>3sxpB (B:) observed residues (from ATOM records)
mryiddelenqtilitggagfvgsnlafhfqenhpkakvvvldkfrsnpsslghfknlig
fkgeviaadinnpldlrrleklhfdylfhqaavsdttmlnqelvmktnyqaflnlleiar
skkakviyassagvygntkapnvvgknespenvygfsklcmdefvlshsndnvqvglryf
nvygprefykektasmvlqlalgamafkevklfefgeqlrdfvyiedviqanvkamkaqk
sgvynvgysqarsyneivsilkehlgdfkvtyikqkhtqahieptildldytplydlesg
ikdylphihai