Chains and heterogens:
PDB Chain Sequences:
>1lxl_ (-) msmamsqsnrelvvdflsyklsqkgyswsqfsdveenrteapegtesemetpsaingnps whladspavngatghsssldarevipmaavkqalreagdefelryrrafsdltsqlhitp gtayqsfeqvvnelfrdgvnwgrivaffsfggalcvesvdkemqvlvsriaawmatylnd hlepwiqenggwdtfvelygnnaaaesrkgqerlehhhhhh