Fluorescent ligand that binds to the α4β1 integrin (VLA-4) with high affinity (Kd values are 0.3 nM and 12 nM for binding to U937 cells in the presence and absence of Mn2+ respectively). Used to detect VLA-4 affinity and conformational changes.
|Sequence||LDVPAAK (Modifications: Leu-1 N-2-[4-[[[(2-methylphenyl)amino]carbonyl]amino]phenyl]acetyl-, Lys-6 N-FITC conjugate)|
|Storage||Store at -20°C|
The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.
|Solubility||Soluble to 1 mg/ml in PBS (pH 7.4)|
Preparing Stock Solutions
The following data is based on the product molecular weight 1368.54. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.
|Concentration / Solvent Volume / Mass||1 mg||5 mg||10 mg|
|1 mM||0.73 mL||3.65 mL||7.31 mL|
|5 mM||0.15 mL||0.73 mL||1.46 mL|
|10 mM||0.07 mL||0.37 mL||0.73 mL|
|50 mM||0.01 mL||0.07 mL||0.15 mL|
References are publications that support the products' biological activity.
Chigaev et al (2001) Real time analysis of the affinity regulation of alpha 4-integrin. The physiologically activated receptor is intermediate in affinity between resting and Mn2+ or antibody activation. J.Biol.Chem. 276 48670 PMID: 11641394
Njus et al (2009) Conformational mAb as a tool for integrin ligand discovery. Assay Drug Dev.Technol. 7 507 PMID: 19754304
Chigaev et al (2003) FRET detection of cellular α4-integrin conformational activation. Biophys.J. 85 3951 PMID: 14645084
If you know of a relevant reference for LDV FITC, please let us know.
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