Chains and heterogens:
PDB Chain Sequences:
>3fcrA (A:) gmlkndqldqwdrdnffhpsthlaqhargesanrviktasgvfiedrdgtklldafagly cvnvgygrqeiaeaiadqarelayyhsyvghgteasitlakmildrapknmskvyfglgg sdanetnvkliwyynnilgrpekkkiisrwrgyhgsglvtgsltglelfhkkfdlpveqv ihteapyyfrredlnqteeqfvahcvaelealieregadtiaafigepilgtggivpppa gyweaiqtvlnkhdillvadevvtgfgrlgtmfgsdhyglepdiitiakgltsayaplsg sivsdkvwkvleqgtdengpighgwtysahpigaaagvanlklldelnlvsnagevgayl natmaealsqhanvgdvrgegllcavefvkdrdsrtffdaadkigpqisaklleqdkiia rampqgdilgfappfcltraeadqvvegtlravkavlg