1N26 Cytokine date Oct 22, 2002
title Crystal Structure Of The Extra-Cellular Domains Of Human Int Receptor Alpha Chain
authors J.N.Varghese, R.L.Moritz, M.Z.Lou, A.Van Donkelaar, H.Ji, N.Ivan K.M.Branson, N.E.Hall, R.J.Simpson
compound source
Molecule: Il-6 Receptor Alpha Chain
Chain: A
Fragment: Il-6r Extral-Cellular Domains
Synonym: Interleukin-6 Receptor Alpha Chain
Engineered: Yes
Organism_scientific: Homo Sapiens
Organism_common: Human
Organism_taxid: 9606
Gene: Il6r
Expression_system: Cricetulus Griseus
Expression_system_common: Chinese Hamster
Expression_system_taxid: 10029
Expression_system_strain: Cho
Expression_system_cell_line: Lec3.2.8.1
Expression_system_vector_type: Plasmid
Expression_system_plasmid: Pee14sil6rl325
symmetry Space Group: P 43 21 2
R_factor 0.220 R_Free 0.290
length a length b length c angle alpha angle beta angle gamma
51.130 51.130 303.388 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.40 Å
ligand BMA, CYS, MAN, NAG, NDG, SO4 enzyme
related structures by homologous chain: 1E4J, 1FNL
Primary referenceStructure of the extracellular domains of the human interleukin-6 receptor alpha -chain., Varghese JN, Moritz RL, Lou MZ, Van Donkelaar A, Ji H, Ivancic N, Branson KM, Hall NE, Simpson RJ, Proc Natl Acad Sci U S A 2002 Dec 10;99(25):15959-64. Epub 2002 Dec 2. PMID:12461182
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (60 Kb) [Save to disk]
  • Biological Unit Coordinates (1n26.pdb1.gz) 106 Kb
  • LPC: Ligand-Protein Contacts for 1N26
  • CSU: Contacts of Structural Units for 1N26
  • Likely Quarternary Molecular Structure file(s) for 1N26
  • Retrieve 1N26 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1N26 from S2C, [Save to disk]
  • View 1N26 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 1N26
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 1N26, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1n26a1, region A:1-93 [Jmol] [rasmolscript] [script source]
        - Domain d1n26a3, region A:196-299 [Jmol] [rasmolscript] [script source]
        - Domain d1n26a2, region A:94-195 [Jmol] [rasmolscript] [script source]
  • Fold representative 1n26 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: [1n26] [1n26_A]
  • SWISS-PROT database: [P08887]
  • Domain organization of [IL6RA_HUMAN] by SWISSPFAM
  • Domains found in 1N26: [FN3] [IGc2 ] by SMART
  • Other resources with information on 1N26
  • Community annotation for 1N26 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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