>sp|A2BK57|RIFK_HYPBU Riboflavin kinase OS=Hyperthermus butylicus GN=ribK MENGAVQQLQLLGKRVKGFGVGGRYVAHPYYSGRFRELLGCTPFPGTLNFDANLDWRELA SMCEPQVIPGTVWDGVRLGAVYVWKAKIMTRHGYVDCAVIRPLLSGHPPTVLEIVACEKL EPILENNPDKTVIVTIACKRGDALRWRRY