3EGZ	Rna	date	Sep 11, 2008
title	Crystal Structure Of An In Vitro Evolved Tetracycline Aptame Artificial Riboswitch
authors	H.Xiao, T.E.Edwards, A.R.Ferre-D'Amare
compound		source
Molecule: U1 Small Nuclear Ribonucleoprotein A Chain: A Synonym: U1 Snrnp Protein A, U1a Protein, U1-A Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Snrpa Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet
Molecule: Tetracycline Aptamer And Artificial Riboswitch Chain: B Engineered: Yes		Synthetic: Yes Other_details: In Vitro Evolved Aptamer
symmetry	Space Group: P 4 21 2	R_factor 0.212 R_Free 0.260
crystal cell	length a length b length c angle alpha angle beta angle gamma 120.835 120.835 55.279 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.20 Å
ligand	CTC, MG, MSE	enzyme
Gene Ontology	Chain Function Process Component A
Primary reference	Structural basis for specific, high-affinity tetracycline binding by an in vitro evolved aptamer and artificial riboswitch., Xiao H, Edwards TE, Ferre-D'Amare AR, Chem Biol. 2008 Oct 20;15(10):1125-37. PMID:18940672

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (54 Kb) [Save to disk] Biological Unit Coordinates (3egz.pdb1.gz) 180 Kb LPC: Ligand-Protein Contacts for 3EGZ CSU: Contacts of Structural Units for 3EGZ Likely Quarternary Molecular Structure file(s) for 3EGZ Structure Factors (317 Kb) Retrieve 3EGZ in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3EGZ from S2C, [Save to disk] Re-refined 3egz structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3EGZ 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 3EGZ

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 3EGZ, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3egz_A] [3egz_B] [3egz] SWISS-PROT database: [P09012] Domain organization of [SNRPA_HUMAN] by SWISSPFAM Domain found in 3EGZ: [RRM ] by SMART

Other resources with information on 3EGZ

Community annotation for 3EGZ at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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