>1xf4L (L:) observed residues (from ATOM records)
elqmtqspaslsasvgetvtitcraseniysylawyqqkqgkspqllvynaktlaegvps
rfsgsgsgtqfslkinslqpedfgsyycqhhygtpltfgagtklelkradaaptvsifpp
sseqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysmsstlt
ltkdeyerhnsytceathktstspivksfnrne