CD21 Antibody (YA1307)
(Synonyms: C3DR antibody; CD 21 antibody; CD21 antibody; Complement C3d receptor antibody; Complement component (3d/Epstein Barr virus) receptor 2 antibody; Complement receptor type 2 antibody; CR antibody; Cr2 antibody; CR2_HUMAN antibody; CVID7 antibody; EBV receptor antibody; EBV-R antibody; Epstein Barr virus receptor antibody; Epstein-Barr virus receptor antibody; EVBR antibody; SLEB9 antibody; )Based on 1 Customer Validation
CD21 Antibody (YA1307) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to CD21.
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Host:
Rabbit
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Isotype:
IgG
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Application:
WB, IHC-P, ICC/IF, IP, FC, IF-Tissue
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Reactivity :
Human, Mouse, Rat
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Formulation:
Supplied in 1*TBS (pH7.4), 0.05% BSA, 40% Glycerol. Preservative: 0.05% Sodium Azide.
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Conjugation:
Non-conjugated
Applications
| Application |
WB
WB: Western Blot
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ICC/IF
ICC/IF: Immunocytochemistry/
Immunofluorescence |
IHC-P
IHC-P: Immunohistochemistry-Paraffin
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FC
FC: Flow Cytometry
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IF-Tissue
IF-Tissue: Immunofluorescence-Tissue
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| Dilution Ratio | 1:5000 | 1:50-1:200 | 1:50-1:800 | 1:1000 | 1:50-1:1000 |
Product Details
CD21 Antibody (YA1307) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to CD21.
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Host Rabbit
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Clonality Recombinant,Monoclonal
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Species ReactivityHuman, Mouse, Rat
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Observed Molecular WeightObserved band size:150 kDaNote: Due to possible protein modifications or aggregation, the molecular weight should be confirmed by actual measurement, and the predicted value is for reference only.
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Calculated Molecular Weight Predicted band size: 113 kDa
Entrez Gene: 1380 Human ; 12902 Mouse ; 289395 Rat
SwissProt: P20023 Human ; P19070 Mouse ;
OMIM: 610927 Human
Synthetic peptide within Human CD21 aa 989-1033 / 1033.
Endogenous
affinity purified.
Non-conjugated
Unmodified
IgG
Product Properties
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Appearance
Liquid
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Formulation
Supplied in 1*TBS (pH7.4), 0.05% BSA, 40% Glycerol. Preservative: 0.05% Sodium Azide.
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Concentration
Batch-dependent, Please check the COA for the concentration of each lot. Check Lot Concentration
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Storage & Stability
Stored at -20°C for 1 year. Avoid repeated freeze / thaw cycles.
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Shipping
Shipping with blue ice.
Verification Images
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Western blot analysis of extracts from Raji (lane 2(20μg) and Raji (lane 3(40μg) using CD21 (HY-P81562) Rabbit mAb. Proteins were transferred to a PVDF membrane and blocked with 5% non-fat milk in TBST for 2 hour at room temperature. The primary antibody (1/1000) and Loading control antibody (Beta Actin, HY-P80438, 1/10000) was used in 5% non-fat milk in TBST at 4°C overnight. Goat Anti-Mouse/Rabbit IgG-HRP Secondary Antibody (1/10000) was used for 1 hour at room temperature.
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Immunohistochemical analysis of paraffin-embedded mouse spleen tissue using CD21 Antibody. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH 6.0) for 8 minutes. The tissues were blocked in QuickBlock for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody at 1/100 dilution in 4℃ overnight. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
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Immunohistochemical analysis of paraffin-embedded mouse spleen tissue using CD21 Antibody. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH 6.0) for 8 minutes. The tissues were blocked in QuickBlock for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody at 1/100 dilution in 4℃ overnight. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
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Flow cytometric analysis of 1X10^6 Raji cells labeling CD21 Antibody (HY-P81562, red). Cells were stained with the primary antibody at 1/100 dilution for an hour at 4℃. Alexa Fluor® 488-conjugated AffiniPure Goat Anti-Rabbit IgG H&L (HY-P8002) was used as the secondary antibody at 1/1,000 dilution for 30 minutes at 4℃. Rabbit IgG Isotype Control (HY-P80879, blue) was used as the isotype control, cells without incubation with primary antibody were used as the unlabeled control (black).
