>1z81A (A:) observed residues (from ATOM records)
tiipyylsnlltnpsnpvvfmdinlgnnflgkfkfelfqnivpktsenfrqfctgeykvn
nlpvgykntifhrvikefmiqggdfinhngsgslsiygekfddenfdikhdkegllsman
sgpntngcqffittkkcewldgknvvfgriidndsllllkkienvsvtpyiykpkipinv
vecgel