Chains and heterogens:
PDB Chain Sequences:
>3ng1A (A:) mfqqlsarlqeaigrlrgrgriteedlkatlreirralmdadvnlevardfvervreeal gkqvlesltpaevilatvyealkealggearlpvlkdrnlwflvglqgsgktttaaklal yykgkgrrpllvaadtqrpaareqlrllgekvgvpvlevmdgespesirrrveekarlea rdlilvdtagrlqideplmgelarlkevlgpdevllvldamtgqealsvarafdekvgvt glvltkldgdarggaalsarhvtgkpiyfagvsekpeglepfyperlagrilgm
>3ng1B (B:) mfqqlsarlqeaigrlrgrgriteedlkatlreirralmdadvnlevardfvervreeal gkqvlesltpaevilatvyealkealggearlpvlkdrnlwflvglqgsgktttaaklal yykgkgrrpllvaadtqrpaareqlrllgekvgvpvlevmdgespesirrrveekarlea rdlilvdtagrlqideplmgelarlkevlgpdevllvldamtgqealsvarafdekvgvt glvltkldgdarggaalsarhvtgkpiyfagvsekpeglepfyperlagrilgm