ISDA: 2G36

Deposition Date 2006-02-17

Release Date 2006-03-28

Last Version Date 2024-04-03

Entry Detail

PDB ID:

2G36

Keywords:

LIGASE

Title:

Crystal structure of Tryptophanyl-tRNA synthetase (EC 6.1.1.2) (Tryptophan-tRNA ligase)(TrpRS) (tm0492) from THERMOTOGA MARITIMA at 2.50 A resolution

Biological Source:

Source Organism:

Thermotoga maritima (Taxon ID: 2336)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.50 Å

R-Value Free:

0.25

R-Value Work:

0.19

R-Value Observed:

0.19

Space Group:

C 2 2 21

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Macromolecular Entities

Structures with similar UniProt ID

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Tryptophanyl-tRNA synthetase
Gene (Uniprot):trpS
Chain IDs:A
Chain Length:340
Number of Molecules:1
Biological Source:Thermotoga maritima

UniProt ID:Q9WYW2 Pfam ID:PF00579

Ligand Molecules

SF4

TRP

Primary Citation

Structure of a tryptophanyl-tRNA synthetase containing an iron-sulfur cluster.

Han, G.W, Yang, X.L, McMullan, D, Chong, Y.E, Krishna, S.S, Rife, C.L, Weekes, D, Brittain, S.M, Abdubek, P, Ambing, E, Astakhova, T, Axelrod, H.L, Carlton, D, Caruthers, J, Chiu, H.J, Clayton, T, Duan, L, Feuerhelm, J, Grant, J.C, Grzechnik, S.K, Jaroszewski, L, Jin, K.K, Klock, H.E, Knuth, M.W, Kumar, A, Marciano, D, Miller, M.D, Morse, A.T, Nigoghossian, E, Okach, L, Paulsen, J, Reyes, R, van den Bedem, H, White, A, Wolf, G, Xu, Q, Hodgson, K.O, Wooley, J, Deacon, A.M, Godzik, A, Lesley, S.A, Elsliger, M.A, Schimmel, P, Wilson, I.A.Show

Acta Crystallogr.,Sect.F 66 1326 1334 (2010)

PMID: 20944229 DOI: 10.1107/S1744309110037619

Abstact

A novel aminoacyl-tRNA synthetase that contains an iron-sulfur cluster in the tRNA anticodon-binding region and efficiently charges tRNA with tryptophan has been found in Thermotoga maritima. The crystal structure of TmTrpRS (tryptophanyl-tRNA synthetase; TrpRS; EC 6.1.1.2) reveals an iron-sulfur [4Fe-4S] cluster bound to the tRNA anticodon-binding (TAB) domain and an L-tryptophan ligand in the active site. None of the other T. maritima aminoacyl-tRNA synthetases (AARSs) contain this [4Fe-4S] cluster-binding motif (C-x₂₂-C-x₆-C-x₂-C). It is speculated that the iron-sulfur cluster contributes to the stability of TmTrpRS and could play a role in the recognition of the anticodon.

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Primary Citation of related structures