AB274888

Alexa Fluor® 555 Anti-CD19 antibody [EPR5906]

Name: Anti-CD19 Alexa Fluor® 555 antibody [EPR5906] (ab274888) IgG | Abcam
Brand: Abcam Limited
SKU: AB274888
Price: 590 USD
Availability: InStock
Rating: 5 (1 reviews)

BOND RX™ Validated
RabMAb
Recombinant
What is this?

(1 Review)

(2 Publications)

Rabbit Recombinant Monoclonal CD19 antibody - conjugated to Alexa Fluor® 555. Suitable for IHC-P and reacts with Human samples. Cited in 2 publications.

View Alternative Names

CD19, B-lymphocyte antigen CD19, B-lymphocyte surface antigen B4, Differentiation antigen CD19, T-cell surface antigen Leu-12

1 Images

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Alexa Fluor® 555 Anti-CD19 antibody [EPR5906] (AB274888)

IHC-P

Lab

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Alexa Fluor® 555 Anti-CD19 antibody [EPR5906] (AB274888)

Immunofluorescence staining of CD19 staining in a section of formalin-fixed paraffin-embedded human normal tonsil*. Performed on a Leica BOND. The section was pre-treated using heat mediated antigen retrieval with EDTA (pH9.0) using retrieval settings of 110°;C for 20 minutes. The section was then incubated at room temperature for 1 hour with ab274888 at 1/100 dilution (shown in green) and counterstained using ab195884, Rat monoclonal to Tubulin (Alexa Fluor® 647), at 1/250 dilution (shown in red). Nuclear DNA was labelled with DAPI (shown in blue). The section was then mounted using Dako Fluorescence Mounting Medium ®. Image was taken with a confocal microscope (Leica-Microsystems, TCS SP8). For other IHC staining systems (automated and non-automated), customers should optimize variable parameters such as antigen retrieval conditions, antibody concentrations and incubation times.*Tissue obtained from the Human Research Tissue Bank, supported by the NIHR Cambridge Biomedical Research Centre.

HRP

HRP Anti-CD19 antibody [EPR5906]
665 Alexa Fluor® 647

Alexa Fluor® 647 Anti-CD19 antibody [EPR5906]
519 Alexa Fluor® 488

Alexa Fluor® 488 Anti-CD19 antibody [EPR5906]
660 APC

APC Anti-CD19 antibody [EPR5906]
578 PE

PE Anti-CD19 antibody [EPR5906]
Unconjugated

Anti-CD19 antibody [EPR5906]
Carrier free

Anti-CD19 antibody [EPR5906] - Low endotoxin, Azide free
Carrier free

Anti-CD19 antibody [EPR5906] - BSA and Azide free

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

EPR5906

Isotype

IgG

Conjugation

Alexa Fluor® 555

Excitation/Emission

Ex: 555nm, Em: 565nm

Carrier free

Reacts with

Human

Applications

IHC-P

applications

Immunogen

The exact immunogen used to generate this antibody is proprietary information.

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Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "IHCP" : {"fullname" : "Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)", "shortname":"IHC-P"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "IHCP-species-checked": "testedAndGuaranteed", "IHCP-species-dilution-info": "1/100", "IHCP-species-notes": "<p></p>" } } }

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Product details

Patented technology
Our RabMAb^® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb^® patents.

What are the advantages of a recombinant monoclonal antibody?
This product is a recombinant monoclonal antibody, which offers several advantages including:

- High batch-to-batch consistency and reproducibility
- Improved sensitivity and specificity
- Long-term security of supply
- Animal-free batch production

For more information, read more on recombinant antibodies.

Alexa Fluor® is a registered trademark of Molecular Probes, Inc, a Thermo Fisher Scientific Company. The Alexa Fluor® dye included in this product is provided under an intellectual property license from Life Technologies Corporation. As this product contains the Alexa Fluor® dye, the purchase of this product conveys to the buyer the non-transferable right to use the purchased product and components of the product only in research conducted by the buyer (whether the buyer is an academic or for-profit entity). As this product contains the Alexa Fluor® dye the sale of this product is expressly conditioned on the buyer not using the product or its components, or any materials made using the product or its components, in any activity to generate revenue, which may include, but is not limited to use of the product or its components: in manufacturing; (ii) to provide a service, information, or data in return for payment (iii) for therapeutic, diagnostic or prophylactic purposes; or (iv) for resale, regardless of whether they are sold for use in research. For information on purchasing a license to this product for purposes other than research, contact Life Technologies Corporation, 5781 Van Allen Way, Carlsbad, CA 92008 USA or outlicensing@thermofisher.com.

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Properties and storage information

Form

Liquid

Purification technique

Affinity purification Protein A

Storage buffer

pH: 7.4 Preservative: 0.02% Sodium azide Constituents: PBS, 30% Glycerol (glycerin, glycerine), 1% BSA

Shipped at conditions

Blue Ice

Appropriate short-term storage duration

1-2 weeks

Appropriate short-term storage conditions

+4°C

Appropriate long-term storage conditions

-20°C

Aliquoting information

Upon delivery aliquot

Storage information

Avoid freeze / thaw cycle|Store in the dark

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Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

CD19 is a transmembrane protein also known as B4 or B-lymphocyte antigen CD19 with an approximate molecular weight of 95 kDa. It is expressed on the surface of B cells throughout their development from pro-B cells to mature B cells. CD19 functions mechanically as a coreceptor enhancing the sensitivity of B cell receptor (BCR) signaling. This protein plays a significant role in promoting the activation and proliferation of B cells by lowering the threshold for antigen receptor engagement.

