>3l9rA (A:) observed residues (from ATOM records)
vfqgptsfhlmqistfvnstwaqnqgsgwlddlqihgwesdsgtaiflkpwskgnfsdde
vtelvdlfrayfigftrevqdrvnefqleypfviqvtagcelhsgaiesslrgalggldf
vsiqnhscvpapdsgsrgqkfcalttqyqgisdiierllsetcpryllgvldagkaelqr
qvkpeawlssgptpgpgrlllvchvsgfypkpvrvmwmrgeqeqpgtqqgdlmpnadwtw
ylrvtlnvaageaaglncrvkhsslgdqdiilywh