Macromolecule Content

• Total Structure Weight: 16.80 kDa 
• Atom Count: 1164 
• Modelled Residue Count: 142 
• Deposited Residue Count: 144 
• Unique protein chains: 1

2IL8

THREE-DIMENSIONAL STRUCTURE OF INTERLEUKIN 8 IN SOLUTION

• DOI: 10.2210/pdb2IL8/pdb
• BMRB: 280

• Classification: CYTOKINE
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 1990-03-08 Released: 1991-01-15 
• Deposition Author(s): Clore, G.M.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Submitted: 30 

Literature

Three-dimensional structure of interleukin 8 in solution.

Clore, G.M., Appella, E., Yamada, M., Matsushima, K., Gronenborn, A.M.

(1990) Biochemistry 29: 1689-1696

• PubMed: 2184886 
• DOI: 10.1021/bi00459a004
• Primary Citation of Related Structures:  
  1IL8, 2IL8


• PubMed Abstract: 
  

The solution structure of the interleukin 8 (IL-8) dimer has been solved by nuclear magnetic resonance (NMR) spectroscopy and hybrid distance geometry-dynamical simulated annealing calculations. The structure determination is based on a total of 1880 experimental distance restraints (of which 82 are intersubunit) and 362 torsion angle restraints (comprising phi, psi, and chi 1 torsion angles). A total of 30 simulated annealing structures were calculated, and the atomic rms distribution about the mean coordinate positions (excluding residues 1-5 of each subunit) is 0.41 +/- 0.08 A for the backbone atoms and 0.90 +/- 0.08 A for all atoms. The three-dimensional solution structure of the IL-8 dimer reveals a structural motif in which two symmetry-related antiparallel alpha-helices, approximately 24 A long and separated by about 14 A, lie on top of a six-stranded antiparallel beta-sheet platform derived from two three-stranded Greek keys, one from each monomer unit. The general architecture is similar to that of the alpha 1/alpha 2 domains of the human class I histocompatibility antigen HLA-A2. It is suggested that the two alpha-helices form the binding site for the cellular receptor and that the specificity of IL-8, as well as that of a number of related proteins involved in cell-specific chemotaxis, mediation of cell growth, and the inflammatory response, is achieved by the distinct distribution of charged and polar residues at the surface of the helices.

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Related Citations: 

• Determination of the Secondary Structure of Interleukin-8 by Nuclear Magnetic Resonance Spectroscopy
  Clore, G.M., Appella, E., Yamada, M., Matsushima, K., Gronenborn, A.M.
  (1989) J Biol Chem 264: 18907

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Organizational Affiliation: 

Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
INTERLEUKIN-8	A, B	72	Homo sapiens	Mutation(s): 0  Gene Names: POTENTIAL, CXCL8, IL8
Find proteins for P10145 (Homo sapiens) Explore P10145  Go to UniProtKB:  P10145
NIH Common Fund Data Resources
PHAROS:  P10145 GTEx:  ENSG00000169429

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Submitted: 30 
• OLDERADO: 2IL8 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1990-03-08 
• Released Date: 1991-01-15 
Deposition Author(s): Clore, G.M.

Revision History  

• Version 1.0: 1991-01-15
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance