>3ay4B (B:) observed residues (from ATOM records)
cpapellggpsvflfppkpkdtlmisrtpevtcvvvdvshedpevkfnwyvdgvevhnak
tkpreeqynstyrvvsvltvlhqdwlngkeykckvsnkalpapiektiskakgqprepqv
ytlppsrdeltknqvsltclvkgfypsdiavewesngqpennykttppvldsdgsfflys
kltvdksrwqqgnvfscsvmhealhnhytqkslsls