ISDA

Entry Detail

PDB ID:

2IT4

Keywords:

LYASE

Title:

X ray structure of the complex between Carbonic Anhydrase I and the phosphonate antiviral drug foscarnet

Biological Source:

Source Organism:

Homo sapiens

PDB Version:

Deposition Date:

2006-10-19

Release Date:

2007-09-11

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.00 Å

R-Value Free:

0.31

R-Value Work:

0.24

R-Value Observed:

0.24

Space Group:

P 21 21 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Carbonic anhydrase 1
Chain IDs:A, B
Chain Length:256
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:P00915 Pfam ID:PF00194 EC:4.2.1.1

Ligand Molecules

PPF

Primary Citation

Phosph(on)ate as a zinc-binding group in metalloenzyme inhibitors: X-ray crystal structure of the antiviral drug foscarnet complexed to human carbonic anhydrase I.

Temperini, C, Innocenti, A, Guerri, A, Scozzafava, A, Rusconi, S, Supuran, C.T.Show

Bioorg.Med.Chem.Lett. 17 2210 2215 (2007)

PMID: 17314045 DOI: 10.1016/j.bmcl.2007.01.113

Abstact

Foscarnet (phosphonoformate trisodium salt), an antiviral used for the treatment of HIV and herpes virus infections, also acts as an activator or inhibitor of the metalloenzyme carbonic anhydrase (CA, EC 4.2.1.1). Interaction of the drug with 11 CA isozymes has been investigated kinetically, and the X-ray structure of its adduct with isoform I (hCA I-foscarnet complex) has been resolved. The first CA inhibitor possessing a phosphonate zinc-binding group is thus evidenced, together with the factors governing recognition of such small molecules by a metalloenzyme active site. Foscarnet is also a clear-cut example of modulator of an enzyme activity which can act either as an activator or inhibitor of a CA isozyme.

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Primary Citation of related structures