ISDA

Deposition Date 2009-09-16

Release Date 2014-07-09

Last Version Date 2023-09-20

Entry Detail

PDB ID:

4V7G

Keywords:

TRANSFERASE

Title:

Crystal Structure of Lumazine Synthase from Bacillus Anthracis

Biological Source:

Source Organism:

Bacillus Anthracis (Taxon ID: 1392)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

3.50 Å

R-Value Free:

0.28

R-Value Work:

0.23

R-Value Observed:

0.23

Space Group:

P 21 21 2

Download Validation Report

Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:6,7-dimethyl-8-ribityllumazine synthase
Gene (Uniprot):ribH
Chain IDs:A (auth: AA), B (auth: AB), C (auth: AC), D (auth: AD), E (auth: AE), F (auth: AF), G (auth: AG), H (auth: AH), I (auth: AI), J (auth: AJ), K (auth: AK), L (auth: AL), M (auth: AM), N (auth: AN), O (auth: AO), P (auth: AP), Q (auth: AQ), R (auth: AR), S (auth: AS), T (auth: AT), U (auth: AU), V (auth: AV), W (auth: AW), X (auth: AX), Y (auth: AY), Z (auth: AZ), AA (auth: A1), BA (auth: A2), CA (auth: A3), DA (auth: A4), EA (auth: BA), FA (auth: BB), GA (auth: BC), HA (auth: BD), IA (auth: BE), JA (auth: BF), KA (auth: BG), LA (auth: BH), MA (auth: BI), NA (auth: BJ), OA (auth: BK), PA (auth: BL), QA (auth: BM), RA (auth: BN), SA (auth: BO), TA (auth: BP), UA (auth: BQ), VA (auth: BR), WA (auth: BS), XA (auth: BT), YA (auth: BU), ZA (auth: BV), AB (auth: BW), BB (auth: BX), CB (auth: BY), DB (auth: BZ), EB (auth: B1), FB (auth: B2), GB (auth: B3), HB (auth: B4), IB (auth: CA), JB (auth: CB), KB (auth: CC), LB (auth: CD), MB (auth: CE), NB (auth: CF), OB (auth: CG), PB (auth: CH), QB (auth: CI), RB (auth: CJ), SB (auth: CK), TB (auth: CL), UB (auth: CM), VB (auth: CN), WB (auth: CO), XB (auth: CP), YB (auth: CQ), ZB (auth: CR), AC (auth: CS), BC (auth: CT), CC (auth: CU), DC (auth: CV), EC (auth: CW), FC (auth: CX), GC (auth: CY), HC (auth: CZ), IC (auth: C1), JC (auth: C2), KC (auth: C3), LC (auth: C4)
Chain Length:153
Number of Molecules:90
Biological Source:Bacillus Anthracis

UniProt ID:Q81MB5 Pfam ID:PF00885

Ligand Molecules

PO4

Primary Citation

Structural study and thermodynamic characterization of inhibitor binding to lumazine synthase from Bacillus anthracis.

Morgunova, E, Illarionov, B, Saller, S, Popov, A, Sambaiah, T, Bacher, A, Cushman, M, Fischer, M, Ladenstein, R.Show

Acta Crystallogr.,Sect.D 66 1001 1011 (2010)

PMID: 20823551 DOI: 10.1107/S0907444910029690

Abstact

The crystal structure of lumazine synthase from Bacillus anthracis was solved by molecular replacement and refined to R(cryst) = 23.7% (R(free) = 28.4%) at a resolution of 3.5 A. The structure reveals the icosahedral symmetry of the enzyme and specific features of the active site that are unique in comparison with previously determined orthologues. The application of isothermal titration calorimetry in combination with enzyme kinetics showed that three designed pyrimidine derivatives bind to lumazine synthase with micromolar dissociation constants and competitively inhibit the catalytic reaction. Structure-based modelling suggested the binding modes of the inhibitors in the active site and allowed an estimation of the possible contacts formed upon binding. The results provide a structural framework for the design of antibiotics active against B. anthracis.

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Primary Citation of related structures