1B23	Gene Regulation Rna	date	Dec 04, 1998
title	E. Coli Cysteinyl-Trna And T. Aquaticus Elongation Factor Ef Ternary Complex
authors	P.Nissen, M.Kjeldgaard, S.Thirup, J.Nyborg
compound		source
Molecule: Cysteinyl Trna Chain: R Synonym: Cys-Trna Engineered: Yes Other_details: Aminoacyl Link Between A76 And Cys77		Organism_scientific: Escherichia Coli Organism_taxid: 562
Molecule: Elongation Factor Tu Chain: P Synonym: Ef-Tu Engineered: Yes		Organism_scientific: Thermus Aquaticus Organism_taxid: 271 Strain: Yt-1 Gene: Tufa Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: F 2 2 2	R_factor 0.206 R_Free 0.263
crystal cell	length a length b length c angle alpha angle beta angle gamma 126.750 132.980 154.880 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.60 Å
ligand	4SU, 5MU, CYS, GNP, H2U, MG, MIA, PSU, SO4	enzyme
related structures	by homologous chain: 1EFT, 1TTT
Gene Ontology	Chain Function Process Component P
Primary reference	The crystal structure of Cys-tRNACys-EF-Tu-GDPNP reveals general and specific features in the ternary complex and in tRNA., Nissen P, Thirup S, Kjeldgaard M, Nyborg J, Structure Fold Des 1999 Feb 15;7(2):143-56. PMID:10368282

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (108 Kb) [Save to disk] Biological Unit Coordinates (1b23.pdb1.gz) 101 Kb LPC: Ligand-Protein Contacts for 1B23 CSU: Contacts of Structural Units for 1B23 Likely Quarternary Molecular Structure file(s) for 1B23 Structure Factors (154 Kb) Retrieve 1B23 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1B23 from S2C, [Save to disk] Re-refined 1b23 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1B23 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 1B23

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 3D motif for 1B23, from MSDmotif at EBI Structure summary from SCOR (Structural Classification of RNA) Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1b23p3, region P:1-212 [Jmol] [rasmolscript] [script source]     - Domain d1b23p1, region P:213-312 [Jmol] [rasmolscript] [script source]     - Domain d1b23p2, region P:313-405 [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: [1b23] [1b23_R] [1b23_P] SWISS-PROT database: [Q01698] Domain organization of [EFTU_THEAQ] by SWISSPFAM

Other resources with information on 1B23

Community annotation for 1B23 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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