>tr|B4XNL4|B4XNL4_9BURK Phosphoribosyl-AMP cyclohydrolase OS=Burkholderia cenocepacia GN=hisI MNTETKSLPAWLDKVRWDDNGLVPVIAQEASTNDVLMFAWMNREALAKTIETQRAVYYSR SRKRLWFKGEESGHVQHVHEVRLDCDEDVVLLKVEQVSGIACHTGRHSCFFQKFEGTVDG GDWVAVEPVLKDPEHIYK