>sp|A4Y5N5|RIBA_SHEPC GTP cyclohydrolase-2 OS=Shewanella putrefaciens GN=ribA MSIKYVATSKLPTPWGVFAMHGFEDTETGKEHVALTFGTLSADEPVLGRIHSECLTGDAL FSLRCDCGFQLQTAMQNIAETGCGFILYLRQEGRGIGLLNKIRAYELQDKGANTVEANEQ LGFPADMRKYDMIKPMLEQIGVKHVRLMTNNPRKVKAMKEFGIEVVERVPLQVGKNRYNE AYLKTKSTELGHMMSEYHFVDED