1il8

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THREE-DIMENSIONAL STRUCTURE OF INTERLEUKIN 8 IN SOLUTION

Structural highlights

1il8 is a 2 chain structure with sequence from Homo sapiens. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:Solution NMR, 1 model
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

IL8_HUMAN IL-8 is a chemotactic factor that attracts neutrophils, basophils, and T-cells, but not monocytes. It is also involved in neutrophil activation. It is released from several cell types in response to an inflammatory stimulus. IL-8(6-77) has a 5-10-fold higher activity on neutrophil activation, IL-8(5-77) has increased activity on neutrophil activation and IL-8(7-77) has a higher affinity to receptors CXCR1 and CXCR2 as compared to IL-8(1-77), respectively.[1] [2] [3]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

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.

Three-dimensional structure of interleukin 8 in solution.,Clore GM, Appella E, Yamada M, Matsushima K, Gronenborn AM Biochemistry. 1990 Feb 20;29(7):1689-96. PMID:2184886[4]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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Citations
45 reviews cite this structure
Human chemokines: an update.
Baggiolini et al. (1997)
44 more
174 other articles
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See Also

References

  1. ↑ Van Damme J, Rampart M, Conings R, Decock B, Van Osselaer N, Willems J, Billiau A. The neutrophil-activating proteins interleukin 8 and beta-thromboglobulin: in vitro and in vivo comparison of NH2-terminally processed forms. Eur J Immunol. 1990 Sep;20(9):2113-8. PMID:2145175 doi:http://dx.doi.org/10.1002/eji.1830200933
  2. ↑ Hebert CA, Luscinskas FW, Kiely JM, Luis EA, Darbonne WC, Bennett GL, Liu CC, Obin MS, Gimbrone MA Jr, Baker JB. Endothelial and leukocyte forms of IL-8. Conversion by thrombin and interactions with neutrophils. J Immunol. 1990 Nov 1;145(9):3033-40. PMID:2212672
  3. ↑ Schutyser E, Struyf S, Proost P, Opdenakker G, Laureys G, Verhasselt B, Peperstraete L, Van de Putte I, Saccani A, Allavena P, Mantovani A, Van Damme J. Identification of biologically active chemokine isoforms from ascitic fluid and elevated levels of CCL18/pulmonary and activation-regulated chemokine in ovarian carcinoma. J Biol Chem. 2002 Jul 5;277(27):24584-93. Epub 2002 Apr 26. PMID:11978786 doi:http://dx.doi.org/10.1074/jbc.M112275200
  4. ↑ Clore GM, Appella E, Yamada M, Matsushima K, Gronenborn AM. Three-dimensional structure of interleukin 8 in solution. Biochemistry. 1990 Feb 20;29(7):1689-96. PMID:2184886

Contents


PDB ID 1il8

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