Chains and heterogens:
PDB Chain Sequences:
>1nvgA (A:) mravrlveigkplslqeigvpkpkgpqvlikveaagvchsdvhmrqgrfgnlrivedlgv klpvtlgheiagkieevgdevvgyskgdlvavnpwqgegncyycrigeehlcdsprwlgi nfdgayaeyvivphykymyklrrlnaveaapltcsgittyravrkasldptktllvvgag gglgtmavqiakavsgatiigvdvreeaveaakragadyvinasmqdplaeirriteskg vdavidlnysektlsvypkalakqgkyvmvglfgadlhyhaplitlseiqfvgslvgnqs dflgimrlaeagkvkpmitktmkleeaneaidnlenfkaigrqvlip