Biological function summary

CD19 acts as an essential player in B cell signaling. CD19 integrates signals from the BCR with other coreceptors acting as a signaling hub. It participates in forming a signaling complex that includes proteins like CD21 and CD81 which further amplifies BCR-mediated signaling. This complex plays a critical role in B cell activation differentiation and survival ensuring that immune responses are efficiently mounted against pathogens.

Pathways

The CD19 protein fits into key immune response pathways such as the BCR signaling pathway and the PI3K-Akt signaling pathway. CD19 collaborates with other proteins like CD21 CD81 and PI3K within these pathways. Its interaction in the PI3K-Akt pathway for instance supports critical processes including B cell activation and homeostasis contributing to the adaptive immune response.

CD19 is connected to B cell malignancies and autoimmune diseases. B cell acute lymphoblastic leukemia (ALL) often shows aberrant CD19 expression making it a valuable target for therapeutic interventions like anti-CD19 monoclonal antibodies. Additionally overexpression or mutations of CD19 may contribute to autoimmune diseases by disrupting normal B cell regulation. CD19's connection with proteins like CD22 and CD20 in these pathological contexts highlights its relevance in developing targeted therapies.

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Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:

Visit the General protocols
Visit the Troubleshooting

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Target data

Functions as a coreceptor for the B-cell antigen receptor complex (BCR) on B-lymphocytes (PubMed : 29523808). Decreases the threshold for activation of downstream signaling pathways and for triggering B-cell responses to antigens (PubMed : 1373518, PubMed : 16672701, PubMed : 2463100). Activates signaling pathways that lead to the activation of phosphatidylinositol 3-kinase and the mobilization of intracellular Ca(2+) stores (PubMed : 12387743, PubMed : 16672701, PubMed : 9317126, PubMed : 9382888). Is not required for early steps during B cell differentiation in the blood marrow (PubMed : 9317126). Required for normal differentiation of B-1 cells (By similarity). Required for normal B cell differentiation and proliferation in response to antigen challenges (PubMed : 1373518, PubMed : 2463100). Required for normal levels of serum immunoglobulins, and for production of high-affinity antibodies in response to antigen challenge (PubMed : 12387743, PubMed : 16672701, PubMed : 9317126).

See full target information CD19

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Publications (2)

Recent publications for all applications. Explore the full list and refine your search

FASEB journal : official publication of the Federation of American Societies for Experimental Biology 39:e70691 PubMed40458983

2025

Insulin-Like Growth Factor 2 Reverses Synaptic and Cognitive Deficits in Fetal Growth Restriction Mice.

Applications

Unspecified application

Species

Unspecified reactive species

Jianfeng Dong,Wen Chen,Shujuan Chang,Nana Liu,Wei Zhu,Li Ma,Jing Qiao,Yuhang Wang,Zhiyong Mao,Jiuhong Kang

Nature immunology 23:1256-1272 PubMed35902638

2022

Partial RAG deficiency in humans induces dysregulated peripheral lymphocyte development and humoral tolerance defect with accumulation of T-bet B cells.

Applications

Unspecified application

Species

Unspecified reactive species

Krisztian Csomos,Boglarka Ujhazi,Peter Blazso,Jose L Herrera,Christopher M Tipton,Tomoki Kawai,Sumai Gordon,Maryssa Ellison,Kevin Wu,Matthew Stowell,Lauren Haynes,Rachel Cruz,Bence Zakota,Johnny Nguyen,Michelle Altrich,Christoph B Geier,Svetlana Sharapova,Joseph F Dasso,Jennifer W Leiding,Grace Smith,Waleed Al-Herz,Mayra de Barros Dorna,Olajumoke Fadugba,Eva Fronkova,Veronika Kanderova,Michael Svaton,Sarah E Henrickson,Joseph D Hernandez,Taco Kuijpers,Snezhina Mihailova Kandilarova,Elizaveta Naumova,Tomas Milota,Anna Sediva,Despina Moshous,Benedicte Neven,Tara Saco,Ravishankar Sargur,Sinisa Savic,John Sleasman,Gauri Sunkersett,Brant R Ward,Masanobu Komatsu,Stefania Pittaluga,Attila Kumanovics,Manish J Butte,Michael P Cancro,Shiv Pillai,Eric Meffre,Luigi D Notarangelo,Jolan E Walter

View all publications

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Product promise

We are committed to supporting your work with high-quality reagents, and we're here for you every step of the way. In the unlikely event that one of our products does not perform as expected, you're protected by our Product Promise.

For full details, please see our Terms & Conditions

Please note: All products are 'FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC OR THERAPEUTIC PROCEDURES'.

For licensing inquiries, please contact partnerships@abcam.com

Alexa Fluor® 555 Anti-CD19 antibody [EPR5906]

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Alexa Fluor® 555 Anti-CD19 antibody [EPR5906] (AB274888)

Related conjugates and formulations (8)

Key facts

Host species

Clonality

Clone number

Isotype

Conjugation

Excitation/Emission

Carrier free

Reacts with

Applications

Immunogen

Reactivity data

Product details

Properties and storage information

Form

Purification technique

Storage buffer

Shipped at conditions

Appropriate short-term storage duration

Appropriate short-term storage conditions

Appropriate long-term storage conditions

Aliquoting information

Storage information

Supplementary information

Biological function summary

Pathways

Product protocols

Target data

Publications (2)

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