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Immunocytochemistry analysis of SH-SY5Y cells labeling CD21 with CD21 Antibody (YA1307) (HY-P81562) at 1/50 dilution. Cells were fixed in 4% paraformaldehyde for 15 minutes at room temperature, permeabilized with 0.1% Triton X-100 for 10 minutes at room temperature, then blocked with QuickBlock™ Blocking Buffer for Immunol Staining for 10 min at room temperature. Cells were then incubated with CD21 Antibody (YA1307) ((HY-P81562) at 1/50 dilution in QuickBlock™ Blocking Buffer for Immunol Staining at 4 ℃. Alexa Fluor® 488-conjugated AffiniPure Goat Anti-Rabbit IgG H&L(HY-P8002, Green) was used as the secondary antibody at 1/1,000 dilution. PBS instead of the primary antibody was used as the secondary antibody only control. The Nuclear counterstain was DAPI (Blue).
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Immunocytochemistry analysis of SH-SY5Y cells labeling CD21 with CD21 Antibody (YA1307) (HY-P81562) at 1/100 dilution. Cells were fixed in 4% paraformaldehyde for 15 minutes at room temperature, permeabilized with 0.1% Triton X-100 for 10 minutes at room temperature, then blocked with QuickBlock™ Blocking Buffer for Immunol Staining for 10 min at room temperature. Cells were then incubated with CD21 Antibody (YA1307) ((HY-P81562) at 1/100 dilution in QuickBlock™ Blocking Buffer for Immunol Staining at 4 ℃. Alexa Fluor® 488-conjugated AffiniPure Goat Anti-Rabbit IgG H&L(HY-P8002, Green) was used as the secondary antibody at 1/1,000 dilution. PBS instead of the primary antibody was used as the secondary antibody only control. The Nuclear counterstain was DAPI (Blue).
Background
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Function
CD21 is a Serves as a receptor for various ligands including complement component CD3d, HNRNPU OR IFNA1. When C3d is bound to antigens, attaches to C3d on B-cell surface and thereby facilitates the recognition and uptake of antigens by B-cells. This interaction enhances B-cell activation and subsequent immune responses. Forms a complex with several partners on the surface of B-cells including CD19, FCRL5 and CD81, to form the B-cell coreceptor complex that plays a crucial role in B-cell activation and signaling. Also induces specific intracellular signaling separately from the BCR and CD19 by activating the tyrosine kinase SRC, which then phosphorylates nucleolin/NCL and triggers AKT and GSK3 kinase activities in a SYK/CD19-independent manner. Acts as a ligand for CD23 (FcepsilonRII), a low-affinity receptor for IgE, which is expressed on B-cells and other immune cells, and thus participates in the regulation of IgE production; (Microbial infection) Acts as a receptor for Epstein-Barr virus[1][2][3][4][5][6][7].
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Subcellular Localization
Cell membrane; Single-pass type I membrane protein
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Expression
Tissue_specificity:Mature B lymphocytes, T lymphocytes, pharyngeal epithelial cells, astrocytes, and follicular dendritic cells in the spleen
Positive sample: Raji cell lysate, HepG2, A549, human tonsil tissue, human spleen tissue, human lymph nodes tissue. -
Isoforms & Post-Translational Modification
P20023 has 4 isomers: P20023-1: 112916 Da (predicted); P20023-2: 110408 Da (predicted); P20023-3: 119160 Da (predicted); P20023-4: 118279 Da (predicted).
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Subunit
Interacts (via Sushi domain 1 and 2) with C3 (PubMed:11387479, PubMed:21527715). Interacts with CD19 (PubMed:1702139). Part of a complex composed of CD19, CR2/CD21, CD81 and IFITM1/CD225 in the membrane of mature B-cells (PubMed:1383329). Interacts (via Sushi domain 1 and 2) with FCER2 (via the C-terminus). Interacts with CD23 (PubMed:1386409). Interacts with FCRL5 (PubMed:30107486). Interacts with CR1 (PubMed:1708808). Interacts with INFNA1 (PubMed:1849076)
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SwissProt ID
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Synonyms
C3DR antibody; CD 21 antibody; CD21 antibody; Complement C3d receptor antibody; Complement component (3d/Epstein Barr virus) receptor 2 antibody; Complement receptor type 2 antibody; CR antibody; Cr2 antibody; CR2_HUMAN antibody; CVID7 antibody; EBV receptor antibody; EBV-R antibody; Epstein Barr virus receptor antibody; Epstein-Barr virus receptor antibody; EVBR antibody; SLEB9 antibody;
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Research Field
Tumor biology
Documentation
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Data Sheet (235 KB)
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SDS (254 KB)
- English - EN (254 KB)
- Français - FR (254 KB)
- Deutsch - DE (254 KB)
- Norwegian - NO (254 KB)
- Español - ES (254 KB)
- Swedish - SV (254 KB)
- Italian - IT (254 KB)
- Korean - KR (254 KB)
- Portuguese - PT (254 KB)
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User Guide for Antibodies (1077 KB)