5.4.99.18	1268	Purification and characterization of the purE, purK, and purC gene products: identification of a previously unrecognized energy requirement in the purine biosynthetic pathway	Biochemistry	31	5022-5032	1992	Escherichia coli	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=1534690&form=6&db=m	
5.4.99.18	661977	Identification and sequence analysis of Escherichia coli purE and purK genes encoding 5'-phosphoribosyl-5-amino-4-imidazole carboxylase for de novo purine biosynthesis	J. Bacteriol.	171	198-204	1989	Escherichia coli	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=2644189&form=6&db=m	
5.4.99.18	661977	Identification and sequence analysis of Escherichia coli purE and purK genes encoding 5'-phosphoribosyl-5-amino-4-imidazole carboxylase for de novo purine biosynthesis	J. Bacteriol.	171	198-204	1989	Escherichia coli NK6051	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=2644189&form=6&db=m	
5.4.99.18	661050	N5-carboxyaminoimidazole ribonucleotide: evidence for a new intermediate and two new enzymatic activities in the de novo purine biosynthetic pathway of Escherichia coli	Biochemistry	33	2269-2278	1994	Escherichia coli	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=8117684&form=6&db=m	
5.4.99.18	661776	Genomic organization of purK and purE in Brevibacterium ammoniagenes ATCC 6872: purE locus provides a clue for genomic evolution	FEMS Microbiol. Lett.	137	265-268	1996	Corynebacterium ammoniagenes	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=8998996&form=6&db=m	
5.4.99.18	661777	Identification and sequence analysis of Sulfolobus solfataricus purE and purK genes	FEMS Microbiol. Lett.	154	173-180	1997	Saccharolobus solfataricus	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=9311113&form=6&db=m	
5.4.99.18	661777	Identification and sequence analysis of Sulfolobus solfataricus purE and purK genes	FEMS Microbiol. Lett.	154	173-180	1997	Saccharolobus solfataricus DSM 1617	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=9311113&form=6&db=m	
5.4.99.18	649890	Evidence for the Direct Transfer of the carboxylate of N5-carboxyaminoimidazole ribonucleotide (N5-CAIR) to generate 4-carboxy-5-aminoimidazole ribonucleotide catalyzed by Escherichia coli PurE, an N5-CAIR mutase	Biochemistry	38	3012-3018	1999	Escherichia coli	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=10074353&form=6&db=m	
5.4.99.18	663416	Crystal structure of Escherichia coli PurE, an unusual mutase in the purine biosynthetic pathway	Structure	7	1395-1406	1999	Escherichia coli	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=10574791&form=6&db=m	
5.4.99.18	663353	Crystal structure of a phosphoribosylaminoimidazole mutase PurE from Thermotoga maritima at 1.77 A resolution	Proteins	55	474-478	2004	Thermotoga maritima	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=15048837&form=6&db=m