>3mtfB (B:) observed residues (from ATOM records)
rtvarditllecvgkgrygevwrgswqgenvavkifssrdekswfretelyntvmlrhen
ilgfiasdmtsrhsstqlwlithyhemgslydylqlttldtvsclrivlsiasglahlhi
eifgtqgkpaiahrdlksknilvkkngqcciadlglavmhsqstnqldvgnnprvgtkry
mapevldetiqvdcfdsykrvdiwafglvlwevarrmvsngivedykppfydvvpndpsf
edmrkvvcvdqqrpnipnrwfsdptltslaklmkecwyqnpsarltalrikktltkid