Chains and heterogens:
PDB Chain Sequences:
>4ptgA (A:) mhsshhhhhhssgenlyfqghmsgrprttsfaesckpvqqpsafgsmkvsrdkdgskvtt vvatpgqgpdrpqevsytdtkvigngsfgvvyqaklcdsgelvaikkvlqdkrfknrelq imrkldhcnivrlryffyssgekkdevylnlvldyvpetvyrvarhysrakqtlpviyvk lymyqlfrslayihsfgichrdikpqnllldpdtavlklcdfgsakqlvrgepnvsyics ryyrapelifgatdytssidvwsagcvlaelllgqpifpgdsgvdqlveiikvlgtptre qiremnpnytefkfpqikahpwtkvfrprtppeaialcsrlleytptarltpleacahsf fdelrdpnvklpngrdtpalfnfttqelssnpplatilipphariqaaastptnataasd antgdrgqtnnaasasasnst
>4ptgA (A:) kvttvvatpgqgpdrpqevsytdtkvigngsfgvvyqaklcdsgelvaikkvlqdkrfkn relqimrkldhcnivrlryffysevylnlvldyvpetvyrvarhysrakqtlpviyvkly myqlfrslayihsfgichrdikpqnllldpdtavlklcdfgsakqlvrgepnvsyicsry yrapelifgatdytssidvwsagcvlaelllgqpifpgdsgvdqlveiikvlgtptreqi remfpqikahpwtkvfrprtppeaialcsrlleytptarltpleacahsffdelrdpnvk lpngrdtpalfnfttqelssnpplatilippha
>4ptgB (B:) mhsshhhhhhssgenlyfqghmsgrprttsfaesckpvqqpsafgsmkvsrdkdgskvtt vvatpgqgpdrpqevsytdtkvigngsfgvvyqaklcdsgelvaikkvlqdkrfknrelq imrkldhcnivrlryffyssgekkdevylnlvldyvpetvyrvarhysrakqtlpviyvk lymyqlfrslayihsfgichrdikpqnllldpdtavlklcdfgsakqlvrgepnvsyics ryyrapelifgatdytssidvwsagcvlaelllgqpifpgdsgvdqlveiikvlgtptre qiremnpnytefkfpqikahpwtkvfrprtppeaialcsrlleytptarltpleacahsf fdelrdpnvklpngrdtpalfnfttqelssnpplatilipphariqaaastptnataasd antgdrgqtnnaasasasnst
>4ptgB (B:) vttvvatpgqgpdrpqevsytdtkvigngsfgvvyqaklcdsgelvaikkvlqdkrfknr elqimrkldhcnivrlryffyssdevylnlvldyvpetvyrvarhysrakqtlpviyvkl ymyqlfrslayihsfgichrdikpqnllldpdtavlklcdfgsakqlvrgepnvsyicsr yyrapelifgatdytssidvwsagcvlaelllgqpifpgdsgvdqlveiikvlgtptreq iremahpwtkvfrprtppeaialcsrlleytptarltpleacahsffdelrdpnvklpng rdtpalfnfttqelssnpplatilipphariq