PMID- 23408426 OWN - NLM STAT- MEDLINE DCOM- 20130531 LR - 20211021 IS - 1083-351X (Electronic) IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 288 IP - 14 DP - 2013 Apr 5 TI - Tyrosine sulfation of chemokine receptor CCR2 enhances interactions with both monomeric and dimeric forms of the chemokine monocyte chemoattractant protein-1 (MCP-1). PG - 10024-10034 LID - S0021-9258(20)67362-8 [pii] LID - 10.1074/jbc.M112.447359 [doi] AB - Chemokine receptors are commonly post-translationally sulfated on tyrosine residues in their N-terminal regions, the initial site of binding to chemokine ligands. We have investigated the effect of tyrosine sulfation of the chemokine receptor CCR2 on its interactions with the chemokine monocyte chemoattractant protein-1 (MCP-1/CCL2). Inhibition of CCR2 sulfation, by growth of expressing cells in the presence of sodium chlorate, significantly reduced the potency for MCP-1 activation of CCR2. MCP-1 exists in equilibrium between monomeric and dimeric forms. The obligate monomeric mutant MCP-1(P8A) was similar to wild type MCP-1 in its ability to induce leukocyte recruitment in vivo, whereas the obligate dimeric mutant MCP-1(T10C) was less effective at inducing leukocyte recruitment in vivo. In two-dimensional NMR experiments, sulfated peptides derived from the N-terminal region of CCR2 bound to both the monomeric and dimeric forms of wild type MCP-1 and shifted the equilibrium to favor the monomeric form. Similarly, MCP-1(P8A) bound more tightly than MCP-1(T10C) to the CCR2-derived sulfopeptides. NMR chemical shift mapping using the MCP-1 mutants showed that the sulfated N-terminal region of CCR2 binds to the same region (N-loop and beta3-strand) of both monomeric and dimeric MCP-1 but that binding to the dimeric form also influences the environment of chemokine N-terminal residues, which are involved in dimer formation. We conclude that interaction with the sulfated N terminus of CCR2 destabilizes the dimerization interface of inactive dimeric MCP-1, thus inducing dissociation to the active monomeric state. FAU - Tan, Joshua H Y AU - Tan JHY AD - Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia. FAU - Ludeman, Justin P AU - Ludeman JP AD - Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia. FAU - Wedderburn, Jamie AU - Wedderburn J AD - Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia. FAU - Canals, Meritxell AU - Canals M AD - Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia. FAU - Hall, Pam AU - Hall P AD - Centre for Inflammatory Diseases, Monash University, Department of Medicine, Monash Medical Centre, Clayton, Victoria 3168, Australia. FAU - Butler, Stephen J AU - Butler SJ AD - School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia. FAU - Taleski, Deni AU - Taleski D AD - School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia. FAU - Christopoulos, Arthur AU - Christopoulos A AD - Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia. FAU - Hickey, Michael J AU - Hickey MJ AD - Centre for Inflammatory Diseases, Monash University, Department of Medicine, Monash Medical Centre, Clayton, Victoria 3168, Australia. FAU - Payne, Richard J AU - Payne RJ AD - School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia. FAU - Stone, Martin J AU - Stone MJ AD - Department of Biochemistry and Molecular Biology, Monash University, Clayton, Victoria 3800, Australia. Electronic address: martin.stone@monash.edu. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130213 PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 0 (Chemokine CCL2) RN - 0 (Peptides) RN - 0 (Receptors, CCR2) RN - 42HK56048U (Tyrosine) RN - 70FD1KFU70 (Sulfur) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 3) RN - SY7Q814VUP (Calcium) SB - IM EIN - J Biol Chem. 2014 May 9;289(19):13362 MH - Binding Sites MH - Calcium/metabolism MH - Chemokine CCL2/*metabolism MH - Dimerization MH - *Gene Expression Regulation MH - HEK293 Cells MH - Humans MH - Kinetics MH - Magnetic Resonance Spectroscopy/methods MH - Mitogen-Activated Protein Kinase 3/metabolism MH - Models, Chemical MH - Peptides/chemistry MH - Phosphorylation MH - Protein Binding MH - Protein Processing, Post-Translational MH - Receptors, CCR2/*chemistry/physiology MH - Sulfur/chemistry MH - Tyrosine/*chemistry PMC - PMC3617241 EDAT- 2013/02/15 06:00 MHDA- 2013/06/01 06:00 PMCR- 2014/04/05 CRDT- 2013/02/15 06:00 PHST- 2013/02/15 06:00 [entrez] PHST- 2013/02/15 06:00 [pubmed] PHST- 2013/06/01 06:00 [medline] PHST- 2014/04/05 00:00 [pmc-release] AID - S0021-9258(20)67362-8 [pii] AID - M112.447359 [pii] AID - 10.1074/jbc.M112.447359 [doi] PST - ppublish SO - J Biol Chem. 2013 Apr 5;288(14):10024-10034. doi: 10.1074/jbc.M112.447359. Epub 2013 Feb 13.