>3v91A (A:) observed residues (from ATOM records)
mtdqafvtlttndayakgalvlgsslkqhrtsrrlavlttpqvsdtmrkaleivfdevit
vdildsgdsahltlmkrpelgvmltklhcwsltqyskcvfmdadtlvlaniddlfereel
saapdpgwpdcfnsgvfvyqpsvetynqllhvaseqgsfdggdqgllntffnswattdir
khlpfiynlssisiysylpafkafganakvvhflgqtkpwnytydtktksvrsthpqfln
vwwdifttsvvpllqq