Chains and heterogens:
PDB Chain Sequences:
>1ydsE (E:) vkeflakakedflkkwenpaqntahldqferiktlgtgsfgrvmlvkhmetgnhyamkil dkqkvvklkqiehtlnekrilqavnfpflvklefsfkdnsnlymvmeyvaggemfshlrr igrfsepharfyaaqivltfeylhsldliyrdlkpenllidqqgyiqvtdfgfakrvkgr twtlcgtpeylapeiilskgynkavdwwalgvliyemaagyppffadqpiqiyekivsgk vrfpshfssdlkdllrnllqvdltkrfgnlkdgvndiknhkwfattdwiaiyqrkveapf ipkfkgpgdtsnfddyeeeeirvsinekcgkefsef