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GFAP sdAb - FluoTag-X2 - N3802-At488-L

GFAP is an astrocyte-specific type-III intermediate filament protein

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Camelid single domain antibodies (sdAbs) consist only of one antigen binding site of an Alpaca heavy chain antibody. With only ~15 kDa, these Tags are about 10-times smaller than conventional IgG antibody molecules.

Camelid single domain antibody
Cat. No.: N3802-At488-L
Amount: 200 µl
Price: $515.00
Cat. No. N3802-At488-L 200 µl purified antibody, lyophilized from PBS, fluorescence-labeled with ATTO® 488.

For many of the fluorescence labeled antibodies conjugated to ATTO® dyes from ATTO-TEC the established fluorescence detection systems can be used.

ATTO® 488: λex 500 nm / λem 520 nm
ATTO® 550: λex 554 nm / λem 576 nm
ATTO® 565: λex 564 nm / λem 590 nm
ATTO® 594: λex 603 nm / λem 626 nm
ATTO® 647N: λex 646 nm / λem 664 nm
 

ATTO®488, ATTO®565, ATTO®647N and ATTO®594 dyes are suitable for Stimulated Emission Depletion (STED) microscopy which allows higher resolution imaging compared to confocal laser scanning microscopy.
ATTO®488, ATTO®565 and ATTO®594 are also recommended for PALM and dSTORM high resolution microscopy.

This product or portions thereof is manufactured under license from ATTO-TEC GmbH.
ATTO is a trademarks of ATTO-TEC GmbH, Siegen/Germany.
Purchase of reagents related to the AbberiorStar technology from Synaptic Systems GmbH provides a license for non-profit and in-house research use only. Any application of above mentioned technology for commercial purpose requires a separate license from ATTO-TEC GmbH.

 Albumin was added for stabilization. For reconstitution add 200 µl H2O. Either add 1:1 (v/v) glycerol, then aliquot and store at -20°C until use, or store aliquots at -80°C without additives.
Reconstitute immediately upon receipt! Avoid bright light when working with the antibody to minimize photo bleeching of the fluorescent dye.
Storage Shelf-Life: 3 month at -20°C, 12 moth at -80°C or below
Applications
 
WB: not recommended
IP: N/A
ICC: 1 : 500 gallery  
IHC: 1 : 500
IHC-P: not tested yet
Label ATTO 488, two fluorophores coupled to one FluoTag
Clone 1D12
Subtype single domain
Immunogen Recombinant protein corresponding to AA 1 to 432 from human GFAP (UniProt Id: P14136)
Reactivity Reacts with: human (P14136), rat (P47819), mouse (P03995).
Other species not tested yet.
Specificity Specific for GFAP, detects all isoforms.
Matching control protein/peptide 173-0P

References for GFAP sdAb - N3802-At488-L

Simple and Highly Efficient Detection of PSD95 Using a Nanobody and Its Recombinant Heavy-Chain Antibody Derivatives.
Kilisch M, Gere-Becker M, Wüstefeld L, Bonnas C, Crauel A, Mechmershausen M, Martens H, Götzke H, Opazo F, Frey S
International journal of molecular sciences (2023) 248: . N3802-At488-L ICC; tested species: rat,mouse
Cat. No.: N3802-At488-L
Amount: 200 µl
Price: $515.00
Simple and Highly Efficient Detection of PSD95 Using a Nanobody and Its Recombinant Heavy-Chain Antibody Derivatives.
Kilisch M, Gere-Becker M, Wüstefeld L, Bonnas C, Crauel A, Mechmershausen M, Martens H, Götzke H, Opazo F, Frey S
International journal of molecular sciences (2023) 248: . N3802-At488-L ICC; tested species: rat,mouse
ICC
Background

Glial fibrillary acidic protein GFAP is a glial-specific member of the intermediate filament protein family. This group comprises celltype-specific filamentous proteins with similar structure and function as scaffold for cytoskeleton assembly and maintenance.
Frequently, neural stem cells also express GFAP. In addition many types of brain tumors, probably derived from astrocytic cells, heavily express GFAP. This protein is also found in the lens epithelium, Kupffer cells of the liver, in some cells in salivary tumors and others.
Point-mutations in the GFAP gene have been correlated to Alexander disease a fatal leukoencephalopathy that leads to the dysmyelination or demyelination of the central nervous system.

 

Unlabeled variants and several modifications of sdAbs like biotin, fluorophore or DBCO conjugation are available.


In FluoTag®-X2 two fluorophore molecules are site-specifically coupled to each FluoTag molecule. Therefore, the reagent simultaneously targets two  fluorophores to the protein of interest, which ensures up to two-fold („2X“)-brighter signals. Owing to the small size of the FluoTags, the distance between the target epitope and each fluorophore is ~ 3 nm.
In comparison to detection systems using conventional antibodies, FluoTag-X can thus improve the localization accuracy by 10-15 nm. Both features - superior brightness and precise fluorophore placement - render the FluoTag-X products excellent tools for all microscopy techniques.
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