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 His tag antibody can recognize C-terminal, internal, and N-terminal His-tag fusion proteins.
A polyhistidine-tag is an amino acid motif in proteins that consists of at least five histidine (His) residues,
often at the N- or C-terminus of the protein. Monoclonal antibodies specific to six histidine tags can
greatly improve the effectiveness of several different kinds of immunoassays, helping researchers identify,
detect, and purify polyhistidine fusion proteins in bacteria, insect cells, and mammalian cells.
更新中...
答:可能的原因有:
1、目的蛋白有多个修饰位点,本身可以呈现多条带,建议查阅文献或进行生物信息学分析,获得蛋白序列的修饰位点信息,通过去修饰确定蛋白实际大小;
2、样本处理过程中目的蛋白发生降解,建议加入蛋白酶抑制剂;样本处理时在冰上操作;
3、杂蛋白多,建议处理目的蛋白;
4、抗体特异性不强,建议使用特异性强的抗体;
5、抗体孵育时间过久,建议减少抗体孵育时间;
6、二抗与抗原有交叉反应,建议选择合适的封闭物;
7、二聚体或多聚体存在,建议增加蛋白质变性过程及强度;
8、底物显色与曝光时间过长,建议缩短显色及曝光的时间。
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