>1s71B (B:) observed residues (from ATOM records)
msatgpgivvidkpagmtshdvvgrcrrifatrrvghagtldpmatgvlvigieratkil
glltaapksyaatirlgqttstedaegqvlqsvpakhltieaidaamerlrsvqlearpi
ridrfellaarrrdqlididveidcssgtyiralardlgdalgvgghvtalrrtrvgrfe
ldqarslddlaerpalslsldeacllmfarrdltaaeasaaangrslpavgidgvyaacd
adgrviallrdegsrtrsvavlrpat