>tr|A0A9E7YRU3|A0A9E7YRU3_9RALS 1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino] imidazole-4-carboxamide isomerase OS=Ralstonia sp. RS642 GN=hisA MLLIPAIDLKDGQCVRLKQGDMDQATVFSEDPAAMARHWVDQGARRLHLVDLNGAFVGKP RNEAAIKAIIAEVGSEIPVQLGGGIRDLNTIERWLDDGLSYVIIGTAAVKNPGFLQDACT AFGGHIIVGLDARDGKVATDGWSKLTGHEVVDLARKYEDYGVESIIYTDIGRDGMLQGIN IDATVKLAQSVSIPVIASGGLSSLKDIDHLCAVESEGVEGVICGRAIYSGDLNFREAQDH ADKLGAA