Find PDB structures and Computed Structure Models (CSM) by combining queries from tools in this suite: Attribute Search, Sequence Similarity, Sequence Motif, 3D Similarity, and 3D Motif with 'AND' logic.
Warnings about residues that 'are not properly linked' and 'missing atoms' occur where there are non-natural residues and reversals in the chain directions, and there are no real problems with these stretches.