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Self-organized criticality and color vision: A guide to water–protein landscape evolution

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  • Phillips, J.C.

Abstract

We focus here on the scaling properties of small interspecies differences between red cone opsin transmembrane proteins, using a hydropathic elastic roughening tool previously applied to the rhodopsin rod transmembrane proteins. This tool is based on a non-Euclidean hydropathic metric realistically rooted in the atomic coordinates of 5526 protein segments, which thereby encapsulates universal non-Euclidean long-range differential geometrical features of water films enveloping globular proteins in the Protein Data Bank. Whereas the rhodopsin blue rod water films are smoothest in humans, the red cone opsins’ water films are optimized for smoothness in cats and elephants, consistent with protein species landscapes that evolve differently in different contexts. We also analyze red cone opsins in the chromatophore-containing family of chameleons, snakes, zebrafish and goldfish, where short- and long-range (BLAST and hydropathic) amino acid (aa) correlations are found with values as large as 97%–99%. We use hydropathic aa optimization to estimate the maximum number Nmax of color shades that the human eye can discriminate, and obtain 106

Suggested Citation

  • Phillips, J.C., 2013. "Self-organized criticality and color vision: A guide to water–protein landscape evolution," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 392(3), pages 468-473.
    • Handle: RePEc:eee:phsmap:v:392:y:2013:i:3:p:468-473
    DOI: 10.1016/j.physa.2012.09.024
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    References listed on IDEAS

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    1. Wallace, Matthew L. & Larivière, Vincent & Gingras, Yves, 2009. "Modeling a century of citation distributions," Journal of Informetrics, Elsevier, vol. 3(4), pages 296-303.
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    1. Monteiro, R.L.S. & Fontoura, J.R.A. & Carneiro, T.K.G. & Moret, M.A. & Pereira, H.B.B., 2014. "Evolution based on chromosome affinity from a network perspective," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 403(C), pages 276-283.
    2. Mauro, John C. & Diehl, Brett & Marcellin, Richard F. & Vaughn, Daniel J., 2018. "Workplace accidents and self-organized criticality," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 506(C), pages 284-289.

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