ISDA

Deposition Date 2010-07-08

Release Date 2010-09-01

Last Version Date 2023-12-20

Entry Detail

PDB ID:

2XKJ

Keywords:

ISOMERASE

Title:

CRYSTAL STRUCTURE OF CATALYTIC CORE OF A. BAUMANNII TOPO IV (PARE- PARC FUSION TRUNCATE)

Biological Source:

Source Organism:

ACINETOBACTER BAUMANNII (Taxon ID: 470)

Host Organism:

ESCHERICHIA COLI

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.20 Å

R-Value Free:

0.21

R-Value Work:

0.16

R-Value Observed:

0.16

Space Group:

C 1 2 1

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:TOPOISOMERASE IV
Gene (Uniprot):parC
Chain IDs:A (auth: E)
Chain Length:767
Number of Molecules:1
Biological Source:ACINETOBACTER BAUMANNII

UniProt ID:B0VP98 Pfam ID:PF00521

Ligand Molecules

GOL

SO4

Primary Citation

Structural Basis of Quinolone Inhibition of Type Iia Topoisomerases and Target-Mediated Resistance

Wohlkonig, A, Chan, P.F, Fosberry, A.P, Homes, P, Huang, J, Kranz, M, Leydon, V.R, Miles, T.J, Pearson, N.D, Perera, R.L, Shillings, A.J, Gwynn, M.N, Bax, B.D.Show

Nat.Struct.Mol.Biol. 17 1152 ? (2010)

PMID: 20802486 DOI: 10.1038/NSMB.1892

Abstact

Quinolone antibacterials have been used to treat bacterial infections for over 40 years. A crystal structure of moxifloxacin in complex with Acinetobacter baumannii topoisomerase IV now shows the wedge-shaped quinolone stacking between base pairs at the DNA cleavage site and binding conserved residues in the DNA cleavage domain through chelation of a noncatalytic magnesium ion. This provides a molecular basis for the quinolone inhibition mechanism, resistance mutations and invariant quinolone antibacterial structural features.

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Primary Citation of related structures