WB
N/A
N/A
IgG
PBS, pH 7.4, containing 0.02% sodium azide as Preservative and 50% Glycerol. Store at -20°C.
Do not aliquot the antibody.
WB: 1:5,000
The Flag tag antibody can recognize C-terminal, internal, and N-terminal Flag-tag fusion proteins.
The DYKDDDDK peptide (Flag-tag) is a small component of an epitope which does not appear to interfere with thebioactivity
or the biodistribution of the recombinant protein. It has been used extensively as a general epitope tag in expressionvectors.
It can be used for affinity chromatography, then used to separate recombinant, overexpressed protein from wild-type
proteinex pressed by the host organism. It can also be used in the isolation of protein complexes with multiple subunits.A
Flag-tag can beused in many different assays that require recognition by an antibody. If there is no antibody against the
studied protein, adding a Flag-tag to this protein allows one to follow the protein with an antibody against the Flag sequence
更新中...
答：可能的原因有：
1、目的蛋白有多個修飾位點，本身可以呈現多條帶，建議查閱文獻或進行生物信息學分析，獲得蛋白序列的修飾位點信息，通過去修飾確定蛋白實際大小；
2、樣本處理過程中目的蛋白發生降解,建議加入蛋白酶抑制劑；樣本處理時在冰上操作；
3、雜蛋白多，建議處理目的蛋白；
4、抗體特異性不強，建議使用特異性強的抗體；
5、抗體孵育時間過久，建議減少抗體孵育時間；
6、二抗與抗原有交叉反應，建議選擇合適的封閉物；
7、二聚體或多聚體存在，建議增加蛋白質變性過程及強度；
8、底物顯色與曝光時間過長，建議縮短顯色及曝光的時間。
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