>sp|Q3IW86|METK_CERS4 S-adenosylmethionine synthase OS=Cereibacter sphaeroides GN=metK MSRMNYVFTSESVSEGHPDKLCDRVSDAVLDTFLAEEPTARVACETFATTGRVVVGGEVG LSDPQKLDEFMERVDGIVRDCVKDIGYEQQEFHWRTIEVQNFLHRQSAHIAQGVDKDGAG DQGIMFGYACRETPELMPAPIQYSHAILRRLAEVRKSGQEPDLRPDAKSQLSLRYENGKP VEVRSIVLSTQHAHEEQTSDDIRAIVEPYIREVLPEGWITEATEWWVNPTGTFVIGGPDG DAGLTGRKIIVDTYGGAAPHGGGAFSGKDPTKVDRSAAYAARYLAKNVVAAGLAERCTLQ VSYAIGVAKPLSIYVDTHGTGQVDAAQIEKAVADCMDLTPRGIREHLNLCRPIYARTSAY GHFGRAPEADGGFSWERTDLTDALLKAV