square of the average pattern density, to the square of the amplitude of the potential and its characteristic length, and scales linearly with the area of surfaces. The greater dispersion of interaction energies in the ensemble of homodimers implies that strongly attractive complexes of random surfaces are much more likely to be homodimers, rather than heterodimers. Our findings suggest a plausible physical reason for the anomalously high fraction of homodimers observed in real protein interaction networks.
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"abstract": "In this work we develop a theory of interaction of randomly patterned\nsurfaces as a generic prototype model of protein-protein interactions. The\ntheory predicts that pairs of randomly superimposed identical (homodimeric)\nrandom patterns have always twice as large magnitude of the energy fluctuations\nwith respect to their mutual orientation, as compared with pairs of different\n(heterodimeric) random patterns. The amplitude of the energy fluctuations is\nproportional to the square of the average pattern density, to the square of the\namplitude of the potential and its characteristic length, and scales linearly\nwith the area of surfaces. The greater dispersion of interaction energies in\nthe ensemble of homodimers implies that strongly attractive complexes of random\nsurfaces are much more likely to be homodimers, rather than heterodimers. Our\nfindings suggest a plausible physical reason for the anomalously high fraction\nof homodimers observed in real protein interaction networks.",
"arxiv_id": "q-bio/0607050",
"authors": [
"D. B. Lukatsky",
"K. B. Zeldovich",
"E. I. Shakhnovich"
],
"categories": [
"q-bio.BM"
],
"doi": "10.1103/PhysRevLett.97.178101",
"title": "Statistically enhanced self-attraction of random patterns",
"url": "https://arxiv.org/abs/q-bio/0607050"
},
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