4FI9 Protein Binding date Jun 08, 2012
title Structure Of Human Sun-Kash Complex
authors W.J.Wang, Z.B.Shi
compound source
Molecule: Sun Domain-Containing Protein 2
Chain: A
Fragment: Sun Domain (Unp Residues 523-717)
Synonym: Protein Unc-84 Homolog B, Rab5-Interacting Protein Sad1unc-84 Protein-Like 2;
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Sun2, Frigg, Kiaa0668, Rab5ip, Unc84b
Expression_system: Escherichia Coli
Expression_system_taxid: 469008
Expression_system_strain: Bl21 (De3)
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pet21b

Molecule: Nesprin-2
Chain: B
Fragment: Kash Domain (Unp Residues 6872-6883)
Synonym: Nuclear Envelope Spectrin Repeat Protein 2, Nucleu Actin Connecting Element Protein, Protein Nuance, Synaptic Envelope Protein 2, Syne-2;
Engineered: Yes

Synthetic: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Other_details: This Sequence Occurs Naturally In Humans.
symmetry Space Group: H 3 2
R_factor 0.241 R_Free 0.310
length a length b length c angle alpha angle beta angle gamma
79.835 79.835 280.221 90.00 90.00 120.00
method X-Ray Diffractionresolution 3.05 Å


Primary referenceStructural insights into SUN-KASH complexes across the nuclear envelope., Wang W, Shi Z, Jiao S, Chen C, Wang H, Liu G, Wang Q, Zhao Y, Greene MI, Zhou Z, Cell Res. 2012 Oct;22(10):1440-52. doi: 10.1038/cr.2012.126. Epub 2012 Sep 4. PMID:22945352
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (72 Kb) [Save to disk]
  • Biological Unit Coordinates (4fi9.pdb1.gz) 199 Kb
  • CSU: Contacts of Structural Units for 4FI9
  • Structure Factors (102 Kb)
  • Retrieve 4FI9 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 4FI9 from S2C, [Save to disk]
  • Re-refined 4fi9 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 4FI9 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 4FI9
  • 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 4FI9, from MSDmotif at EBI
  • Fold representative 4fi9 from FSSP and Dali (Families of Structurally Similar Proteins)
  • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [4fi9_A] [4fi9_B] [4fi9]
  • SWISS-PROT database:
  • Domain organization of by SWISSPFAM
  • Other resources with information on 4FI9
  • Community annotation for 4FI9 at PDBWiki (http://pdbwiki.org)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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