>gnl|PDB|1CKB.1 strand_id:A description:C-CRK N-TERMINAL SH3 DOMAIN
AEYVRALFDFNGNDEEDLPFKKGDILRIRDKPEEQWWNAEDSEGKRGMIPVPYVEKY
>gnl|PDB|1CKB.2 strand_id:B description:SOS PEPTIDE (PRO-PRO-PRO-VAL-PRO-PRO-ARG-ARG-ARG-ARG)
PPPVPPRRRR