>5xakB (B:) observed residues (from ATOM records)
glfltlegldgsgkttqarrlaafleaqgrpvlltrepggglpevrsllltqelspeaey
llfsadraehvrkvilpglaagkvvisdryldsslayqgygrglplpwlrevareatrgl
kprltflldlppeaaglgleffrrvregylalaraepgrfvvldatlpeeeiaraiqahl
rpll