IUBMB Enzyme Nomenclature


Accepted name: 2-amino-2'-deoxyadenylo-succinate synthase

Reaction: ATP + dGMP + L-aspartate = ADP + phosphate + 2-amino-2'-deoxy-N6-[(2S)-succino]adenylate

Glossary: dZTP = 2-amino-2'-deoxyadenosine 5'-triphosphate

Other name(s): purZ (gene name)

Systematic name: dGMP:L-aspartate ligase (ADP-forming)

Comments: The enzyme, characterized from a number of bacteriophages, participates in the biosynthesis of dZTP, which replaces dATP in the genome of these phages.

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number:


1. Zhou, Y., Xu, X., Wei, Y., Cheng, Y., Guo, Y., Khudyakov, I., Liu, F., He, P., Song, Z., Li, Z., Gao, Y., Ang, E.L., Zhao, H., Zhang, Y. and Zhao, S. A widespread pathway for substitution of adenine by diaminopurine in phage genomes. Science 372 (2021) 512-516. [PMID: 33926954]

2. Sleiman, D., Garcia, P.S., Lagune, M., Loc'h, J., Haouz, A., Taib, N., Rothlisberger, P., Gribaldo, S., Marliere, P. and Kaminski, P.A. A third purine biosynthetic pathway encoded by aminoadenine-based viral DNA genomes. Science 372 (2021) 516-520. [PMID: 33926955]

[EC created 2021]

Return to EC 6.3.4 home page
Return to EC 6.3 home page
Return to EC 6 home page
Return to Enzymes home page
Return to IUBMB Biochemical Nomenclature home page