ISDA

Deposition Date 2009-01-27

Release Date 2009-10-20

Last Version Date 2023-09-06

Entry Detail

PDB ID:

3G05

Keywords:

RNA BINDING PROTEIN

Title:

Crystal structure of N-terminal domain (2-550) of E.coli MnmG

Biological Source:

Source Organism:

Escherichia coli O157:H7 EDL933 (Taxon ID: 155864)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

3.49 Å

R-Value Free:

0.26

R-Value Work:

0.22

R-Value Observed:

0.22

Space Group:

P 31 2 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:tRNA uridine 5-carboxymethylaminomethyl modification enzyme mnmG
Gene (Uniprot):mnmG
Chain IDs:A, B
Chain Length:576
Number of Molecules:2
Biological Source:Escherichia coli O157:H7 EDL933

UniProt ID:Q8XAY0 Pfam ID:PF01134, PF21680

Ligand Molecules

SO4

Primary Citation

Structure-function analysis of Escherichia coli MnmG (GidA), a highly conserved tRNA-modifying enzyme.

Shi, R, Villarroya, M, Ruiz-Partida, R, Li, Y, Proteau, A, Prado, S, Moukadiri, I, Benitez-Paez, A, Lomas, R, Wagner, J, Matte, A, Velazquez-Campoy, A, Armengod, M.E, Cygler, M.Show

J.Bacteriol. 191 7614 7619 (2009)

PMID: 19801413 DOI: 10.1128/JB.00650-09

Abstact

The MnmE-MnmG complex is involved in tRNA modification. We have determined the crystal structure of Escherichia coli MnmG at 2.4-A resolution, mutated highly conserved residues with putative roles in flavin adenine dinucleotide (FAD) or tRNA binding and MnmE interaction, and analyzed the effects of these mutations in vivo and in vitro. Limited trypsinolysis of MnmG suggests significant conformational changes upon FAD binding.

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Primary Citation of related structures