>sp|A1VMA8|GUAC_POLNA GMP reductase OS=Polaromonas naphthalenivorans GN=guaC MEIFDYDNILLLPRKCRVESRAECDASVTLGQRSFRIPVVPANMKTVVNEDICVWMAQNG YFYVMHRFDLDNLQFVRDMQARGVYASISLGVKQPDYDTVDRLVAEGLAPEYITIDIAHG HADTVRKMIAYLKNHLPESFVIAGNVATPEAVIDLENWGADATKVGIGPGKVCITKMKTG FGTGGWQLSALKWCARVATKPIIADGGIREHGDIAKSIRFGATMVMIGSMLAGLEESPGQ TVEVDGKLFKEYYGSASDFNKGEYKHVEGKRILEPIKGKLVDTLREMEEDVQSAISYAGG TRLMDIRKVNYVVLGGKNSNEDLMM