Chains and heterogens:
PDB Chain Sequences:
>2b4xI (I:) vdictakprdipmnpmciyrspekkatedegseqkipeatnrrvwelskansrfattfyq hladskndndniflsplsistafamtklgacndtlqqlmevfkfdtisektsdqihfffa klncrlyrkaakssklvsanrlfgdksltfnetyqdiselvygaklqpldfkenaeqsra ainkwvsnktegritdvipseaineltvlvlvntilfkglwkskfspentrkelfykadg escsasmmyqegkfryrrvaegtqvlelpfkgdditmvlilpkpekslakvekeltpevl qewldeleemmlvvhmprfriedgfslkeqlqdmglvdlfspeksklpgivaegrddlyv sdafhkaflevneegseaaastavviagrslnpnrvtfkanrpflvfirevplntiifmg rvanpcv
>2b4xI (I:) vdictakprdipmnpmciyrspekkeqkipeatnrrvwelskansrfattfyqhladskn dndniflsplsistafamtklgacndtlqqlmevfkfdtisektsdqihfffaklncrly rkkssklvsanrlfgdksltfnetyqdiselvygaklqpldfkenaeqsraainkwvsnk tegritdvipseaineltvlvlvntilfkglwkskfspentrkelfykadgescsasmmy qegkfryrrvaegtqvlelpfkgdditmvlilpkpekslakvekeltpevlqewldelee mmlvvhmprfriedgfslkeqlqdmglvdlfspeksklpgiddlyvsdafhkaflevnee gseaaastavviagrslnpnrvtfkanrpflvfirevplntiifmgrvanpcv
>2b4xL (L:) vdictakprdipmnpmciyrspekkatedegseqkipeatnrrvwelskansrfattfyq hladskndndniflsplsistafamtklgacndtlqqlmevfkfdtisektsdqihfffa klncrlyrkankssklvsanrlfgdksltfnetyqdiselvygaklqpldfkenaeqsra ainkwvsnktegritdvipseaineltvlvlvntiyfkglwkskfspentrkelfykadg escsasmmyqegkfryrrvaegtqvlelpfkgdditmvlilpkpekslakvekeltpevl qewldeleemmlvvhmprfriedgfslkeqlqdmglvdlfspeksklpgivaegrddlyv sdafhkaflevneegseaaastavviagrslnpnrvtfkanrpflvfirevplntiifmg rvanpcv
>2b4xL (L:) vdictakprdipmnpmciyrspatnrrvwelskansrfattfyqhladskndndniflsp lsistafamtklgacndtlqqlmevfkfdtisektsdqihfffaklncrlyrkanksskl vsanrlfgdksltfnetyqdiselvygaklqpldfkenaeqsraainkwvsnktegritd vipseaineltvlvlvntiyfkglwkskfspentrkelfykadgescsasmmyqegkfry rrvaegtqvlelpfkgdditmvlilpkpekslakvekeltpevlqewldeleemmlvvhm prfriedgfslkeqlqdmglvdlfspeksklpgivaegrddlyvsdafhkaflevneegs eaaastavviagrslpnrvtfkanrpflvfirevplntiifmgrvanpcv