>1r5tB (B:) observed residues (from ATOM records)
mkvggiedrqlealkraalkacelsyspyshfrvgcsiltnndviftganvenasysnci
caersamiqvlmaghrsgwkcmvicgdsedqcvspcgvcrqfinefvvkdfpivmlnstg
srskvmtmgellpmafgps