CCL: search PDB databank by a fragment of amino acid sequence

 Sent to CCL by: "Michael  Shokhen" [shokhen,+,]
 Dear colleagues,
 I have a peptide (10-15 amino acids).
 I would appreciate if anybody could address me to a software tool
 aimed at searching of the PDB databank for proteins containing
 this amino acid fragment.
 Thank you,