Chains and heterogens:
PDB Chain Sequences:
>1ffpA (A:) phsmryfetavsrpgleepryisvgyvdnkefvrfdsdaenpryeprapwmeqegpeywe retqkakgqeqwfrvslrnllgyynqsaggshtlqqmsgcdlgsdwrllrgylqfayegr dyialnedlktwtaadmaaqitrrkweqsgaaehykaylegecvewlhrylkngnatllr tdspkahvthhprskgevtlrcwalgfypaditltwqlngeeltqdmelvetrpagdgtf qkwasvvvplgkeqnytcrvyheglpepltlrw
>1ffpB (B:) miqktpqiqvysrhppengkpnilncyvtqfhpphieiqmlkngkkipkvemsdmsfskd wsfyilahteftptetdtyacrvkhdsmaepktvywdrdm
>1ffpD (D:) phsmryfetavsrpgleepryisvgyvdnkefvrfdsdaenpryeprapwmeqegpeywe retqkakgqeqwfrvslrnllgyynqsaggshtlqqmsgcdlgsdwrllrgylqfayegr dyialnedlktwtaadmaaqitrrkweqsgaaehykaylegecvewlhrylkngnatllr tdspkahvthhprskgevtlrcwalgfypaditltwqlngeeltqdmelvetrpagdgtf qkwasvvvplgkeqnytcrvyheglpepltlrw
>1ffpE (E:) miqktpqiqvysrhppengkpnilncyvtqfhpphieiqmlkngkkipkvemsdmsfskd wsfyilahteftptetdtyacrvkhdsmaepktvywdrdm