DEFB4 Protein, Human, Recombinant

产品编号 TMPJ-01243

Defensins are cationic peptides. It is an important ingredient of the innate immune system. β-defensins are expressed on some leukocytes and epithelial surfaces. Four human β-Defensins have been identified to date: BD-1, BD-2, BD-3 and BD-4. β-defensins contain a six-cysteine motif, they forms three intra-molecular disulfide bonds. β-defensins are also chemoattractant towards immature dendritic cells and memory T cells. The β-defensin proteins are expressed as the C-terminal portion of precursors; they are released by proteolytic cleavage of a signal sequence.

DEFB4 Protein, Human, Recombinant

产品编号 TMPJ-01243

规格	价格	库存
10 μg	¥ 820	5日内发货
50 μg	¥ 2,480	5日内发货
500 μg	¥ 12,100	5日内发货
1 mg	¥ 17,400	5日内发货

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实验操作小课堂

常见问题解答

问抑制剂是否需要灭菌？

答如果您使用 DMSO 配制：不建议灭菌，DMSO 本身具有极强的杀菌力，配制好的溶液就是无菌溶液。如果您确实担心的，可以放置 4℃ 冰箱过夜放置即可；依然有顾虑的话，需用有机系专用滤膜过滤。如果您使用水配制：可以用 0.22 μm 滤膜过滤灭菌。

问收到粉状试剂粘壁严重，如何处理？

答建议您用离心机 3000 rpm下离心一会儿,将粉末收集到管底。

问抑制剂能否用于细胞实验？

答可以的，我们的抑制剂都可以用于细胞/体外实验。但有些化合物还没有用于细胞实验的文献，这种情况下，建议您先做预实验，确保研究的可行性。

问溶解度中写的“< 1 mg/mL refers to the slightly soluble or insoluble ”是什么意思？

答这句话指的是，如果溶解度 < 1 mg/mL，那我们就认为它是微溶或不溶的，这是针对写的“DMSO：Insoluble”或“DMSO：slightly soluble”这类化合物的。

问细胞实验中，抑制剂如何溶解？

答用 DMSO 配置较高浓度母液，母液存于 -80℃，建议多分装几管，一周内使用的存于 4℃，避免反复冻融。实验时用 pbs、生理盐水、培养基、水这些稀释，细胞实验DMSO的终浓度不超过 0.1%。如果超过 0.1%，则需要在做预试验的时候，先进行溶剂阴性对照实验，排除溶剂对细胞的影响。

产品信息

生物活性	Activity has not been tested. It is theoretically active, but we cannot guarantee it. If you require protein activity, we recommend choosing the eukaryotic expression version first.
产品描述	Defensins are cationic peptides. It is an important ingredient of the innate immune system. β-defensins are expressed on some leukocytes and epithelial surfaces. Four human β-Defensins have been identified to date: BD-1, BD-2, BD-3 and BD-4. β-defensins contain a six-cysteine motif, they forms three intra-molecular disulfide bonds. β-defensins are also chemoattractant towards immature dendritic cells and memory T cells. The β-defensin proteins are expressed as the C-terminal portion of precursors; they are released by proteolytic cleavage of a signal sequence.
种属	Human
表达系统	E. coli
标签	Tag Free
蛋白编号	Q8WTQ1
别名	β-Defensin 4,β-Defensin 104,hBD-4,Defensin β104,Defensin Beta 104,DEFB-4,DEFB4,DEFB104B,DEFB104A,DEFB104,Beta-Defensin 4,Beta-Defensin 104,BD-4
氨基酸序列	Glu23-Pro72
蛋白构建	Glu23-Pro72
蛋白纯度	Greater than 95% as determined by reducing SDS-PAGE. (QC verified)
分子量	9 KDa (reducing condition)
内毒素	< 0.1 ng/µg (1 EU/µg) as determined by LAL test.
缓冲液	Lyophilized from a solution filtered through a 0.22 μm filter, containing 20 mM PB, 130 mM NaCl, pH 7.4.
复溶方法	Reconstitute the lyophilized protein in distilled water. The product concentration should not be less than 100 μg/ml. Before opening, centrifuge the tube to collect powder at the bottom. After adding the reconstitution buffer, avoid vortexing or pipetting for mixing.
存储	Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at -80°C. For reconstituted protein solutions, the solution can be stored at -20°C to -80°C for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots.
运输方式	In general, Lyophilized powders are shipping with blue ice. Solutions are shipping with dry ice.
研究背景	Defensins are cationic peptides. It is an important ingredient of the innate immune system. β-defensins are expressed on some leukocytes and epithelial surfaces. Four human β-Defensins have been identified to date: BD-1, BD-2, BD-3 and BD-4. β-defensins contain a six-cysteine motif, they forms three intra-molecular disulfide bonds. β-defensins are also chemoattractant towards immature dendritic cells and memory T cells. The β-defensin proteins are expressed as the C-terminal portion of precursors; they are released by proteolytic cleavage of a signal sequence.

DEFB4 Protein, Human, Recombinant

DEFB4 Protein, Human, Recombinant

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