>sp|B4S4Z8|HIS4_PROA2 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Prosthecochloris aestuarii GN=hisA MLIIPAIDIKDGKCVRLTRGDFDQQKIYLDNPRDMAIIWRKQNAKMLHVVDLDAALTGTM VNFEKIREIVATLDIPVQVGGGIRSFEDVERYLGIGVSRVVIGSAAVTNPQLIAELLATF SPSQIVVGIDAENGIPKIKGWTESSSMQDYELALEMKKLGVKRIIYTDISRDGMMQGVGY ESTRRFAMKAGMRVTASGGVTSSDDLKKLQTLEQYGVDSVIVGKALYESNFPCQQLWYNY EKGMGIDCNFTTASVRGKCCF