Chains and heterogens:
PDB Chain Sequences:
>1a4jA (A:) elvmtqtplslpvslgdqasiscrssqslvhsngntylhwylqkpgqspklliykvsnrf sgvpdrfsgsgsgtdftlkisrveaedlgvyfcsqsthvpptfgggtkleikrtvaapsv fifppsdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstysl sstltlskadyekhkvyacevthqglsspvtksfnrg
>1a4jB (B:) qvqllesgpelkkpgetvkisckasgytftnygmnwvkqapgkglkwmgwintytgepty addfkgrfafsletsastaylqinnlknedtatyfcvqaerlrrtfdywgagttvtvssa stkgpsvfplapsskstsggtaalgclvkdyfpepvtvswnsgaltsgvhtfpavlqssg lyslssvvtvpssslgtqtyicnvnhkpsntkvdkkv
>1a4jH (H:) qvqllesgpelkkpgetvkisckasgytftnygmnwvkqapgkglkwmgwintytgepty addfkgrfafsletsastaylqinnlknedtatyfcvqaerlrrtfdywgagttvtvssa stkgpsvfplapsskstsggtaalgclvkdyfpepvtvswnsgaltsgvhtfpavlqssg lyslssvvtvpssslgtqtyicnvnhkpsntkvdkkv
>1a4jL (L:) elvmtqtplslpvslgdqasiscrssqslvhsngntylhwylqkpgqspklliykvsnrf sgvpdrfsgsgsgtdftlkisrveaedlgvyfcsqsthvpptfgggtkleikrtvaapsv fifppsdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstysl sstltlskadyekhkvyacevthqglsspvtksfnrg