Chains and heterogens:
PDB Chain Sequences:
>1nvkA (A:) mkiaiinmgnnvinfktvpssetiylfkvisemglnvdiislkngvytksfdevdvndyd rlivvnssinffggkpnlailsaqkfmakykskiyylftdirlpfsqswpnvknrpwayl yteeellikspikvisqginldiakaahkkvdnviefeyfpieqykihmndfqlskptkk tldviyggsfrsgqreskmveflfdtglnieffgnarekqfknpkypwtkapvftgkipm nmvseknsqaiaaliigdknyndnfitlrvwetmasdavmlideefdtkhriindarfyv nnraelidrvnelkhsdvlrkemlsiqhdilnktrakkaewqdafkkaidl