Cell Signaling Technology

Product Pathways - TGF-beta/Smad Signaling

Smad2/3 Antibody #5678

sc-8332   smad   smad2   smad23   smad3  

No. Size Price
5678S 100 µl ( 10 western blots ) ¥3,250.00 现货查询 购买询价 防伪查询
5678 carrier free & custom formulation / quantityemail request
Applications Dilution Species-Reactivity Sensitivity MW (kDa) Isotype
W 1:1000 Human,Mouse,Rat,Monkey, Endogenous 52, 60 Rabbit
IP 1:50
F 1:100
IF-IC 1:100
ChIP 1:50

Species cross-reactivity is determined by western blot.

Applications Key: W=Western Blotting, IP=Immunoprecipitation, F=Flow Cytometry, IF-IC=Immunofluorescence (Immunocytochemistry), ChIP=Chromatin IP,


Species predicted to react based on 100% sequence homology: Xenopus,

Specificity / Sensitivity

Smad2/3 Antibody recognizes endogenous levels of total Smad2/3 protein and overexpressed Smad2/3 protein.


Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Ala208 of human Smad2 protein. Antibodies are purified by protein A and peptide affinity chromatography.




Confocal immunofluorescent analysis of HT-1080 cells, serum-starved (left), treated with Human TGF-β1 #8915 (1 μg/mL for 30 min; center) or treated with Human TGF-β1 and SB43152 (10 μg/mL for 30 min; right), using Smad2/Smad3 Antibody (green). Actin filaments were labeled with DY-554 phalloidin (red).

饥饿处理(左),经人TGF-β1 #8915 (1 μg/mL for 30 min; 中)或人 TGF-β1和SB43152 (10 μg/mL for 30 min; 右)后的HT-1080 细胞,使用Smad2/Smad3抗体进行激光共聚焦荧光分析。(绿色)。使用DY-554phalloidin(红色)标记肌动蛋白丝。

Flow Cytometry

Flow Cytometry

Flow cytometric analysis of HT-1080 cells using Smad2/3 Antibody (blue) compared to a Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (red).

使用Smad2/3抗体(蓝色)和(DA1E)IgG XP® 同型对照兔单抗#3900 (红色)对 HT-1080细胞进行流式细胞分析。

Western Blotting

Western Blotting

Western blot analysis of extracts from ACHN and HeLa cells using Smad2/3 Antibody.

使用Smad2/3抗体对ACHN和HeLa细胞提取物进行western blot分析。

Chromatin IP

Chromatin IP

Chromatin immunoprecipitations were performed with cross-linked chromatin from 4 x 106 HaCat cells treated with Human TGF-β3 #3706 (7 ng/ml) for 1 h and either 10 μl of Smad2/3 Antibody or 2 μl of Normal Rabbit IgG #2729 using SimpleChIP® Enzymatic Chromatin IP Kit (Magnetic Beads) #9003. The enriched DNA was quantified by real-time PCR using SimpleChIP® Human CDKN1A Intron 1 Primers #4669, SimpleChIP® Human ID1 Promoter Primers #5139, and SimpleChIP® Human α Satellite Repeat Primers #4486. The amount of immunoprecipitated DNA in each sample is represented as signal relative to the total amount of input chromatin, which is equivalent to one.

使用SimpleChIP® Enzymatic Chromatin IP Kit (磁柱) #9003将经过人TGF-β3 #3706 (7 ng/ml)1小时处理的4 x 106 HaCat 细胞,与10 μl Smad2/3抗体或2μl Normal Rabbit IgG#2729进行染色质免疫共沉淀。富集到的DNA随后使用SimpleChIP® 人CDKN1A Intron 1引物#4669,SimpleChIP® 人ID1启动子引物#5139和SimpleChIP® 人α Satellite Repeat Primers引物#4486进行荧光实时PCR定量。各样品沉淀得到的DNA量对比input染色质总量进行相对定量,Input的染色质量设定值为1.


Members of the Smad family of signal transduction molecules are components of a critical intracellular pathway that transmit TGF-β signals from the cell surface into the nucleus. Three distinct classes of Smads have been defined: the receptor-regulated Smads (R-Smads), which include Smad1, 2, 3, 5, and 8; the common-mediator Smad (co-Smad), Smad4; and the antagonistic or inhibitory Smads (I-Smads), Smad6 and 7 (1-5). Activated type I receptors associate with specific R-Smads and phosphorylate them on a conserved carboxy terminal SSXS motif. The phosphorylated R-Smad dissociates from the receptor and forms a heteromeric complex with the co-Smad (Smad4), allowing translocation of the complex to the nucleus. Once in the nucleus, Smads can target a variety of DNA binding proteins to regulate transcriptional responses (6-8).

Smad信号转导分子家族成员是胞内通路中TGF-β信号从细胞表面传送到细胞核的重要组成部分。Smad 可被分为三类:受体调控型Smad(简称R-Smad),主要包括Smad1,2,3,5和8;共同介导型Smad(co-Smad)包括Smad4;还有拮抗型或称抑制型Smad(I-Smads),包括Smad6和Smad7[1-5]。激活的I型受体与特异的R-Smad有关,并能在R-Smad的保守的C端SSXS基序处对其磷酸化。磷酸化的R-Smad与受体分离,再与co-Smad(Smad4)形成异侧复合物,使复合物迁移入核。一旦进入核内,Smad可以各种DNA结合蛋白为目标调控转录反应。[6-8]

  1. Heldin, C.H. et al. (1997) Nature 390, 465-71.
  2. Attisano, L. and Wrana, J.L. (1998) Curr Opin Cell Biol 10, 188-94.
  3. Derynck, R. et al. (1998) Cell 95, 737-40.
  4. Massagué, J. (1998) Annu Rev Biochem 67, 753-91.
  5. Whitman, M. (1998) Genes Dev 12, 2445-62.
  6. Wu, G. et al. (2000) Science 287, 92-7.
  7. Attisano, L. and Wrana, J.L. (2002) Science 296, 1646-7.
  8. Moustakas, A. et al. (2001) J Cell Sci 114, 4359-69.

Application References

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Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.

Cell Signaling Technology® is a trademark of Cell Signaling Technology, Inc.

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