>sp|B1XSV2|HIS4_POLNS 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Polynucleobacter necessarius subsp. necessarius GN=hisA MLLIPAIDLKDGHCVRLEQGDMDKATVFSEDPGAMAAHWISKGARCLHLVDLNGAFAGKL KNESAIKSILKAVGDEIPVQLGGGIRDLETIERLLDDGISTVIIGTAAVKNPGFVQDACT AFPGHVMVGLDARDGKVATDGWSKITCHKVIDLAKKFEDWGVEAIIYTDIGRDGMLKGVN IDATVKLAQAIRIPVIASGGLSNNQDIDALCKAEEEGVMGVIAGRSIYASDLDLAAAQKY ADELTLKYKKKTN