3DI2	Cytokine Cytokine Receptor	date	Jun 19, 2008
title	Crystal Structure Of The Complex Of Human Interleukin-7 With Unglycosylated Human Interleukin-7 Receptor Alpha Ectodomai
authors	C.A.Mcelroy, J.A.Dohm, S.T.R.Walsh
compound		source
Molecule: Interleukin-7 Chain: A, C Fragment: Unp Residues 26 To 177 Synonym: Il-7 Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Il7 Expression_system: Escherichia Coli Expression_system_strain: Bl21(De3) Codon Plus Rp Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet-15b
Molecule: Interleukin-7 Receptor Subunit Alpha Chain: B, D Fragment: Unp Residues 21 To 239 (Ligand Binding Ectodomain Synonym: Il-7r-Alpha, Cd127 Antigen, Cdw127 Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Il7r Expression_system: Escherichia Coli Expression_system_strain: Bl21(De3) Codon Plus Rp Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet-15b
symmetry	Space Group: P 1 21 1	R_factor 0.212 R_Free 0.267
crystal cell	length a length b length c angle alpha angle beta angle gamma 47.202 113.021 87.534 90.00 105.10 90.00
method	X-Ray Diffraction	resolution	2.70 Å
ligand	1PE	enzyme
note	3DI2 is a representative structure
Gene Ontology	Chain Function Process Component A, C D, B
Primary reference	Structural and Biophysical Studies of the Human IL-7/IL-7Ralpha Complex., McElroy CA, Dohm JA, Walsh ST, Structure. 2009 Jan;17(1):54-65. PMID:19141282

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (104 Kb) [Save to disk] Biological Unit Coordinates (3di2.pdb1.gz) 51 Kb Biological Unit Coordinates (3di2.pdb2.gz) 48 Kb LPC: Ligand-Protein Contacts for 3DI2 CSU: Contacts of Structural Units for 3DI2 Likely Quarternary Molecular Structure file(s) for 3DI2 Structure Factors (139 Kb) Retrieve 3DI2 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3DI2 from S2C, [Save to disk] Re-refined 3di2 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 3DI2 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 3DI2

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 3D motif for 3DI2, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1m3di2, region I:115-226 [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3di2] [3di2_A] [3di2_B] [3di2_C] [3di2_D] SWISS-PROT database: [P16871] [P13232] Domain organization of [IL7RA_HUMAN] [IL7_HUMAN] by SWISSPFAM Domain found in 3DI2: [IL7 ] by SMART

Other resources with information on 3DI2

Community annotation for 3DI2 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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