Chains and heterogens:
PDB Chain Sequences:
>3zrkA (A:) fgsmkvsrdkdgskvttvvatpgqgpdrpqevsytdtkvigngsfgvvyqaklcdsgelv aikkvlqdkrfknrelqimrkldhcnivrlryffyssgekkdevylnlvldyvpetvyrv arhysrakqtlpviyvklymyqlfrslayihsfgichrdikpqnllldpdtavlklcdfg sakqlvrgepnvsyicsryyrapelifgatdytssidvwsagcvlaelllgqpifpgdsg vdqlveiikvlgtptreqiremnpnytefkfpqikahpwtkvfrprtppeaialcsrlle ytptarltpleacahsffdelrdpnvklpngrdtpalfnfttqelssnpplatilippha riqaaastptn
>3zrkA (A:) kvttvvatpgqgpdrpqevsytdtkvigngsfgvvyqaklcdsgelvaikkvlqdkrfkn relqimrkldhcnivrlryffysskkdevylnlvldyvpetvyrvarhysrakqtlpviy vklymyqlfrslayihsfgichrdikpqnllldpdtavlklcdfgsakqlvrgepnvsyi csryyrapelifgatdytssidvwsagcvlaelllgqpifpgdsgvdqlveiikvlgtpt reqiremnpnytefkfpqikahpwtkvfrprtppeaialcsrlleytptarltpleacah sffdelrdpnvklpngrdtpalfnfttqelssnpplatilipphari
>3zrkB (B:) fgsmkvsrdkdgskvttvvatpgqgpdrpqevsytdtkvigngsfgvvyqaklcdsgelv aikkvlqdkrfknrelqimrkldhcnivrlryffyssgekkdevylnlvldyvpetvyrv arhysrakqtlpviyvklymyqlfrslayihsfgichrdikpqnllldpdtavlklcdfg sakqlvrgepnvsyicsryyrapelifgatdytssidvwsagcvlaelllgqpifpgdsg vdqlveiikvlgtptreqiremnpnytefkfpqikahpwtkvfrprtppeaialcsrlle ytptarltpleacahsffdelrdpnvklpngrdtpalfnfttqelssnpplatilippha riqaaastptn
>3zrkB (B:) kvttvvatpgqgpdrpqevsytdtkvigngsfgvvyqaklcdsgelvaikkvlqdkrfkn relqimrkldhcnivrlryffyssgekkdevylnlvldyvpetvyrvarhysrakqtlpv iyvklymyqlfrslayihsfgichrdikpqnllldpdtavlklcdfgsakqlvrgepnvs yicsryyrapelifgatdytssidvwsagcvlaelllgqpifpgdsgvdqlveiikvlgt ptreqiremnpnytefkfpqikahpwtkvfrprtppeaialcsrlleytptarltpleac ahsffdelrdpnvklpngrdtpalfnfttqelssnpplatilipphari