Chains and heterogens:
PDB Chain Sequences:
>1nlr_ (-) dtticepfgtttiqgryvvqnnrwgstapqcvtatdtgfrvtqadgsaptngapksypsv fngchytncspgtdlpvrldtvsaapssisygfvdgavynasydiwldptartdgvnqte imiwfnrvgpiqpigspvgtasvggrtwevwsggngsndvlsfvapsaisgwsfdvmdfv ratvarglaendwyltsvqagfepwqngaglavnsfsstvet