Download MendeleyComparison of the structure of vMIP-II with eotaxin-1, RANTES, and MCP-3 suggests a unique mechanism for CCR3 activation.
Fernandez, E.J., Wilken, J., Thompson, D.A., Peiper, S.C., Lolis, E.(2000) Biochemistry 39: 12837-12844
- PubMed: 11041848
- DOI: https://doi.org/10.1021/bi001166f
- Primary Citation of Related Structures:
1CM9 - PubMed Abstract:
Herpesvirus-8 macrophage inflammatory protein-II (vMIP-II) binds a uniquely wide spectrum of chemokine receptors. We report the X-ray structure of vMIP-II determined to 2.1 A resolution. Like RANTES, vMIP-II crystallizes as a dimer and displays the conventional chemokine tertiary fold. We have compared the surface topology and electrostatic potential of vMIP-II to those of eotaxin-1, RANTES, and MCP-3, three CCR3 physiological agonists with known three-dimensional structures. Surface epitopes identified on RANTES to be involved in binding to CCR3 are mimicked on the eotaxin-1 and MCP-3 surface. However, the surface topology of vMIP-II in these regions is markedly different. The results presented here indicate that the structural basis for interaction with the chemokine receptor CCR3 by vMIP-II is different from that for the physiological agonists eotaxin-1, RANTES, and MCP-3. These differences on vMIP-II may be a consequence of its broad-range receptor recognition capabilities.
Organizational Affiliation:
Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520, USA.
