Chains and heterogens:
PDB Chain Sequences:
>1z3iX (X:) lglrragvrkalhdpfedgalvlyeppaisahdlikadkeklpvhvvvdpvlskvlrphq regvkflwdcvtgrriensygcimademglgktlqcitliwtllkqspdckpeidkvivv spsslvrnwynevgkwlggrvqpvaidggskdeidsklvnfisqqgmriptpiliisyet frlhaevlhkgkvglvicdeghrlknsdnqtylalnsmnaqrrvlisgtpiqndlleyfs lvhfvnsgilgtaqefkkrfeipilkgrdadasdkdraageqklqelisivnrclirrts dilskylpvkieqvvccnltplqkelyklflkqakpveslqtgkisvsslssitslkklc nhpaliyekcltgeegfdgaldlfpqnystkavepqlsgkmlvldyilamtrtttsdkvv lvsnytqtldlfeklcrnrrylyvrldgtmsikkrakiverfnnpsspefifmlsskagg cglnliganrlvmfdpdwnpandeqamarvwrdgqkktcyiyrllstgtieekilqrqah kkalsscvvdeeqdverhfslgelrelfslnektlsdthdrfrcrrcvngrqvrpppdds dctcdlsnwhhcadkrglrdpvlqaswdaavsfvfhqrshedqr