2015
DOI: 10.1021/acs.biochem.5b00560
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Solution Structure of CCL19 and Identification of Overlapping CCR7 and PSGL-1 Binding Sites

Abstract: CCL19 and CCL21 are chemokines involved in the trafficking of immune cells, particularly within the lymphatic system, through activation of CCR7. Concurrent expression of PSGL-1 and CCR7 in naive T-cells enhances recruitment of these cells to secondary lymphoid organs by CCL19 and CCL21. Here the solution structure of CCL19 is reported. It contains a canonical chemokine domain. Chemical shift mapping shows the N-termini of PSGL-1 and CCR7 have overlapping binding sites for CCL19 and binding is competitive. Imp… Show more

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Cited by 36 publications
(70 citation statements)
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“…100 µM U- 15 N labeled CCL21 in 25 mM deuterated MES pH 6.0, 10% D 2 O, and 0.2% NaN 3 was titrated with heparin disaccharide I-S (Sigma–Aldrich) and monitored using 15 N- 1 H HSQC spectra as previously described [19, 25]. Combined amide chemical shift perturbations were computed as [(Δδ H ) 2 +(Δδ N ) 2 ] 1/2 , where Δδ H and Δδ N are changes in backbone amide 1 H and 15 N chemical shifts in ppm, respectively.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…100 µM U- 15 N labeled CCL21 in 25 mM deuterated MES pH 6.0, 10% D 2 O, and 0.2% NaN 3 was titrated with heparin disaccharide I-S (Sigma–Aldrich) and monitored using 15 N- 1 H HSQC spectra as previously described [19, 25]. Combined amide chemical shift perturbations were computed as [(Δδ H ) 2 +(Δδ N ) 2 ] 1/2 , where Δδ H and Δδ N are changes in backbone amide 1 H and 15 N chemical shifts in ppm, respectively.…”
Section: Methodsmentioning
confidence: 99%
“…The domain is often followed by a very short flexible C-terminus [18]. For example, CCL19 contains 77 residues with the seven most C-terminal residues making up the short unstructured C-terminus [19]. CCL21 contains a chemokine domain but residues 71–111 are unstructured with the exception of a disulfide bond linking C80 to C99 [20].…”
Section: Introductionmentioning
confidence: 99%
“…2. Mammalian CCL19 has a canonical chemokine fold consisting of a flexible N-terminus and N-loop followed by an antiparallel three stranded β-sheet, a C-terminal α-helix, and a short flexible C-terminus (65). Predicted rainbow trout CCL19-like structures show some commonalities but also important differences compared to mammalian CCL19.…”
Section: Resultsmentioning
confidence: 99%
“…Different sulfation patterns affect the selectivity of synthetic N-terminal peptides from CCR3 for CCL11/eotaxin-1, CCL24/eotaxin-2, and CCL26/eotaxin-3 and are hypothesized to contribute to ligand biased signaling in intact CCR3 (Zhu et al, 2011). Unlike CCR3 or CCR7, which have multiple and in most cases monomeric ligands (Love, Sandberg, Ziarek, Gerarden et al, 2012; Millard et al, 2014; Veldkamp et al, 2015), CXCR4 has only one natural ligand CXCL12. Peptides and sulfopeptides corresponding to the N-terminus of CXCR4 promote CXCL12 dimer formation and a covalently locked CXCL12 dimer with a nearly identical structure to the wild-type CXCL12 dimer signals through CXCR4 as a partial agonist (Drury, Ziarek, Gravel, Veldkamp et al, 2011; Veldkamp et al, 2008; Veldkamp et al, 2006; Ziarek et al, 2013).…”
Section: Perspectivesmentioning
confidence: 99%
“…Resting T-cells expressing PSGL-1 show enhanced chemotaxis towards the homeostatic chemokines CCL19 and CCL21 and increased recruitment to secondary lymphoid organs (Veerman, Williams, Uchimura, Singer et al, 2007). However, these enhancements are not a result of the canonical PSGL-1 selectin interactions, but result form the N-terminus of PSGL-1 binding directly to CCL19 or CCL21 (Veerman et al, 2007; Veldkamp, Kiermaier, Gabel-Eissens, Gillitzer et al, 2015). It is not surprising that the acidic, sulfotyrosine containing N-terminus of PSGL-1 binds CCL19 or CCL21.…”
Section: Introductionmentioning
confidence: 99%