>2a1lA (A:) observed residues (from ATOM records)
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yhlkskvpafvrmiapegslvfhekawnaypycrtivtneymkddffikietwhkpdlgt
lenvhgldpntwktveivhidiadrsqvepadykadedpalfqsvktkrgplgpnwkkel
antpcpkmcayklvtikfkwwglqskvenfiqkqekriftnlhrqlfcwidkwidltmed
irrmedetqkeletmrkkgsvrgtsaada