Changes and additions from ASTRAL 1.65 to 1.67: * SPACI and AEROSPACI scores SPACI and AEROSPACI scores are now calculated using Linux versions of PROCHECK (v.3.5.4) and WHAT_CHECK (20030601-1154). These produce scores slightly different from the older SGI versions of the programs, and also different from the WHAT_CHECK reports available online. We re-calculated SPACI scores for all PDB files in ASTRAL 1.67, including entries that were present in older versions. Therefore, SPACI and AEROSPACI scores have changed slightly for many older proteins. * ASTEROIDS Pfam release 16 was used to create ASTEROIDS in ASTRAL 1.67. * PDB Chain Sequences At the request of our users, we now generate PDB chain sequences based on ATOM as well as SEQRES records. These may be found on the "other sequences" page. We did not generate selected subsets based on this file.