Compare the structures of a pair of proteins and perform a sequence scoring (with Blosum50) or find out, if a given protein structure contains an intrinsic rotational symmetry.   	
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			Compare the structure of a protein with more than 10.000 proteins of the ASTRAL40 (version 1.75) database. You may individually select and review sequential and circular permuted similarities.  
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			Analyze the structural similarities of proteins within the ASTRAL40 (version 1.75) database by using our all-against-all database of pairwise protein structure alignments.  
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