  I discuss the digital disorder introduced by Rosu and Canessa [Phys. Rev. E
47, R3818 (1993)] in the Davydov model of energy diffusion along \alpha-helix
protein chains. The digitally disordered Davydov beta kinks display
self-organized features, i.e., power law correlations both in time and space,
that may be attributed to incipient dynamic structural changes of the protein
chain as a consequence of coarse-graining the fluctuations due to microscopic
degrees of freedom. In this paper, I provide a simple semiconductor model for
the flicker noise and also comment on the multifractality that one may
associate with the protein chains by means of digital disorder
