1EXD	Ligase Rna	date	May 02, 2000
title	Crystal Structure Of A Tight-Binding Glutamine Trna Bound To Aminoacyl Trna Synthetase
authors	T.L.Bullock, L.D.Sherlin, J.J.Perona
compound		source
Molecule: Glutamine Trna Aptamer Chain: B Synonym: Trna(Gln) Engineered: Yes Mutation: Yes		Synthetic: Yes Other_details: Product Of Runoff T7 Polymerase Transcriptio Synthetic Dna Template;
Molecule: Glutaminyl-Trna Synthetase Chain: A Synonym: Glnrs, Glutamine-Trna Ligase Ec: 6.1.1.18 Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: C 2 2 21	R_factor 0.216 R_Free 0.289
crystal cell	length a length b length c angle alpha angle beta angle gamma 236.940 93.980 113.910 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.70 Å
ligand	A, SO4	enzyme	Ligase E.C.6.1.1.18 BRENDA
related structures	by homologous chain: 1O0C, 1QRT
Gene Ontology	Chain Function Process Component A
Primary reference	Tertiary core rearrangements in a tight binding transfer RNA aptamer., Bullock TL, Sherlin LD, Perona JJ, Nat Struct Biol 2000 Jun;7(6):497-504. PMID:10881199

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (124 Kb) [Save to disk] Biological Unit Coordinates (1exd.pdb1.gz) 119 Kb LPC: Ligand-Protein Contacts for 1EXD CSU: Contacts of Structural Units for 1EXD Likely Quarternary Molecular Structure file(s) for 1EXD Retrieve 1EXD in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1EXD from S2C, [Save to disk]

View 1EXD 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 1EXD

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1EXD, from MSDmotif at EBI Structure summary from SCOR (Structural Classification of RNA) Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1exda1, region A:339-547 [Jmol] [rasmolscript] [script source]     - Domain d1exda2, region A:8-338 [Jmol] [rasmolscript] [script source] 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: [1exd_B] [1exd_A] [1exd] SWISS-PROT database: [P00962] Domain organization of [SYQ_ECOLI] by SWISSPFAM

Other resources with information on 1EXD

Community annotation for 1EXD at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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