2itg
From Proteopedia
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| , resolution 2.60Å | |||||||
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| Sites: | |||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
CATALYTIC DOMAIN OF HIV-1 INTEGRASE: ORDERED ACTIVE SITE IN THE F185H CONSTRUCT
Overview
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.
About this Structure
2ITG is a Single protein structure of sequence from Human immunodeficiency virus 1. Full crystallographic information is available from OCA.
Reference
The catalytic domain of human immunodeficiency virus integrase: ordered active site in the F185H mutant., Bujacz G, Alexandratos J, Qing ZL, Clement-Mella C, Wlodawer A, FEBS Lett. 1996 Dec 2;398(2-3):175-8. PMID:8977101
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