>4a1wA (A:) observed residues (from ATOM records)
msqsnrelvvdflsyklsqkgyswsqmaavkqalreagdefelryrrafsdltsqlhitp
gtayqsfeqvvnelfrdgvnwgrivaffsfggalcvesvdkemqvlvsriaawmatylnd
hlepwiqenggwdtfvelygn