3IWN Rna Rna Binding Protein date Sep 02, 2009
title Co-Crystal Structure Of A Bacterial C-Di-Gmp Riboswitch
authors N.Kulshina, N.J.Baird, A.R.Ferre-D'Amare
compound source
Molecule: C-Di-Gmp Riboswitch
Chain: A, B
Engineered: Yes
Synthetic: Yes
Other_details: In Vitro Transcription

Molecule: U1 Small Nuclear Ribonucleoprotein A
Chain: C, D
Fragment: Unp Residues 6-96, Rrm 1 Domain
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, U1a
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_strain: Bl21(De3)
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pt7
symmetry Space Group: P 21 21 21
R_factor 0.222 R_Free 0.292
length a length b length c angle alpha angle beta angle gamma
31.800 91.000 280.100 90.00 90.00 90.00
method X-Ray Diffractionresolution 3.20 Å
ligand C2E enzyme
note 3IWN (Molecule of the Month:pdb130)
D, C

Primary referenceRecognition of the bacterial second messenger cyclic diguanylate by its cognate riboswitch., Kulshina N, Baird NJ, Ferre-D'Amare AR, Nat Struct Mol Biol. 2009 Dec;16(12):1212-7. Epub 2009 Nov 8. PMID:19898478
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (114 Kb) [Save to disk]
  • Biological Unit Coordinates (3iwn.pdb1.gz) 55 Kb
  • Biological Unit Coordinates (3iwn.pdb2.gz) 55 Kb
  • LPC: Ligand-Protein Contacts for 3IWN
  • CSU: Contacts of Structural Units for 3IWN
  • Structure Factors (80 Kb)
  • Retrieve 3IWN in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 3IWN from S2C, [Save to disk]
  • Re-refined 3iwn structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 3IWN 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 3IWN
  • 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 3IWN, from MSDmotif at EBI
  • Fold representative 3iwn from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [3iwn_B] [3iwn] [3iwn_C] [3iwn_A] [3iwn_D]
  • SWISS-PROT database: [P09012]
  • Domain organization of [SNRPA_HUMAN] by SWISSPFAM
  • Domain found in 3IWN: [RRM ] by SMART
  • Other resources with information on 3IWN
  • Community annotation for 3IWN 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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