2.3.2.1	487790	Further studies on the biosynthesis of gamma-glutamyl peptides by transfer reactions	J. Biol. Chem.	212	427-438	1955	Bacillus subtilis	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=13233245&form=6&db=m	
2.3.2.1	487791	Reference values for selected enzyme activities in serum from healthy human neonates	Clin. Biochem.	29	599-602	1996	Homo sapiens	http://www.ncbi.nlm.nih.gov/htbin-post/Entrez/query?uid=8939410&form=6&db=m