>1g57A (A:) observed residues (from ATOM records)
llssfgtpfervenalaalregrgvmvldenegdmifpaetmtveqmaltirhgsgivcl
citedrrkqldlpmmvenntsaygtgftvtieaaegvttgvsaadrittvraaiadgakp
sdlnrpghvfplraqaggvltrgghteatidlmtlagfkpagvlceltnddgtmarapec
iefankhnmalvtiedlvayrqahe