Chains and heterogens:
PDB Chain Sequences:
>1zin_ (-) mnlvlmglpgagkgtqaekivaaygiphistgdmfraamkegtplglqakqymdrgdlvp devtigivrerlskddcqngflldgfprtvaqaealetmladigrkldyvihidvrqdvl merltgrricrncgatyhlifhppakpgvcdkcggelyqraddneatvanrlevnmkqmk plvdfyeqkgylrningeqdmekvfadirellgglar