>3k49C (C:) observed residues (from ATOM records)
splleqlrnsssnmslkdifghslefckdqhgsrfiqrelatspasekevifneirddai
elsndvfgnyviqkffefgskiqkntlvdqfkgnmkqlslqmyacrviqkaleyidsnqr
ielvlelsdsvlqmikdqngnhviqkaietipieklpfilssltghiyhlsthsygcrvi
qrllefgssedqesilnelkdfipyliqdqygnyviqyvlqqdqftnkemvdikqeiiet
vannvveyskhkfasnvveksilygsknqkdliiskilprdknhalnleddspmilmikd
qfanyviqklvnvsegegkkliviairayldklnksngnrhlasveklaalve