... compilation ª 2008 FEBS 4529On the basis of the above results, the CD spectra in the near-UV and far-UV region were only recorded atpH 2.0 and pH 6.0 (Fig. 7). In the far-UV region(200–260 nm), both ... of the crustaceans or echinodermproteins. Remarkably, ovorubin is the only caroteno- protein stable at pH 12. At this pH, the lysyl and argi-nyl residues are neutralized, usually affecting the quaternary ... nearly the same shape and size. From the Guinier plot forholo-ovorubin and apo-ovorubin (Fig. 1A), it was pos-sible to fit gyration radii of 43.0 ± 0.7 A˚ and 44.0 ± 0.1 A˚, respectively. The...