2L4N

Solution Structure of the Chemokine CCL21

• PDB DOI: https://doi.org/10.2210/pdb2L4N/pdb
• BMRB: 17245

• Classification: CYTOKINE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2010-10-10 Released: 2011-11-02 
• Deposition Author(s): Veldkamp, C.T., Peterson, F.C., Love, M., Sandberg, J.L.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Literature

Solution structure of CCL21 and identification of a putative CCR7 binding site.

Love, M., Sandberg, J.L., Ziarek, J.J., Gerarden, K.P., Rode, R.R., Jensen, D.R., McCaslin, D.R., Peterson, F.C., Veldkamp, C.T.

(2012) Biochemistry 51: 733-735

• PubMed: 22221265 
• DOI: https://doi.org/10.1021/bi201601k
• Primary Citation of Related Structures:  
  2L4N


• PubMed Abstract: 
  

  CCL21 is a human chemokine that recruits normal immune cells and metastasizing tumor cells to lymph nodes through activation of the G protein-coupled receptor CCR7. The CCL21 structure solved by NMR contains a conserved chemokine domain followed by an extended, unstructured C-terminus that is not typical of most other chemokines. A sedimentation equilibrium study showed CCL21 to be monomeric. Chemical shift mapping indicates that the CCR7 N-terminus binds to the N-loop and third β-strand of CCL21's chemokine domain. Details of CCL21-receptor recognition may enable structure-based drug discovery of novel antimetastatic agents.

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Organizational Affiliation: 

Department of Chemistry, University of Wisconsin-Whitewater, Whitewater, Wisconsin 53190, United States.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 12.52 kDa 
• Atom Count: 555 
• Modelled Residue Count: 70 
• Deposited Residue Count: 113 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
C-C motif chemokine 21	A	113	Homo sapiens	Mutation(s): 0  Gene Names: CCL21, RP11-195F19.22-001, SCYA21, UNQ784/PRO1600
UniProt & NIH Common Fund Data Resources
Find proteins for O00585 (Homo sapiens) Explore O00585  Go to UniProtKB:  O00585
PHAROS:  O00585 GTEx:  ENSG00000137077

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 100 
• Conformers Submitted: 20 
• Selection Criteria: target function 

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-11-02 
Deposition Author(s): Veldkamp, C.T., Peterson, F.C., Love, M., Sandberg, J.L.

Revision History  

• Version 1.0: 2011-11-02
  Type: Initial release
  
• Version 1.1: 2015-09-16
  Changes: Database references
• Version 1.2: 2020-02-05
  Changes: Data collection, Database references, Other
• Version 1.3: 2023-06-14
  Changes: Database references, Other
• Version 1.4: 2024-11-06
  Changes: Data collection, Database references, Structure summary