>gnl|PDB|1CKA.1 strand_id:A description:C-CRK N-TERMINAL SH3 DOMAIN AEYVRALFDFNGNDEEDLPFKKGDILRIRDKPEEQWWNAEDSEGKRGMIPVPYVEKY >gnl|PDB|1CKA.2 strand_id:B description:C3G PEPTIDE (PRO-PRO-PRO-ALA-LEU-PRO-PRO-LYS-LYS-ARG) PPPALPPKKR