... fix. delete sequence.pdb_files on pdb_unload. however memory leak remains . ... 19 * self.project -- project object, which the block belongs to . ... 22 * self.positions -- sorted list of positions of the project.alignment that . ... 34 def __init__ ( self , project , sequences = None , positions = None ): . ... 44 self . ... 75 If more than one pdb chain for some sequence provided, consider all of them . ... 132 def ca_atoms ( self , sequence , pdb_chain ): . ... 136 def sequences_chains ( self ): ...