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Alexa Fluor® 488 anti-CD340 (ErbB2/HER-2) Antibody

Pricing & Availability
Clone
W22266D (See other available formats)
Regulatory Status
RUO
Other Names
Receptor tyrosine-protein kinase ErbB-2 (ERBB2), human epidermal growth factor receptor 2 (HER2), metastatic lymph node gene 19 protein (MLN19), Proto-oncogene Neu, p185(erbB2), cluster of differentiation 340 (CD340), NGL, herstatin
Isotype
Rat IgG2a, κ
Ave. Rating
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Product Citations
publications
A. W22266D_A488_CD340_ICFC_110525
SK-BR-3 cells (positive cell line, filled histogram) and HeLa cells (negative cell line, open histogram) were fixed and permeabilized using Cyto-Fast™ Fix/Perm Buffer Set (Cat. No. 426803) and intracellularly stained with Alexa Fluor® 488 anti-CD340 (ErbB2/HER-2) (clone W22266D), or Alexa Fluor® 488 Rat IgG2a, κ Isotype Control (clone RTK2758, Cat. No. 400525) (dashed histogram, representative of both the positive and negative cell lines).
  • A. W22266D_A488_CD340_ICFC_110525
    SK-BR-3 cells (positive cell line, filled histogram) and HeLa cells (negative cell line, open histogram) were fixed and permeabilized using Cyto-Fast™ Fix/Perm Buffer Set (Cat. No. 426803) and intracellularly stained with Alexa Fluor® 488 anti-CD340 (ErbB2/HER-2) (clone W22266D), or Alexa Fluor® 488 Rat IgG2a, κ Isotype Control (clone RTK2758, Cat. No. 400525) (dashed histogram, representative of both the positive and negative cell lines).
  • B. W22266D_A488_CD340_ICC_110525
    HeLa cells (negative cell line, panel A) and SK-BR-3 cells (positive cell line, panel B) were fixed with 4% PFA Fixation Buffer (Cat. No. 420801) for 10 minutes, permeabilized with 100% ice-cold methanol for 10 minutes, and blocked with 5% FBS for 1 hour at room temperature. Cells were then stained with Alexa Fluor® 488 anti-ERRB2 (clone W22266D). Nuclei were counterstained with DAPI (Cat. No. 422801). The images were captured on a Revvity Operetta CLS™ High Content Analysis System with a 63X objective and merged. Scale bar: 50 µm
Compare all formats See Alexa Fluor® 488 spectral data
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639957 25 µg NOK1774
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639958 100 µg NOK3383
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Description

CD340, also commonly known as HER-2 or ErbB2, is a member of the epidermal growth factor receptor family of cell membrane tyrosine kinases containing a single transmembrane domain. CD340 contains three furin repeats and two CheY homologous receiver domains in the extracellular region. Although CD340 itself contains no ligand- binding domain, it interacts with other EGF receptor family members to form a heterodimer, stabilize ligand binding, and enhance kinase-mediated downstream signaling. CD340 has been shown to be involved in embryonic development and cancer progression; this protein is amplified in lung adenocarcinoma, some breast cancers, glioblastoma, gastric cancer, and ovarian carcinoma, where it functions as an oncogene. CD340 is a therapeutic target in several human cancers and it has been shown that overexpression in breast cancers confers Taxol resistance.

Product Details
Technical Data Sheet (pdf)

Product Details

Verified Reactivity
Human
Antibody Type
Monoclonal
Host Species
Rat
Immunogen
Recombinant fragment of the intracellular domain of human CD340 (ErbB2/HER-2)
Formulation
Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide
Preparation
The antibody was purified by affinity chromatography and conjugated with Alexa Fluor® 488 under optimal conditions.
Concentration
0.5 mg/mL
Storage & Handling
The antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.
Application

ICFC - Quality tested
ICC - Verified
Recommended Usage

Each lot of this antibody is quality control tested by intracellular flow cytometry using our Cyto-Fast™ Fix/Perm Buffer Set. For flow cytometric staining, the suggested use of this reagent is ≤ 0.125 µg per million cells in 100 µL volume. For immunocytochemistry, a concentration range of 1.0 - 10.0 μg/mL is recommended. It is recommended that the reagent be titrated for optimal performance for each application.

* Alexa Fluor® 488 has a maximum emission of 519 nm when it is excited at 488 nm.


Alexa Fluor® and Pacific Blue™ are trademarks of Life Technologies Corporation.

View full statement regarding label licenses
Excitation Laser
Blue Laser (488 nm)
Additional Product Notes

For use in intracellular flow cytometry (ICFC), it is recommended to fix/permeabilize with Cyto-Fast™ Fix/Perm Buffer Set (Cat. No. 426803).
Fixation/permeabilization with either True-Phos™ Perm Buffer (Cat. No. 425401) or True-Nuclear™ Transcription Factor Buffer Set (Cat. No. 424401) is not recommended.

For use in immunocytochemistry (ICC), it is recommended to fix/permeabilize with any of the following:
-Fixation buffer (Cat. No. 420801) with 0.5 % Triton X-100
-Fixation buffer (Cat. No. 420801) with 100% ice-cold methanol
Fixation/permeabilization with 100% ice-cold methanol alone is not recommended.

Antigen Details

Structure
CD340 is a 1255 amino acid protein with a predicted molecular weight of 137.9 kD. It is a glycosylated receptor-like transmembrane protein; due to glycosylation, the observed molecular weight by Western Blot is closer to 175-185 kD.
Distribution

Cellular membrane and also present in internalized vesicles

Function
Receptor, transcriptional regulator
Interaction
Homodimerizes
Heterodimerizes with EGFR, ErbB3, ErbB4, PIK3C2B, KPNB1, RANBP2, EEA1, CRM1, CLTC, MUC1, PTK6, RPA194, ACTB, PRKCABP, SRC, MYOC, CPNE3, SORL1, SH3BGRL
Ligand/Receptor
Heterodimerizes with other ERBB family members upon ligand binding, but does not directly bind ligand
Cell Type
Leukemia
Biology Area
Cell Biology, Immunology, Synaptic Biology
Molecular Family
Adhesion Molecules, CD Molecules
Antigen References
  1. Akiyama T, et al. 1986. Science. 232:1644-6.
  2. Bargmann CI, et al. 1986. Nature. 319:226-30.
  3. Pegram MD, et al. 1997. Oncogene. 15:537-47.
  4. Slamon DJ, et al. 1989. Science. 244:707-12.
  5. Leone F, et al. 2003. J Leukoc Biol. 74:593-601.
Gene ID
2064 View all products for this Gene ID
UniProt
View information about CD340 on UniProt.org

Related FAQs

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Go To Top Version: 1    Revision Date: 11.05.2025

For Research Use Only. Not for diagnostic or therapeutic use.

 

This product is supplied subject to the terms and conditions, including the limited license, located at www.biolegend.com/terms) ("Terms") and may be used only as provided in the Terms. Without limiting the foregoing, BioLegend products may not be used for any Commercial Purpose as defined in the Terms, resold in any form, used in manufacturing, or reverse engineered, sequenced, or otherwise studied or used to learn its design or composition without express written approval of BioLegend. Regardless of the information given in this document, user is solely responsible for determining any license requirements necessary for user’s intended use and assumes all risk and liability arising from use of the product. BioLegend is not responsible for patent infringement or any other risks or liabilities whatsoever resulting from the use of its products.

 

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This data display is provided for general comparisons between formats.
Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
If you need assistance with selecting the best format contact our expert technical support team.

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