CD21 Polyclonal antibody
CD21 Polyclonal Antibody for WB, IHC, ELISA
Host / Isotype
Rabbit / IgG
Reactivity
human
Applications
WB, IF, IHC, ELISA
Conjugate
Unconjugated
Cat no : 24374-1-AP
Synonyms
Validation Data Gallery
Tested Applications
| Positive WB detected in | Raji cells |
| Positive IHC detected in | human tonsillitis tissue Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0 |
Recommended dilution
| Application | Dilution |
|---|---|
| Western Blot (WB) | WB : 1:500-1:1000 |
| Immunohistochemistry (IHC) | IHC : 1:20-1:200 |
| It is recommended that this reagent should be titrated in each testing system to obtain optimal results. | |
| Sample-dependent, Check data in validation data gallery. | |
Published Applications
| IHC | See 1 publications below |
| IF | See 3 publications below |
Product Information
24374-1-AP targets CD21 in WB, IF, IHC, ELISA applications and shows reactivity with human samples.
| Tested Reactivity | human |
| Cited Reactivity | human |
| Host / Isotype | Rabbit / IgG |
| Class | Polyclonal |
| Type | Antibody |
| Immunogen | CD21 fusion protein Ag18058 相同性解析による交差性が予測される生物種 |
| Full Name | complement component (3d/Epstein Barr virus) receptor 2 |
| Calculated molecular weight | 1092 aa, 119 kDa |
| Observed molecular weight | 145 kDa |
| GenBank accession number | BC136394 |
| Gene symbol | CD21 |
| Gene ID (NCBI) | 1380 |
| RRID | AB_2879512 |
| Conjugate | Unconjugated |
| Form | Liquid |
| Purification Method | Antigen affinity purification |
| Storage Buffer | PBS with 0.02% sodium azide and 50% glycerol pH 7.3. |
| Storage Conditions | Store at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. |
Background Information
CD21, also known as complement receptor type 2 (CR2), complement C3d receptor, and Epstein-Barr virus receptor, is a transmembrane protein that contains a small cytoplasmic domain, a transmembrane region and an extracellular domain consisting of 15 tandem short consensus repeat sequences (PMID: 6230668; 2551147). It is expressed on B cells, follicular dendritic cells, thymocytes and a subset of peripheral T cells (PMID: 26119182). CD21 binds complement fragments C3d, C3dg and iC3b and acts as a receptor for the Epstein-Barr virus (PMID: 7753047). On B cells, together with CD19 and CD81, CD21 forms a complex that functions as a co-receptor to the BCR (PMID: 7542009). It is involved in B cells activation and functions.
Protocols
| Product Specific Protocols | |
|---|---|
| WB protocol for CD21 antibody 24374-1-AP | Download protocol |
| IHC protocol for CD21 antibody 24374-1-AP | Download protocol |
| Standard Protocols | |
|---|---|
| Click here to view our Standard Protocols |
Publications
| Species | Application | Title |
|---|---|---|
Nat Commun B cells sustain inflammation and predict response to immune checkpoint blockade in human melanoma. | ||
Clin Transl Med Single-cell transcriptome sequencing of B-cell heterogeneity and tertiary lymphoid structure predicts breast cancer prognosis and neoadjuvant therapy efficacy | ||
Front Immunol A Standardized Analysis of Tertiary Lymphoid Structures in Human Melanoma: Disease Progression- and Tumor Site-Associated Changes With Germinal Center Alteration. |
