>1fl1B (B:) observed residues (from ATOM records)
aqglyvggfvdvvdqvtdylpvteplpitiehlpetevgwtlglfqvshgifctgaitsp
aflelasrladtshvarapvknlpkeplleilhtwlpglslssihppvfqhvslcalgrr
rgtvavyghdaewvvsrfssvskserahilqhvsscrledlstpnfvspletlmakaida
gfirdrldllktdrgvasilspvylka