>sp|Q8K9D8|QUED_BUCAP 6-carboxy-5,6,7,8-tetrahydropterin synthase OS=Buchnera aphidicola subsp. Schizaphis graminum GN=queD MKTIIFKDFQFEAAHYLPYVPKMHKCRRLHGHSFFVRLELKDKINEKNGWIIDYAEIKLA FQPIYDQLDHHFLNDIPGLENPTSEILAKWIWHRLKPKLSILNTIIIKETCTSGCIYQGF