Chains and heterogens:
PDB Chain Sequences:
>1jb7A (A:) yeyvelakasltsaqpqhfyavvidatfpyktnqeryicslkivdptlylkqqkgagdas dyatlvlyakrfedlpiihragdiirvhratlrlyngqrqfnanvfyssswalfstdkrs vtqeinnqdavsdttpfsfsskhatiekneisilqnlrkwanqyfssysvissdmytaln kaqaqkgdfdvvakilqvheldeytnelklkdasgqvfytlslklkfphvrtgevvrirs atydetstqkkvlilshysniitfiqssklakelrakiqddhsvevaslkknvslnavvl tevdkkhaalpstslqdlfhhadsdkelqaqdtfrtqfyvtkiepsdvkewvkgydrktk kssslkgasgkgdnifqvqflvkdastqlnnntyrvllytqdglganffnvkadnlhkna darkkledsaelltkfnsyvdavverrngfylikdtkliy
>1jb7B (B:) qqqsafkqlytelfnnegdfskvssnlkkplkcyvkesyphflvtdgyffvapyftkeav nefhakfpnvnivdltdkvivinnwslelrrvnsaevftsyanlearlivhsfkpnlqer lnptrypvnlfrddefkttiqhfrhtalqaainktvkgdnlvdiskvadaagkkgkvdag ivkasaskgdefsdfsfkegntatlkiadifvqekg