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Home > Products > N3501-At488-L

S1 SARS-CoV-2 sdAb - FluoTag-Q - N3501-At488-L

The spike or S protein from SARS-CoV-2 binds to the ACE2 receptor of host cells

This product was developed by   

 NanoTag-Biotechnologies

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.: N3501-At488-L
Amount: 200 µl
Price: $515.00
Cat. No. N3501-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 –80°C for up to 12 month
Applications
 
IP: N/A
ICC: 1 : 500
IHC: not tested yet
IHC-P: not tested yet
Label ATTO 488, one fluorophore coupled to one FluoTag
Clone W25
Subtype single domain
Immunogen recombinant S1-Spike protein from SARS-CoV-2 (UniProt Id: P0DTC2)
Specificity RBD of S1 protein from SARS-CoV-2

Cat. No.: N3501-At488-L
Amount: 200 µl
Price: $515.00
Background

This anti-S1 SARS-CoV-2 nanobody was developed by the team of Alejandro Rojas-Fernandez at the Institute of Medicine from the Universidad Austral de Chile. NanoTag acquired the exclusive license to produce this nanobody and make it available or research and development purposes. The FluoTag-Q anti-S1 SARS-CoV-2 is based on the W25 clone, which has a sub-nanomolar affinity for the SARS-CoV-2 S1 protein receptor binding domain (RBD) and can neutralize infections as it efficiently competes with ACE-2 receptor binding.

 

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


In FluoTag®-Q each fluorophore is coupled to exactly one FluoTag, which in turn binds to its target molecule in a monovalent fashion. The high binding affinity and a coupling efficiency of > 95% guarantees a highly linear relation between the number of target molecules and the intensity of fluorescence. This enables a direct count of the target molecule of interest. The fluorophore is located exceptionally close to the recognized epitope (< 1.5 nm), which is ideal for all microscopy techniques.
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