3CUN Rna Rna Binding date Apr 16, 2008
title Aminoacyl-Trna Synthetase Ribozyme
authors H.Xiao, H.Murakami, H.Suga, A.R.Ferre-D'Amare
compound source
Molecule: U1 Small Nuclear Ribonucleoprotein A
Chain: A, B
Fragment: Unp Residues 1-98
Synonym: U1 Snrnp Protein A, U1a Protein, U1-A
Engineered: Yes
Mutation: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Snrpa
Expression_system: Escherichia Coli

Molecule: Rna (92-Mer)
Chain: C, D
Engineered: Yes
Other_details: Flexizyme

Expression_system: Cell-Free Synthesis
symmetry Space Group: C 1 2 1
R_factor 0.252 R_Free 0.303
length a length b length c angle alpha angle beta angle gamma
191.368 48.076 90.645 90.00 93.50 90.00
method X-Ray Diffractionresolution 3.00 Å
ligand CO, GTP, K, MG, MSE enzyme
A, B

Primary referenceStructural basis of specific tRNA aminoacylation by a small in vitro selected ribozyme., Xiao H, Murakami H, Suga H, Ferre-D'Amare AR, Nature. 2008 Jun 11;. PMID:18548004
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (114 Kb) [Save to disk]
  • Biological Unit Coordinates (3cun.pdb1.gz) 55 Kb
  • Biological Unit Coordinates (3cun.pdb2.gz) 55 Kb
  • LPC: Ligand-Protein Contacts for 3CUN
  • CSU: Contacts of Structural Units for 3CUN
  • Likely Quarternary Molecular Structure file(s) for 3CUN
  • Structure Factors (115 Kb)
  • Retrieve 3CUN in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 3CUN from S2C, [Save to disk]
  • Re-refined 3cun structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 3CUN 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 3CUN
  • 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 3CUN, from MSDmotif at EBI
  • Fold representative 3cun from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [3cun_D] [3cun] [3cun_A] [3cun_B] [3cun_C]
  • SWISS-PROT database: [P09012]
  • Domain organization of [SNRPA_HUMAN] by SWISSPFAM
  • Domain found in 3CUN: [RRM ] by SMART
  • Other resources with information on 3CUN
  • Community annotation for 3CUN 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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