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
crystal cell	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 Diffraction	resolution	2.40 Å
ligand	BMA, CYS, MAN, NAG, NDG, SO4	enzyme
related structures	by homologous chain: 1E4J, 1FNL
Gene Ontology	Chain Function Process Component A
Primary reference	Structure 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] (59 Kb) [Save to disk] Biological Unit Coordinates (1n26.pdb1.gz) 104 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

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server 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] 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)

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