Chains and heterogens:
PDB Chain Sequences:
>2dri_ (-) kdtialvvstlnnpffvslkdgaqkeadklgynlvvldsqnnpakelanvqdltvrgtki llinptdsdavgnavkmanqanipvitldrqatkgevvshiasdnvlggkiagdyiakka gegakvielqgiagtsaarergegfqqavaahkfnvlasqpadfdrikglnvmqnlltah pdvqavfaqndemalgalralqtagksdvmvvgfdgtpdgekavndgklaatiaqlpdqi gakgvetadkvlkgekvqakypvdlklvvkq