>3mxiB (B:) observed residues (from ATOM records)
lphghmqtliflnleatglpssrpevtelcllavhrraleghpppvprpprvvdklslci
apgkacspgaseitglskaelevqgrqrfddnlaillraflqrqpqpcclvahngdrydf
pllqtelarlstpspldgtfcvdsiaalkalesyslgsiytrlywqaptdshtaegdvlt
llsicqwkpqallqwvdeharpfstvkpmyg