Chains and heterogens:
PDB Chain Sequences:
>1byh_ (-) qtggsffepfnsynsgtwekadgysnggvfnctwrannvnftndgklklgltssaynkfd caeyrstniygyglyevsmkpakntgivssfftytgpahgtqwdeidieflgkdttkvqf nyytngvgghekvislgfdaskgfhtyafdwqpgyikwyvdgvlkhtatanipstpgkim mnlwngtgvddwlgsynganplyaeydwvkytsn