1NU4 Rna Binding Protein date Jan 30, 2003
title U1a Rna Binding Domain At 1.8 Angstrom Resolution Reveals A Organized C-Terminal Helix
authors P.B.Rupert, H.Xiao, A.R.Ferre-D'Amare
compound source
Molecule: U1a Rna Binding Domain
Chain: A, B
Fragment: U1a Rbd1
Synonym: U1 Snrnp A Protein
Engineered: Yes
Mutation: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Expression_system: Escherichia Coli
Expression_system_taxid: 562
symmetry Space Group: H 3 2
R_factor 0.203 R_Free 0.234
length a length b length c angle alpha angle beta angle gamma
91.819 91.819 120.448 90.00 90.00 120.00
method X-Ray Diffractionresolution 1.80 Å
ligand MG, MLA enzyme
note 1NU4 is a representative structure
related structures by homologous chain: 1URN
A, B

Primary referenceU1A RNA-binding domain at 1.8 A resolution., Rupert PB, Xiao H, Ferre-D'Amare AR, Acta Crystallogr D Biol Crystallogr 2003 Aug;59(Pt 8):1521-4. Epub 2003, Jul 23. PMID:12876372
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (42 Kb) [Save to disk]
  • Biological Unit Coordinates (1nu4.pdb1.gz) 19 Kb
  • Biological Unit Coordinates (1nu4.pdb2.gz) 19 Kb
  • Biological Unit Coordinates (1nu4.pdb3.gz) 105 Kb
  • Biological Unit Coordinates (1nu4.pdb4.gz) 54 Kb
  • Biological Unit Coordinates (1nu4.pdb5.gz) 53 Kb
  • Biological Unit Coordinates (1nu4.pdb6.gz) 36 Kb
  • Biological Unit Coordinates (1nu4.pdb7.gz) 36 Kb
  • LPC: Ligand-Protein Contacts for 1NU4
  • CSU: Contacts of Structural Units for 1NU4
  • Likely Quarternary Molecular Structure file(s) for 1NU4
  • Structure Factors (210 Kb)
  • Retrieve 1NU4 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1NU4 from S2C, [Save to disk]
  • Re-refined 1nu4 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1NU4 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 1NU4
  • 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 1NU4, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1nu4a_, region A [Jmol] [rasmolscript] [script source]
        - Domain d1nu4b_, region B [Jmol] [rasmolscript] [script source]
  • Fold representative 1nu4 from FSSP and Dali (Families of Structurally Similar Proteins)
  • 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: [1nu4_A] [1nu4_B] [1nu4]
  • SWISS-PROT database: [P09012]
  • Domain organization of [SNRPA_HUMAN] by SWISSPFAM
  • Domain found in 1NU4: [RRM ] by SMART
  • Other resources with information on 1NU4
  • Community annotation for 1NU4 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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