1QRT Ligase Rna date Jun 14, 1996
title Glutaminyl-Trna Synthetase Mutant D235g Complexed With Gluta Transfer Rna
authors J.G.Arnez, T.A.Steitz
compound source
Molecule: Trnagln2
Chain: B
Synonym: Glutamine Transfer Rna
Engineered: Yes
Organism_scientific: Escherichia Coli
Organism_taxid: 562
Strain: K-12
Variant: Deltah1deltatrp
Gene: Trnagln2
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_plasmid: Prs3 (Plc28 Derivative)
Expression_system_gene: Trnagln2
Other_details: Lambda Pl Promoter

Molecule: Protein (Glutaminyl-Trna Synthetase (E.C.
Chain: A
Synonym: Glutaminyl-Trna Ligase
Engineered: Yes
Mutation: Yes

Organism_scientific: Escherichia Coli
Organism_taxid: 562
Strain: X3r2 (Glns Deletion Strain)
Gene: Glns10
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_plasmid: Prs4 (Derivative Of Pbr322)
Expression_system_gene: Glns10
Other_details: Glns Promoter (No Overexpression)
symmetry Space Group: C 2 2 21
R_factor 0.216 R_Free NULL
length a length b length c angle alpha angle beta angle gamma
243.500 93.700 115.900 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.70 Å
ligand ATP enzyme Ligase E.C. BRENDA
related structures by homologous chain: 1EXD, 1O0B

Primary referenceCrystal structures of three misacylating mutants of Escherichia coli glutaminyl-tRNA synthetase complexed with tRNA(Gln) and ATP., Arnez JG, Steitz TA, Biochemistry 1996 Nov 26;35(47):14725-33. PMID:8942633
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (145 Kb) [Save to disk]
  • Biological Unit Coordinates (1qrt.pdb1.gz) 141 Kb
  • LPC: Ligand-Protein Contacts for 1QRT
  • CSU: Contacts of Structural Units for 1QRT
  • Likely Quarternary Molecular Structure file(s) for 1QRT
  • Structure Factors (266 Kb)
  • Retrieve 1QRT in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1QRT from S2C, [Save to disk]
  • Re-refined 1qrt structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1QRT in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
  • Visual 3D analysis of 1QRT
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 1QRT, from MSDmotif at EBI
  • Genome occurence of 1QRT's fold from GeneCensus
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1qrta1, region A:339-547 [Jmol] [rasmolscript] [script source]
        - Domain d1qrta2, region A:8-338 [Jmol] [rasmolscript] [script source]
  • Fold representative 1qrt from FSSP and Dali (Families of Structurally Similar Proteins)
  • Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH
  • Summaries and structural analyses of PDB data files from PDBSum
  • Identification of Protein Pockets & Cavities at CASTp
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1qrt] [1qrt_B] [1qrt_A]
  • SWISS-PROT database: [P00962]
  • Domain organization of [SYQ_ECOLI] by SWISSPFAM
  • Other resources with information on 1QRT
  • Community annotation for 1QRT at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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