Chains and heterogens:
PDB Chain Sequences:
>1p6fA (A:) qqqtlpkpfiwaephfmvpkekqvticcqgnygaveyqlhfegslfavdrpkpperinkv kfyipdmnsrmagqysciyrvgelwsepsnlldlvvtemydtptlsvhpgpevisgekvt fycrldtatsmflllkegrsshvqrgygkvqaefplgpvttahrgtyrcfgsynnhawsf psepvkllvtgdientslapedptfpadtwgtyllttetglqkdhalwdhtaqnllrmgl af
>1p6fA (A:) tlpkpfiwaephfmvpkekqvticcqgnygaveyqlhfegslfavdrpkpperinkvkfy ipdmnsrmagqysciyrvgelwsepsnlldlvvtemydtptlsvhpgpevisgekvtfyc rldtatsmflllkegrsshvqrgygkvqaefplgpvttahrgtyrcfgsynnhawsfpse pvkllvtg