>5ab3B (B:) observed residues (from ATOM records)
miipalnliggtvvrvvrlgdyarlrdygndplprlqdyaaqgagvlhlvdltgakdpak
rqipliktlvagvnvpvqvgggvrteedvaallkagvarvviastavkspdvvkgwferf
gaqalvlaldvridehgtkqvagvsleqlvetylpvglkhvlctdisrdgtlagsnvsly
eevcarypqiafqssggigdiddiaalrgtgvrgvivgrallegkftvkeaiqcwqn