Picture story. Heads you bind, tails you bind.SH3 domains.
D000595:Amino Acid Sequence; D008958:Models, Molecular; D008969:Molecular Sequence Data; D009842:Oligopeptides / Q000378:metabolism; D011392:Proline; D011485:Protein Binding; D017434:Protein Structure, Tertiary
D009842:Oligopeptides; D011392:Proline