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Anti-GFAP Antibody (Previously Covance catalog# SMI-23R)

Pricing & Availability
Clone
SMI 23 (See other available formats)
Regulatory Status
RUO
Other Names
Glial fibrillary acidic protein
Previously
Covance Catalog# SMI-23R
Isotype
Mouse IgG2b, κ
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Product Citations
publications
SMI-23_Ascites_GFAP_Antibody_1_101618
IHC staining of anti-GFAP antibody (clone SMI 23) on formalin-fixed paraffin-embedded mouse brain tissue. Following antigen retrieval using Retrieve-All Antigen Unmasking System 3: Acidic, 100X (Cat. No. 927601), the tissue was incubated with a 1:2000 dilution of the primary antibody overnight at 4°C. BioLegend´s Ultra-Streptavidin (USA) HRP kit (Multi-Species, DAB, Cat. No. 929901) was used for detection followed by hematoxylin counterstaining, according to the protocol provided. The image was captured with a 40X objective. Scale bar: 50 µm
  • SMI-23_Ascites_GFAP_Antibody_1_101618
    IHC staining of anti-GFAP antibody (clone SMI 23) on formalin-fixed paraffin-embedded mouse brain tissue. Following antigen retrieval using Retrieve-All Antigen Unmasking System 3: Acidic, 100X (Cat. No. 927601), the tissue was incubated with a 1:2000 dilution of the primary antibody overnight at 4°C. BioLegend´s Ultra-Streptavidin (USA) HRP kit (Multi-Species, DAB, Cat. No. 929901) was used for detection followed by hematoxylin counterstaining, according to the protocol provided. The image was captured with a 40X objective. Scale bar: 50 µm
  • SMI-23_Ascites_GFAP_Antibody_2_101618
    IHC staining of anti-GFAP antibody (clone SMI 23) on formalin-fixed paraffin-embedded rat brain tissue. Following antigen retrieval using Retrieve-All Antigen Unmasking System 3: Acidic, 100X (Cat. No. 927601), the tissue was incubated with a 1:2000 dilution of the primary antibody overnight at 4°C. BioLegend´s Ultra-Streptavidin (USA) HRP kit (Multi-Species, DAB, Cat. No. 929901) was used for detection followed by hematoxylin counterstaining, according to the protocol provided. The image was captured with a 20X objective. Scale bar: 50 µm
  • SMI-23_Ascites_GFAP_Antibody_3_101618
    Western blot of anti-GFAP antibody antibody (clone SMI 23). Lane 1: Molecular weight marker; Lane 2: 20 µg of human brain lysate; Lane 3: 20 µg of rat brain lysate; Lane 4: 20 µg of mouse brain lysate. The blot was incubated with a 1:2000 dilution of the primary antibody overnight at 4°C, followed by incubation with HRP labeled goat anti-mouse IgG (Cat. No. 405306). Enhanced chemiluminescence was used as the detection system.
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837301 100 µL 248€
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837302 500 µL 387€
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Description

Glial fibrillary acidic protein is an intermediate filament (IF) protein that is expressed by numerous cell types of the central nervous system (CNS) including astrocytes and ependymal cells. GFAP has also been found to be expressed in glomeruli and peritubular fibroblasts, Leydig cells of the testis, keratinocytes, osteocytes and chondrocytes and stellate cells of the pancreas and liver. GFAP is a type III IF protein that is closely related to its non-epithelial family members, vimentin, desmin, and peripherin, which are all involved in the structure and function of the cell’s cytoskeleton. GFAP is thought to help to maintain astrocyte mechanical strength, as well as the shape of cells.

Type III intermediate filaments are highly conserved and contain three domains, named the head, rod and tail domains. This rod domain coils around that of another filament to form a dimer, with the N-terminal and C-terminal of each filament aligned. Type III filaments such as GFAP are capable of forming both homodimers and heterodimers; GFAP can polymerize with other type III proteins or with neurofilament protein (NF-L). Interestingly, GFAP and other type III IF proteins cannot assemble with keratins, the type I and II intermediate filaments: in cells that express both proteins, two separate intermediate filament networks form.

To form networks, the initial GFAP dimers combine to make staggered tetramers, which are the basic subunits of an intermediate filament. The non-helical head and tail domains are necessary for filament formation. The head and tail regions have greater variability of sequence and structure. In spite of this increased variability, the head of GFAP contains two conserved arginines and an aromatic residue that are required for proper assembly.

Product Details
Technical Data Sheet (pdf)

Product Details

Verified Reactivity
Human, Mouse, Rat
Antibody Type
Monoclonal
Host Species
Mouse
Immunogen
Monoclonal antibody against glial fibrillary acidic protein (GFAP) derived from the Bigner-Eng clone MAb1B4.
Preparation
Ascites
Concentration
The concentration is not quantified as this product is sold as undiluted crude mouse ascites fluid. The concentration might vary from lot-to-lot and an estimated concentration would be 1-3 mg/ml.
Storage & Handling
Store at -20°C. Upon initial thawing, apportion into working aliquots and store at -20°C. Avoid repeated freeze-thaw cycles to prevent denaturing the antibody.
Application

IHC-P - Quality tested
WB - Verified
Recommended Usage

Each lot of this antibody is quality control tested by formalin-fixed paraffin-embedded immunohistochemical staining. For immunohistochemistry, a dilution range of 1:1000 - 1:2000 is suggested. For Western blotting, the suggested use of this reagent is 1:1000 - 1:2000 dilution. It is recommended that the reagent be titrated for optimal performance for each application.

Application Notes

SMI 23 provides for general visualization of GFAP in astrocytes and Bergman glia, it detects a more selected group of astrocytomas than mixtures of SMI 23, 24 and 25. The significance of this selectivity has not yet been explored. Possibilities are different characteristics of individual tumors or cooperativity of antibodies.

Additional Product Notes

Monoclonal antibody against glial fibrillary acidic protein (GFAP) derived from the Bigner-Eng clone MAb1B4

RRID
AB_2565373 (BioLegend Cat. No. 837301)
AB_2565373 (BioLegend Cat. No. 837302)

Antigen Details

Structure
GFAP is a 432 amino acid protein with a molecular mass of approximately 50 kD.
Distribution

Tissue distribution: GFAP is expressed by numerous cell types of the central nervous system (CNS) including astrocytes, ependymal cells, and Bergmann glia cells (protoplasmic astrocyte). GFAP is expressed in cells lacking fibronectin.
Cellular distribution: cytoskeleton and cytosol.

Function
GFAP is a class-III intermediate filament and a structural constituent of the cytoskeleton. It is a cell-specific marker that is used to distinguish astrocytes from other glial cells during the development of the CNS.
Cell Type
Astrocytes
Biology Area
Cell Biology, Neuroscience, Neuroscience Cell Markers
Molecular Family
Intermediate Filaments
Antigen References
  1. Khakh BS, Sofroniew MV. 2015. Nat. Neurosci. 18:942-52. PubMed
Gene ID
2670 View all products for this Gene ID
UniProt
View information about GFAP on UniProt.org

Other Formats

View All GFAP Reagents Request Custom Conjugation
Description Clone Applications
Anti-GFAP SMI 23 IHC-P,WB
Purified anti-GFAP SMI 23 IHC-P,WB
Go To Top Version: 3    Revision Date: 10/16/2018

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.

 

BioLegend, the BioLegend logo, and all other trademarks are property of BioLegend, Inc. or their respective owners, and all rights are reserved.

 

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Toll-Free Phone: 1-877-Bio-Legend (246-5343) Phone: (858) 768-5800 Fax: (877) 455-9587

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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