Predicted 3D structure of the TRAPPII ASH domain. (A) Known structure of a Hydin ASH domain (PDB (http://www.pdb.org) entry 2E6J). (B) Model of the TRAPPC9 ASH structure constructed using Modeller (http://toolkit.tuebingen.mpg.de/modeller) based on the structure of the OCRL1 ASH domain (PDB (http://www.pdb.org) entry 3QBT). (C) The solved structure of the bacterial PapD protein is shown for comparison (PDB (http://www.pdb.org) entry 2WMP). (D) The OCRL1 ASH structural coordinates were obtained at PDB.org (3QBT).