Chains and heterogens:
PDB Chain Sequences:
>1af0A (A:) attgydavddllhyhergngiqingkdsfsneqaglfitrenqtwngykvfgqpvkltfs fpdykfsstnvagdtglskfsaeqqqqaklslqswadvanitftevaagqkanitfgnys qdrpghydygtqayaflpntiwqgqdlggqtwynvnqsnvkhpatedygrqtftheigha lglshpgdynagegdptyndvtyaedtrqfslmsywsetntggdngghyaaapllddiaa iqhlyganlstrtgdtvygfnsntgrdflsttsnsqkvifaawdaggndtfdfsgytanq rinlneksfsdvgglkgnvsiaagvtienaiggsgndvivgnaannvlkggagndvlfgg ggadelwggagkdifvfsaasdsapgasdwirdfqkgidkidlsffdkeansssfihfvd hfsgtageallsynassnvtdlsvnigghqapdflvkivgqvdvatdfiv