Human chemokine (C-C motif) ligand 21 ELISA Kit | CCL21 elisa kit

Human secondary lymphoid-tissue chemokine, SLC ELISA Kit

Cat. Num. AAA702153

• Gene Names: CCL21; ECL; SLC; CKb9; TCA4; 6Ckine; SCYA21
• Reactivity: Human
• Synonyms: chemokine (C-C motif) ligand 21; Human secondary lymphoid-tissue chemokine; SLC ELISA Kit; 6Ckine; CKb9; ECL; MGC34555; SCYA21; SLC; TCA4; Efficient Chemoattractant for Lymphocytes; beta chemokine exodus-2; exodus-2; secondary lymphoid tissue chemokine; small inducible cytokine A21; small indu; CCL21 elisa kit

• Reactivity: Human
• Specificity: This assay has high sensitivity and excellent specificity for detection of Human CCL21. No significant cross-reactivity or interference between Human CCL21 and analogues was observed.
• Sequence Length: 134

• Detection Range: 78 pg/ml-5000 pg/ml
• Sensitivity: 20 pg/ml
• Intra-assay Precision: Intra-assay Precision (Precision within an assay): CV% is less than 8%; Three samples of known concentration were tested twenty times on one plate to assess.; Inter-assay Precision (Precision between assays): CV% is less than 10%; Three samples of known concentration were tested in twenty assays to assess.
• Detection Wavelength: 450 nm
• Sample Volume: 50-100ul
• Protein Biological Process 1: Immunity
• Protein Biological Process 2: chemokine
• Protein Biological Process 3: Chemotaxis
• Preparation and Storage: Unopened test kits should be stored at 2 to 8 degree C upon receipt. Please refer to pdf manual for further storage instructions.

Typical Testing Data/Standard Curve (for reference only)

Related Product Information for CCL21 elisa kit

Introduction: Secondary Lymphoid-tissueChemokine (SLC) is a recently identified CC chemokine that is constitutively expressed in various lymphoid tissues and is a potent and specific chemoattractant for lymphocytes. The SLC gene and the gene encoding another lymphocyte-specific CC chemokine, EBI1-ligand chemokine (ELC), form a mini-cluster at human chromosome 9p13. Here, we show that SLC is a high affinity functional ligand for chemokine receptor 7 (CCR7) that is expressed on T and B lymphocytes and a known receptor for ELC. SLC induced a vigorous calcium mobilization in murine L1.2 cells stably expressing human CCR7. SLC tagged with the secreted form of alkaline phosphatase (SLC-SEAP) showed specific binding to CCR7 that was fully competed by SLC with an IC50 of 0.5 nm. SLC also induced a vigorous chemotactic response in CCR7-expressing L1.2 cells with a typical bell-shaped dose-response curve and a maximal migration at 10 nm. When assessed using CCR7-transfected L1.2 cells, SLC and ELC were essentially equivalent in terms of cross desensitization in calcium mobilization via CCR7, cross-competition in binding to CCR7, and induction of chemotaxis via CCR7. SLC and ELC were also shown to fully share receptors expressed on cultured normal T cells known to express CCR7. Notably, however, SLC was somehow less efficient in cross-desensitization against ELC in calcium mobilization and in cross-competition with ELC for binding when assessed using cultured normal T cells. Thus, SLC and ELC, even though sharing only 32% amino acid identity, constitute a genetically and functionally highly related subgroup of CC chemokines.

Principle of the Assay: The microtiter plate provided in this kit has been pre-coated with an antibody specific to SLC. Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated antibody preparation specific for SLC and Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. Then a TMB (3,3',5,5' tetramethyl-benzidine) substrate solution is added to each well. Only those wells that contain SLC, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of a sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450 nm +/- 2 nm. The concentration of SLC in the samples is then determined by comparing the O.D. of the samples to the standard curve.

NCBI and Uniprot Product Information

• NCBI GI #: 4506835
• NCBI GeneID: 6366
• NCBI Accession #: NP_002980.1
• NCBI GenBank Nucleotide #: NM_002989.3
• UniProt Accession #: O00585
• Molecular Weight: 14,646 Da
• NCBI Official Full Name: C-C motif chemokine 21
• NCBI Official Synonym Full Names: chemokine (C-C motif) ligand 21
• NCBI Official Symbol: CCL21
• NCBI Official Synonym Symbols: ECL; SLC; CKb9; TCA4; 6Ckine; SCYA21
• NCBI Protein Information: C-C motif chemokine 21; beta chemokine exodus-2; secondary lymphoid tissue chemokine; Efficient Chemoattractant for Lymphocytes; small inducible cytokine subfamily A (Cys-Cys), member 21
• UniProt Protein Name: C-C motif chemokine 21
• Protein Family: C-C motif chemokine
• UniProt Gene Name: CCL21
• UniProt Synonym Gene Names: SCYA21; UNQ784/PRO1600; SLC
• UniProt Entry Name: CCL21_HUMAN

NCBI Description

This gene is one of several CC cytokine genes clustered on the p-arm of chromosome 9. Cytokines are a family of secreted proteins involved in immunoregulatory and inflammatory processes. The CC cytokines are proteins characterized by two adjacent cysteines. Similar to other chemokines the protein encoded by this gene inhibits hemopoiesis and stimulates chemotaxis. This protein is chemotactic in vitro for thymocytes and activated T cells, but not for B cells, macrophages, or neutrophils. The cytokine encoded by this gene may also play a role in mediating homing of lymphocytes to secondary lymphoid organs. It is a high affinity functional ligand for chemokine receptor 7 that is expressed on T and B lymphocytes and a known receptor for another member of the cytokine family (small inducible cytokine A19). [provided by RefSeq, May 2013]

Uniprot Description

Function: Inhibits hemopoiesis and stimulates chemotaxis. Chemotactic in vitro for thymocytes and activated T-cells, but not for B-cells, macrophages, or neutrophils. Shows preferential activity towards naive T-cells. May play a role in mediating homing of lymphocytes to secondary lymphoid organs. Binds to atypical chemokine receptor ACKR4 and mediates the recruitment of beta-arrestin (ARRB1/2) to ACKR4.