Chains and heterogens:
PDB Chain Sequences:
>1a6cA (A:) avtvvpdptccgtlsfkvpkdakkgkhlgtfdirqaimdygglhsqewcakgivnptftv rmhaprnafaglsiactfddykridlpalgnecppsemfelptkvfmlkdadvhewqfny geltghglcnwanvatqptlyffvastnqvtmaadwqcivtmhvdmgpvidrfelnptmt wpiqlgdtfaidryyeakeikldgstsmlsisynfggpvkhskkhaisysravmsrnlgw sgtisgsvksvsslfctasfvifpweceapptlrqvlwgphqimhgdgqfeiaiktrlhs aatteegfgrlgilplsgpiapdahvgsyefivhintwrpdsqvhppmfssselynwftl tnlkpdantgvvnfdipgyihdfaskdatvtlasnplswlvaatgwhygevdlciswsrs kqaqaqegsvsittnyrdwgaywqgqariydlrrteaeipiflgsyagatpsgalgkqny vrisivnakdivalrvclrpksikfwgrsatlf