The catalytic domain of avian sarcoma virus integrase: conformation of the active-site residues in the presence of divalent cations.
Bujacz, G., Jaskolski, M., Alexandratos, J., Wlodawer, A., Merkel, G., Katz, R.A., Skalka, A.M.(1996) Structure 4: 89-96
- PubMed: 8805516 
- DOI: https://doi.org/10.1016/s0969-2126(96)00012-3
- Primary Citation of Related Structures:  
1VSD, 1VSE, 1VSF - PubMed Abstract: 
Members of the structurally-related superfamily of enzymes that includes RNase H, RuvC resolvase, MuA transposase, and retroviral integrase require divalent cations for enzymatic activity. So far, cation positions are reported in the X-ray crystal structures of only two of these proteins, E. coli and human immunodeficiency virus 1 (HIV-1) RNase H. Details of the placement of metal ions in the active site of retroviral integrases are necessary for the understanding of the catalytic mechanism of these enzymes.
Organizational Affiliation: 
Macromolecular Structure Laboratory, NCI-Frederick Cancer Research and Development Center, ABL-Basic Research Program, Frederick, MD 21702, USA.