look like tyrosines to me! Mark J van Raaij Laboratorio M-4 Dpto de Estructura de Macromoleculas Centro Nacional de Biotecnologia c/Darwin 3, Campus Cantoblanco E-28049 Madrid, Spain tel. (+34) 91 585 4616 http://www.researcherid.com/rid/B-3678-2009
On 24 Nov 2010, at 13:10, Vinson LIANG wrote: > Dear all, > > I'm refining a structure and find some strange triangle density on the oxygen > of Ser and Thr at the C terminus. One picture of the strange density is > attached here. Could anyone please give me some suggestions on what this > could be? > > The buffer used during purification is PBS, Tris and NaCl. And > crystallization condition contains PEG3,350 and Mg(NO3)2. > > Thank you all in advance for any suggestion. > > Best, > > Vinson Liang > > > > <triangle_density.gif>
