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anti-mScarlet-i sdAb - FluoTag-X2 - N1302-At488-L

mScarlet is a bright monomeric red fluorescent protein tag

This product was developed by   


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.: N1302-At488-L
Amount: 200 µl
Price: $515.00
Cat. No. N1302-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® 647N: λex 646 nm / λem 664 nm

ATTO®488, 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 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 Life Technologies Corporation.

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 Up to three months: -20°C
Up to 12 months: -80°C or below
Protect from light!
WB: not recommended
ICC: 1 : 500
IHC-P: not tested yet
FACS: yes
Label ATTO 488, two fluorophores coupled to one FluoTag
Clone 2B12
Subtype single domain
Immunogen Recombinant protein corresponding to AA 1 to 232 from sea anemone mScarlet-i
Specificity Specific for mScarlet-i and most common RFP derivatives

Cat. No.: N1302-At488-L
Amount: 200 µl
Price: $515.00

mScarlet-i is a basic, very bright red fluorescent protein, derived from a synthetic construct (1). It is reported to be a rapidly-maturing, constitutively fluorescent monomer with moderate acid sensitivity. It is a useful acceptor in Foerster resonance energy transfer (FRET) based imaging techniques (2).


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.