ISDA: 1KOG

Deposition Date 2001-12-20

Release Date 2002-04-26

Last Version Date 2023-08-16

Entry Detail

PDB ID:

1KOG

Keywords:

LIGASE/RNA

Title:

Crystal structure of E. coli threonyl-tRNA synthetase interacting with the essential domain of its mRNA operator

Biological Source:

Source Organism:

Escherichia coli (Taxon ID: 562)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

3.50 Å

R-Value Free:

0.28

R-Value Work:

0.25

R-Value Observed:

0.25

Space Group:

P 1 2 1

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Threonyl-tRNA synthetase
Gene (Uniprot):thrS
Chain IDs:I (auth: A), J (auth: B), K (auth: C), L (auth: D), M (auth: E), N (auth: F), O (auth: G), P (auth: H)
Chain Length:401
Number of Molecules:8
Biological Source:Escherichia coli

UniProt ID:P0A8M3 Pfam ID:PF00587, PF03129 EC:6.1.1.3

Polymer Type:polyribonucleotide
Molecule:Threonyl-tRNA synthetase mRNA
Mutagens:U(-49)G, U(-48)G, U(-71)C, A(-15)G, A(-14)C, A(-13)C
Chain IDs:A (auth: I), B (auth: J), C (auth: K), D (auth: L), E (auth: M), F (auth: N), G (auth: O), H (auth: P)
Chain Length:37
Number of Molecules:8
Biological Source:

Ligand Molecules

TSB

Primary Citation

Structural basis of translational control by Escherichia coli threonyl tRNA synthetase.

Torres-Larios, A, Dock-Bregeon, A.C, Romby, P, Rees, B, Sankaranarayanan, R, Caillet, J, Springer, M, Ehresmann, C, Ehresmann, B, Moras, D.Show

Nat.Struct.Biol. 9 343 347 (2002)

PMID: 11953757

Abstact

Escherichia coli threonyl-tRNA synthetase (ThrRS) represses the translation of its own messenger RNA by binding to an operator located upstream of the initiation codon. The crystal structure of the complex between the core of ThrRS and the essential domain of the operator shows that the mRNA uses the recognition mode of the tRNA anticodon loop to initiate binding. The final positioning of the operator, upon which the control mechanism is based, relies on a characteristic RNA motif adapted to the enzyme surface. The finding of other thrS operators that have this conserved motif leads to a generalization of this regulatory mechanism to a subset of Gram-negative bacteria.

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Primary Citation of related structures

Abstact

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