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生物交聯(lián)劑DBCO-PEG4-Desthiobiotin質(zhì)量報(bào)告
閱讀:360 發(fā)布時(shí)間:2018-7-30DBCO-PEG4-Desthiobiotin
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.
Molecular weight | 719.87 |
Chemical composition | C39H51N5O8 |
CAS | N/A |
Solubility | DMSO, DMF, DCM, THF, Chloroform |
Purity | >95% (HPLC) |
Appearance | Colorless to slightly yellow oil |
Storage conditions | -20C |
Shipping conditions | Ambient temperature |
Desthiobiotin是一種單環(huán)、無硫生物素的類似物,它與鏈霉菌素結(jié)合的特異性幾乎相同,但親和力卻不如生物素(Kd分別為1011和1015M)。因此,在與自由生物素競(jìng)爭(zhēng)驅(qū)替的溫和條件下,可以很容易地、特別地從鏈霉毒素親和樹脂中分離出脫硫生物素。在生物樣品的下拉實(shí)驗(yàn)中,desthiobiotin的軟釋放特性也有助于減少內(nèi)源性生物素化分子的共提純,這些分子在游離生物素的目標(biāo)蛋白復(fù)合物的洗脫作用下仍與鏈球菌肽結(jié)合。
分子量 | 719.87 |
分子式 | C39H51N5O8 |
CAS | N/A |
溶解度 | DMSO, DMF, DCM, THF, Chloroform |
含量 | >95% (HPLC) |
外觀 | Colorless to slightly yellow oil |
儲(chǔ)存 | -20C |
運(yùn)輸 | Ambient temperature |
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