Chains and heterogens:
PDB Chain Sequences:
>3i4bA (A:) ttsfaesckpvqqpsafgsmkvsrdkdgskvttvvatpgqgpdrpqevsytdtkvigngs fgvvyqaklcdsgelvaikkvlqdkrfknrelqimrkldhcnivrlryffyssgekkdev ylnlvldyvpetvyrvarhysrakqtlpviyvklymyqlfrslayihsfgichrdikpqn llldpdtavlklcdfgsakqlvrgepnvsyicsryyrapelifgatdytssidvwsagcv laelllgqpifpgdsgvdqlveiikvlgtptreqiremnpnytefkfpqikahpwtkvfr prtppeaialcsrlleytptarltpleacahsffdelrdpnvklpngrdtpalfnfttqe lssnpplatilipphariqaaastptnataasdantgdrgqtnnaasasasnst
>3i4bA (A:) smkvsrdgskvttvvatpgqgpdrpqevsytdtkvigngsfgvvyqaklcdsgelvaikk vlqdkrfknrelqimrkldhcnivrlryffyssgekkdevylnlvldyvpetvyrvarhy srakqtlpviyvklymyqlfrslayihsfgichrdikpqnllldpdtavlklcdfgsakq lvrgepnvsyicsryyrapelifgatdytssidvwsagcvlaelllgqpifpgdsgvdql veiikvlgtptreqiremnpnytefkfpqikahpwtkvfrprtppeaialcsrlleytpt arltpleacahsffdelrdpnvklpngrdtpalfnfttqelssnpplatilipphariq
>3i4bB (B:) ttsfaesckpvqqpsafgsmkvsrdkdgskvttvvatpgqgpdrpqevsytdtkvigngs fgvvyqaklcdsgelvaikkvlqdkrfknrelqimrkldhcnivrlryffyssgekkdev ylnlvldyvpetvyrvarhysrakqtlpviyvklymyqlfrslayihsfgichrdikpqn llldpdtavlklcdfgsakqlvrgepnvsyicsryyrapelifgatdytssidvwsagcv laelllgqpifpgdsgvdqlveiikvlgtptreqiremnpnytefkfpqikahpwtkvfr prtppeaialcsrlleytptarltpleacahsffdelrdpnvklpngrdtpalfnfttqe lssnpplatilipphariqaaastptnataasdantgdrgqtnnaasasasnst
>3i4bB (B:) kvttvvatpgqgpdrpqevsytdtkvigngsfgvvyqaklcdsgelvaikkvlqdkrfkn relqimrkldhcnivrlryffyssgekkdevylnlvldyvpetvyrvarhysrakqtlpv iyvklymyqlfrslayihsfgichrdikpqnllldpdtavlklcdfgsakqlvrgepnvs yicsryyrapelifgatdytssidvwsagcvlaelllgqpifpgdsgvdqlveiikvlgt ptreqiremnpnytefkfpqikahpwtkvfrprtppeaialcsrlleytptarltpleac ahsffdelrdpnvklpngrdtpalfnfttqelssnpplatilippha