TABLE 2.

Comparison of homologous Pur proteins

Origin of Pur homolog	% Identity to L. lactis proteina
	PurD	PurE	PurKb
B. subtilis	54	61	45
E. coli	49	59	30
S. cerevisiae	39	52	34

^aPercent identical amino acid residues after alignment of the deduced amino acid sequence of the indicated L. lactis Pur proteins with homologous sequences. Accession numbers for B. subtilis, E. coli, and S. cerevisiae sequences, respectively, are as follows: for PurD, P12039, P15640, and P07244; for PurE, P12044, P09028, and P21264; and for PurK, P12045, P09029, and P21264. 

^bThe amino acid sequence deduced from L. lactis purK′ is not complete.