5.4.99.18	-	661776, 661777, 661977	
5.4.99.18	enzyme is active in Escherichia coli	678203	
5.4.99.18	expression in Escherichia coli	678260	
5.4.99.18	gene purE, expression of His-tagged enzyme in Escherichia coli strain BL21 Star (DE3)	726578	
5.4.99.18	recombinant enzyme expression	747253	
5.4.99.18	recombinant expression of N-terminally His-tagged enzyme	747257