Chains and heterogens:
PDB Chain Sequences:
>1fbnA (A:) medikikeifeniyevdlgdglkriatksivkgkkvydekiikigdeeyriwnpnkskla aaiikglkvmpikrdskilylgasagttpshvadiadkgivyaieyaprimrelldacae reniipilgdankpqeyanivekvdviyedvaqpnqaeiliknakwflkkggygmiaika rsidvtkdpkeifkeqkeileaggfkivdevdiepfekdhvmfvgiwegk