>sp|A1U670|HIS3_MARN8 Phosphoribosyl-AMP cyclohydrolase OS=Marinobacter nauticus GN=hisI MQDSPANVVQPDWLDDIQWTEDGLVPAIAQDADNGDILMMAWMNRESLRLTVEEGQAVYW SRSRGKLWRKGESSGHQQVLRDIRLDCDADVVLLKVEQKGGIACHTGRRSCFYRTLKDGQ WVSADPVIKDPNTIYGSN