>2fa9A (A:) observed residues (from ATOM records)
ssvlqflglykktgklvflgldnagkttllhmlkptseeltiagmtfttfdlgrrvwkny
lpaingivflvdcadherlleskeeldslmtdetianvpililgnkidrpeaiseerlre
mfglygqttgkgsvslkelnarplevfmcsvlkrqgygegfrwmaqyid