>sp|O67826|QUEE_AQUAE 7-carboxy-7-deazaguanine synthase OS=Aquifex aeolicus GN=queE MLRNKVRKTDTLIALNEVYESIQGEGLLVGLPSVFIRLQGCNLRCPWCDQPEALSFSGRK VKLSSLINELKKFTAKHIVITGGEPFAHRELPFIVEFLLSEGYSVQIETNGTLWVEEMEK FAEGIHITCSPKGVAKYYVHPKILKYAKELKFVVDKEFSKEVLKKEEFERFLREGKVVLQ PESNRKEMMEKALKIQKELLKECYTVRVIPQVHKCFDLK