>2aztB (B:) observed residues (from ATOM records)
yrtrslgvaaeglpdqyadgeaarvwqlyigdtrsrtaeykawllgllrqhgcqrvldva
cgtgvdsimlveegfsvtsvdasdkmlkyalkerwnrrhepafdkwvieeanwmtldkdv
pqeggfdaviclgnsfahlpdckgdqsehrlalkniasmvraggllvidnrnydhilstg
cappgkniyyksdltkdvttsvlivnnkahmvtldytvqglskfrlsyyphclasftell
qaafggkcqhsvlgdfkpykpgqtyipcyfihvlkrt