Chains and heterogens:
PDB Chain Sequences:
>1kskA (A:) gshmrldkfiaqqlgvsraiagreirgnrvtvdgeivrnaafkllpehdvaydgnplaqq hgpryfmlnkpqgyvcstddpdhptvlyfldepvawklhaagrldidttglvlmtddgqw shritsprhhcektylvtlespvaddtaeqfakgvqlhnekdltkpavlevitptqvrlt isegryhqvkrmfaavgnhvvelhreriggitldadlapgeyrplteeeiasvv