>gnl|BMRB|7306.1 bound_R21A_Spc-SH3_domain
MDETGKELVLALYDYQEKSPAEVTMKKGDILTLLNSTNKDWWKVEVNDRQGFVPAAYVKKLD
>gnl|BMRB|7306.2 polyproline_ligand
XAPSYSPPPPP