| Identification | Back Directory | [Name]
Desthiobiotin-PEG4-Alkyne | [CAS]
1802907-99-8 | [Synonyms]
Desthiobiotin-PEG4-Alkyne
4-Imidazolidinehexanamide, 5-methyl-2-oxo-N-3,6,9,12-tetraoxapentadec-14-yn-1-yl-, (4R,5S)-rel- | [Molecular Formula]
C21H37N3O6 | [MDL Number]
MFCD28505545 | [MOL File]
1802907-99-8.mol | [Molecular Weight]
427.54 |
| Hazard Information | Back Directory | [Description]
Desthiobiotin is a single-ring, sulfur-free analog of biotin that binds to streptavidin with nearly equal specificity but less affinity than biotin (Kd = 1011 vs. 1015M, respectively). Consequently, desthiobiotinylated proteins can be eluted readily and specifically from streptavidin affinity resin using mild conditions based on competitive displacement with free biotin. For pull-down experiments with biological samples, this soft-release characteristic of desthiobiotin also helps to minimize co-purification of endogenous biotinylated molecules, which remain bound to streptavidin upon elution of the target protein complexes with free biotin. |
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