>1na5A (A:) observed residues (from ATOM records)
qedsdiaflidgsgsiiphdfrrmkefvstvmeqlkksktlfslmqyseefrihftfkef
qnnpnprslvkpitqllgrthtatgirkvvrelfnitngarknafkilvvitdgekfgdp
lgyedvipeadregviryvigvgdafrseksrqelntiaskpprdhvfqvnnfealktiq
nqlrekifaigspgi