Interleukin-1 receptor antagonist protein (IRAP) is a naturally occurring inhibitor of the interleukin-1 receptor. In contrast to IL-1 beta, IRAP binds to the IL-1 receptor but does not elicit a physiological response. We have determined the solution structure of IRAP using NMR spectroscopy ...
Interleukin-1 receptor antagonist protein (IRAP) is a naturally occurring inhibitor of the interleukin-1 receptor. In contrast to IL-1 beta, IRAP binds to the IL-1 receptor but does not elicit a physiological response. We have determined the solution structure of IRAP using NMR spectroscopy. While the overall topology of the two 153-residue proteins is quite similar, functionally critical differences exist concerning the residues of the linear amino acid sequence that constitute structurally homologous regions in the two proteins. Structurally homologous residues important for IL-1 receptor binding are conserved between IRAP and IL-1 beta. By contrast, structurally homologous residues critical for receptor activation are not conserved between the two proteins.
Related Citations:
Interleukin-1 Receptor Antagonist Protein: Solution Secondary Structure from Noe'S and 1H Alpha and 13C Alpha Chemical Shifts Stockman, B.J., Scahill, T.A., Euvrard, A., Strakalaitis, N.A., Brunner, D.P., Yem, A.W., Deibel, M.R. (1992) Bull Magn Reson 14: 202
Proton, Carbon and Nitrogen Chemical Shifts Accurately Delineate Differences and Similarities in Secondary Structure between the Homologous Proteins Irap and Il-1Beta Stockman, B.J., Scahill, T.A., Strakalaitis, N.A., Brunner, D.P., Yem, A.W., Deibel, M.R. (1992) J Biomol NMR 2: 591
Secondary Structure and Topology of Interleukin-1 Receptor Antagonist Protein Determined by Heteronuclear Three-Dimensional NMR Spectroscopy Stockman, B.J., Scahill, T.A., Roy, M., Ulrich, E.L., Strakalaitis, N.A., Brunner, D.P., Yem, A.W., Deibel, M.R. (1992) Biochemistry 31: 5237
Organizational Affiliation:
Upjohn Laboratories, Upjohn Company, Kalamazoo, MI 49007.
Download Mendeley
