Chains and heterogens:
PDB Chain Sequences:
>1lvaA (A:) gspekilaqiiqehregldwqeaatraslsleetrkllqsmaaagqvtllrvendlyais teryqawwqavtraleefhsryplrpglareelrsryfsrlparvyqalleewsregrlq laantvalagftpsfsetqkkllkdledkyrvsrwqppsfkevagsfnldpseleellhy lvregvlvkindefywhrqalgeareviknlastgpfglaeardalgssrkyvlplleyl dqvkftrrvgdkrvvvgn