>5u13A (A:) observed residues (from ATOM records)
mklfaqgtsldlshphvmgilnvtnslidavkhanlminagatiidvggestrpgaaevs
veeelqrvipvveaiaqrfevwisvdtskpeviresakvgahiindirslsepgaleaaa
etglpvclmhmqgnpktmqeapkyddvfaevnryfieqiarceqagiakekllldpgfgf
gknlshnysllarlaefhhfnlpllvgmsrksmigqllnvgpserlsgslacaviaamqg
ahiirvhdvketveamrvveatlsakenkrye