Chains and heterogens:
PDB Chain Sequences:
>1aklA (A:) grsdaytqvdnflhayarggdelvnghpsytvdqaaeqilreqaswqkapgdsvltlsys fltkpndffntpwkyvsdiyslgkfsafsaqqqaqaklslqswsdvtnihfvdagqgdqg dltfgnfsssvggaafaflpdvpdalkgqswylinssysanvnpangnygrqtltheigh tlglshpgdynagegdptyadatyaedtraysvmsyweeqntgqdfkgayssapllddia aiqklyganlttrtgdtvygfnsnterdfysatssssklvfsvwdaggndtldfsgfsqn qkinlnekalsdvgglkgnvsiaagvtvenaiggsgsdlligndvanvlkggagndilyg glgadqlwggagadtfvygdiaessaaapdtlrdfvsgqdkidlsgldafvngglvlqyv dafagkagqailsydaaskagslaidfsgdahadfainligqatqadivv