>2z43A (A:) observed residues (from ATOM records)
rfktalevkkermnvkkistgsqaldgllaggietrtmteffgefgsgktqlchqlsvnv
qlppekgglsgkavyidtegtfrwerienmakalgldidnvmnniyyiraintdhqiaiv
ddlqelvskdpsiklivvdsvtshfraeypgrenlavrqqklnkhlhqltrlaevydiav
iitnqvgiriqlkksrgnrriarvvdaphlpegevvfalteegirdae