>3a28B (B:) observed residues (from ATOM records)
skvamvtggaqgigrgiseklaadgfdiavadlpqqeeqaaetiklieaadqkavfvgld
vtdkanfdsaideaaeklggfdvlvnnagiaqikpllevteedlkqiysvnvfsvffgiq
aasrkfdelgvkgkiinaasiaaiqgfpilsaysttkfavrgltqaaaqelapkghtvna
yapgivgtgmweqidaelskingkpigenfkeysssialgrpsvpedvaglvsflasens
nyvtgqvmlvdggmlyn