Structure models of P-DUDES domains from human SRPX in dimeric arrangement. Colouring is by MetaMQAP score that reflects predicted model accuracy: blue - high accuracy, red: low accuracy. Putative Cys-P (yellow) and Cys-R (green) residues shown. Models were built using the following templates: 1xvw (top), 2ywi (center), 1we0 (bottom). The latter is a "B-type" dimer, the others are "A-type" dimers.