The catalytic domain of human immunodeficiency virus integrase: ordered active site in the F185H mutant.Bujacz, G., Alexandratos, J., Qing, Z.L., Clement-Mella, C., Wlodawer, A.
(1996) FEBS Lett. 398: 175-178
- PubMed: 8977101
- PubMed Abstract:
- High-Resolution Structure of the Catalytic Domain of Avian Sarcoma Virus Integrase
Bujacz, G.,Jaskolski, M.,Alexandratos, J.,Wlodawer, A.,Merkel, G.,Katz, R.A.,Skalka, A.M.
(1995) J.Mol.Biol. 253: 333
- Crystal Structure of the Catalytic Domain of HIV-1 Integrase: Similarity to Other Polynucleotidyl Transferases
Dyda, F.,Hickman, A.B.,Jenkins, T.M.,Engelman, A.,Craigie, R.,Davies, D.R.
(1994) Science 266: 1981
We solved the structure and traced the complete active site of the catalytic domain of the human immunodeficiency virus type 1 integrase (HIV-1 IN) with the F185H mutation. The only previously available crystal structure, the F185K mutant of this dom ...
We solved the structure and traced the complete active site of the catalytic domain of the human immunodeficiency virus type 1 integrase (HIV-1 IN) with the F185H mutation. The only previously available crystal structure, the F185K mutant of this domain, lacks one of the catalytically important residues, E152, located in a stretch of 12 disordered residues [Dyda et al. (1994) Science 266, 1981-1986]. It is clear, however, that the active site of HIV-1 IN observed in either structure cannot correspond to that of the functional enzyme, since the cluster of three conserved carboxylic acids does not create a proper metal-binding site. The conformation of the loop was compared with two different conformations found in the catalytic domain of the related avian sarcoma virus integrase [Bujacz et al. (1995) J. Mol. Biol. 253, 333-346]. Flexibility of the active site region of integrases may be required in order for the enzyme to assume a functional conformation in the presence of substrate and/or cofactors.
Macromolecular Structure Laboratory, NCI-Frederick Cancer Research and Development Center, Frederick, MD 21702, USA.