Chains and heterogens:
PDB Chain Sequences:
>7ludA (A:) qvqlvqsgsevkkpgasvkvsckasgyrfsnygiswvrqapgqglewmgwisayngniky gnnlqgrvtvttdtstataymevrsltsddtavyycardvpadgvhfmdvwgqgtlvtvs sastkgpsvfplapsskstsggtaalgclvkdyfpepvtvswnsgaltsgvhtfpavlqs sglyslssvvtvpssslgtqtyicnvnhkpsntkvdkkvepkscd
>7ludA (A:) qvqlvqsgsevkkpgasvkvsckasgyrfsnygiswvrqapgqglewmgwisayngniky gnnlqgrvtvttdtstataymevrsltsddtavyycardvpadgvhfmdvwgqgtlvtvs sastkgpsvfplapsskstsggtaalgclvkdyfpepvtvswnsgaltsgvhtfpavlqs sglyslssvvtvpssslgtqtyicnvnhkpsntkvdkkvepks
>7ludB (B:) dvvmtqsplslpvtlgqpasiscrssqslvhsdtntylnwfqqrpgqsprrliykvsnrd sgvpdrfsgsgsgttftlkisrveaedvgiyycmqgshwaptfgqgtkveikrtvaapsv fifppsdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstysl sstltlskadyekhkvyacevthqglsspvtksfnrgec
>7ludB (B:) dvvmtqsplslpvtlgqpasiscrssqslvhsdtntylnwfqqrpgqsprrliykvsnrd sgvpdrfsgsgsgttftlkisrveaedvgiyycmqgshwaptfgqgtkveikrtvaapsv fifppsdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstysl sstltlskadyekhkvyacevthqglsspvtksfnr
>7ludH (H:) qvqlvqsgsevkkpgasvkvsckasgyrfsnygiswvrqapgqglewmgwisayngniky gnnlqgrvtvttdtstataymevrsltsddtavyycardvpadgvhfmdvwgqgtlvtvs sastkgpsvfplapsskstsggtaalgclvkdyfpepvtvswnsgaltsgvhtfpavlqs sglyslssvvtvpssslgtqtyicnvnhkpsntkvdkkvepkscd
>7ludH (H:) qvqlvqsgsevkkpgasvkvsckasgyrfsnygiswvrqapgqglewmgwisayngniky gnnlqgrvtvttdtstataymevrsltsddtavyycardvpadgvhfmdvwgqgtlvtvs sastkgpsvfplapsskstsggtaalgclvkdyfpepvtvswnsgaltsgvhtfpavlqs sglyslssvvtvpssslgtqtyicnvnhkpsntkvdkkvepks
>7ludL (L:) dvvmtqsplslpvtlgqpasiscrssqslvhsdtntylnwfqqrpgqsprrliykvsnrd sgvpdrfsgsgsgttftlkisrveaedvgiyycmqgshwaptfgqgtkveikrtvaapsv fifppsdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstysl sstltlskadyekhkvyacevthqglsspvtksfnrgec