ISDA

Deposition Date 2006-11-08

Release Date 2006-11-21

Last Version Date 2023-10-25

Entry Detail

PDB ID:

2NTN

Keywords:

OXIDOREDUCTASE

Title:

Crystal structure of MabA-C60V/G139A/S144L

Biological Source:

Source Organism:

Mycobacterium tuberculosis H37Rv (Taxon ID: 83332)

Host Organism:

Escherichia coli BL21(DE3)

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.30 Å

R-Value Free:

0.23

R-Value Work:

0.17

R-Value Observed:

0.18

Space Group:

C 1 2 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:3-oxoacyl-[acyl-carrier-protein] reductase
Mutations:C60V, G139A, S144L
Chain IDs:A, B
Chain Length:267
Number of Molecules:2
Biological Source:Mycobacterium tuberculosis H37Rv

UniProt ID:P9WGT3 Pfam ID:PF13561

Primary Citation

Lack of dynamics in the MabA active site kills the enzyme activity: practical consequences for drug-design studies

Poncet-Montange, G, Ducasse-Cabanot, S, Quemard, A, Labesse, G, Cohen-Gonsaud, M.Show

ACTA CRYSTALLOGR.,SECT.D 63 923 925 (2007)

PMID: 17642518 DOI: 10.1107/S0907444907024158

Abstact

The MabA protein from Mycobacterium tuberculosis is a validated drug target. Previous structural studies of this protein showed dynamic behaviour in the catalytic site and described motion between an open 'active' holo form (with NADP) and a closed 'inactive' apo form (without NADP). Here, a mutation (G139A) is reported that leads to complete protein inactivation and freezes the catalytic site into its closed form, even in the presence of the cofactor. This observation suggests a new way to develop anti-MabA drugs via protein stabilization of the 'inactive' form.

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Primary Citation of related structures