2-Gaussian fit: Grosse-Kunstleve RW, Sauter NK, Adams PD: Newsletter of the IUCr Commission on Crystallographic Computing 2004, 3, 22-31.

Phosphosite-dependent presentation of dual phosphorylated peptides by MHC class I molecules.

0.2 M Ammonium acetate, 0.1 M HEPES (pH 7.5), 25% (w/v) PEG 3,350