>sp|Q3ST00|HIS3_NITWN Phosphoribosyl-AMP cyclohydrolase OS=Nitrobacter winogradskyi (strain ATCC 25391 / DSM 10237 / CIP 104748 / NCIMB 11846 / Nb-255) OX=323098 GN=hisI PE=3 SV=1 MSGSKSSSETEEGLAFQPSFDASGLVTCVATDAKTGDVLMVAHMNEEALRRTVETGDAWY YSRSRKALWRKGESSGQVQRVLEMRTDCDQDAVWIKVEQQGAACHTGRRSCFYRAVAKGE GAGIRLAFVDAERLFDPAEVYRAKA