>5b1zA (A:) observed residues (from ATOM records)
msqsnrelvvdflsyklsqkgyswsqmaavkqalreagdefelryrrafsdltsqlhitp
gtayqsfeqvvnelfrdgvnwgrivaffsfggalcvesvdkemqvlvsriaawmatylnd
hlepwiqenggwdtfvelygnnaa