Chains and heterogens:
PDB Chain Sequences:
>1ax1_ (-) vetisfsfsefepgndnltlqgaalitqsgvlqltkinqngmpawdstgrtlyakpvhiw dmttgtvasfetrfsfsieqpytrplpadglvffmgptkskpaqgygylgifnnskqdns yqtlgvefdtfsnpwdppqvphigidvnsirsiktqpfqldngqvanvvikydasskilh avlvypssgaiytiaeivdvkqvlpewvdvglsgatgaqrdaaethdvyswsfqaslpe