>4xlvA (A:) observed residues (from ATOM records)
sasdvfpssvyvpdewevsrekitllrelgqgsfgmvyegnardiikgeaetrvavktvn
esaslrerieflneasvmkgftchhvvrllgvvskgqptlvvmelmahgdlksylrslrp
eaennpgrppptlqemiqmaaeiadgmaylnakkfvhrdlaarncmvahdftvkigdfgm
trdiyetdyyrkggkgllpvrwmapeslkdgvfttssdmwsfgvvlweitslaeqpyqgl
sneqvlkfvmdggyldqpdncpervtdlmrmcwqfnpnmrptfleivnllkddlhpsfpe
vsffhseenk