>4cr2Q (Q:) observed residues (from ATOM records)
mslpgskleearrlvnekqyneaeqvylslldkdssqssaaagasvddkrrneqetsile
lgqlyvtmgakdklrefiphsteymmqfaksktvkvlktliekfeqvpdslddqifvcek
siefakrekrvflkhslsiklatlhyqkkqykdslalindllrefkklddkpslvdvhll
eskvyhklrnlakskasltaartaansiycptqtvaeldlmsgilhcedkdyktafsyff
esfesyhnltthnsyekacqvlkymllskimlnliddvknilnakytketyqsrgidamk
avaeaynnrslldfntalkqyekelmgdeltrshfnalydtllesnlckiiepfecveis
hiskiigldtqqvegklsqmildkifygvldqgngwlyvyetpnqdatydsalelvgqln
kvvdqlfekas