Figure 1

Power spectrum of HOR domain in AC017075.8 computed by using quartic mapping (Eq. 6). (a) Low-frequency section f < 0.01 bp^-1. Equidistant peaks above the background of noise are assigned consecutively by integers 1, 2, 3, ... The fundamental frequency of peak no. 1 is denoted by f₁. Frequencies of the peaks no. 2, 3, ... are denoted by f₂ = 2·f₁, f₃ = 3·f₁, ..., respectively. (b) Medium frequency section up to f = 0.15 bp^-1. Pronounced equidistant peaks above the background of noise are assigned consecutively by integers 1, 2, 3, ... The frequency of monomeric peak no. 1 is the HOR peak at frequency f₁₆ = 16·f₁ from Figure 1a). Frequencies of monomeric peaks no. 2, 3, ... are 2·f₁₆ = 2·16f₁, 3·f₁₆ = 3·16f₁, ..., respectively (in terms of fundamental HOR frequency f₁ from Figure 1a). The noise level is such that the monomeric peaks at frequencies nf₁₆ are clearly seen above the background.