| 来源 | 用途 | 交叉反应性 | 理论分子量 | 实际分子量 |
| Rabbit | WB, IHC | H, M, R | 28/40kDa | 28/50kD |
WB, Western blot; IP, Immunoprecipitation; IF, Immunofluorescence; IHC, Immunohistochemistry; ICC, Immunocytochemistry; FC, Flow Cytometry; ChIP, Chromatin Immunoprecipitation Assay; ChIP-seq, ChIP-sequencing.
H, Human; M, Mouse; R, Rat; C, Chicken; Cw, Cow; Dg, Dog; Gp, Guinea pig; Hm, Hamster; Hr, Horse; Mk, Monkey; Pg, Pig; Rb, Rabbit; S, Sheep; Z, Zebrafish; All, all species expected.
配套提供了Western一抗稀释液，可以用于Western检测或其它适当用途时的一抗稀释。
建议抗体使用时的稀释比例如下(实际使用时需根据抗原水平的高低作适当调整)：
| WB | IP | IF | IHC | ICC | FC | ChIP | ChIP-seq |
| 1:500-1:2000 | - | - | 1:50-1:200 | 1:50-1:200 | - | - | - |
抗体详细信息如下:
| About this Antibody | |
| Name | XBP1(S) Rabbit Polyclonal Antibody |
| Category | Rabbit Polyclonal Antibody (pAb); Primary antibody |
| Isotype | IgG |
| Purification method | Affinity purification |
| Positive samples | HeLa, C2C12, C6 |
| Cellular location | - |
| Customer validation | - |
| About the Immunogen | |
| Immunogen | A synthetic peptide corresponding to a sequence within amino acids 300-376 of human XBP1 (NP_001073007.1). |
| Sequence | SLSPFSDMSSLLGVNHSWEDTFANELF |
| Gene ID | 7494 |
| Swiss Prot | P17861 |
| Synonyms | XBP1; TREB-5; TREB5; XBP-1; XBP2; X-box-binding protein 1 |
| Category | Transcription Factors; Translational Control |
| Background | Following protein synthesis, secretory, intra-organellar, and transmembrane proteins translocate into the endoplasmic reticulum (ER) where they are post-translationally modified and properly folded. The accumulation of unfolded proteins within the ER triggers an adaptive mechanism known as the unfolded protein response (UPR) that counteracts compromised protein folding. The transmembrane serine/threonine kinase IRE1, originally identified in Saccharomyces cerevisiae, is a proximal sensor for the UPR that transmits the unfolded protein signal across the ER membrane. The human homolog IRE1α was later identified and is ubiquitously expressed in human tissues. Upon activation of the unfolded protein response, IRE1α splices X-box binding protein 1 (XBP-1) mRNA through an unconventional mechanism using its endoribonuclease activity. This reaction converts XBP-1 from an unspliced XBP1(U) isoform to the spliced XBP1(S) isoform, which is a potent transcriptional activator that induces expression of many UPR responsive genes. XBP1 is a ubiquitously expressed member of the bZIP family of proteins. The spliced form of XBP1(S) is a 376 amino acid (aa), 55 kDa transcription factor essential for the unfolded protein response and unspliced XBP1(U) isoform is a 261 amino acid (aa). XBP1(S) is formed during endoplasmic reticulum stress by IRE-1-mediated splicing that creates a 210 aa substitution for XBP1 aa 161-261. XBP1(S) contains a basic DNA binding motif (aa 72-94) and a leucine-zipper domain (aa 98-126). Within the region used as an immunogen, human XBP1(S) shares 96% aa sequence identity with mouse XBP1(S). XBP1(S) Rabbit Polyclonal Antibody recognizes spliced isoform of XBP1 protein. |
包装清单：
| 产品编号 | 产品名称 | 包装 |
| AF8366 | XBP1(S) Rabbit Polyclonal Antibody | 50μl |
| AZ050 | Western一抗稀释液 | 50ml |
| — | 说明书 | 1份 |
保存条件：
XBP1(S) Rabbit Polyclonal Antibody -20ºC保存，Western一抗稀释液-20ºC或4ºC保存，一年有效。Western一抗稀释液优先推荐4ºC保存，长期不使用可以考虑-20ºC保存，但冻融可能会导致出现轻微的浑浊和少量不溶物。
注意事项：
如果本抗体用于Western blot (WB)、免疫荧光(IF)、免疫细胞化学(ICC)等实验，请注意回收使用过的稀释抗体。回收的抗体通常至少可以重复使用5-10次。稀释后的抗体，包括已经使用过的稀释抗体，请4℃保存。
回收后重复使用的抗体，使用方法同新鲜稀释的抗体。如果在重复使用过程中发现抗体出现轻微混浊现象，可以10,000g离心1-3分钟，取上清用于后续检测。如果回收的抗体出现明显的絮状物或长霉长菌等情况，则可以考虑废弃该抗体。
提供的Western一抗稀释液也可以用于免疫荧光(IF)、免疫组化(IHC)、免疫细胞化学(ICC)等适当用途。如果希望获得最佳的检测效果，请考虑使用上述检测专用的一抗稀释液。
本产品仅限于专业人员的科学研究用，不得用于临床诊断或治疗，不得用于食品或药品，不得存放于普通住宅内。
为了您的安全和健康，请穿实验服并戴一次性手套操作。
使用说明：
请根据抗体的实际用途选择相应的使用方法。
1. Western检测：
a. 按照推荐的稀释比例用碧云天提供的Western一抗稀释液稀释抗体。
b. 把经过封闭的蛋白膜与稀释好的一抗4℃缓慢摇动过夜或室温缓慢摇动2小时，确保稀释的抗体至少能在摇动的瞬间覆盖蛋白膜。
c. 回收稀释的一抗，4℃保存以备下次继续使用。
d. 按照Western的实验步骤进行后续的洗涤、二抗孵育、洗涤和检测等操作。具体操作可以参考如下网页：
http://www.beyotime.com/western.htm
2. 免疫染色：
可以使用碧云天生产的免疫染色一抗稀释液(P0103)稀释抗体，使用后注意回收稀释好的一抗，具体操作可以参考如下网页：http://www.beyotime.com/support/immunol-staining.htm
3. 其它实验操作请自行参考适当的protocol进行。
4. 代表性图片：
Fig. 1. Western blot analysis of extracts of various cell lines, using XBP1s antibody at 1:1000 dilution.HeLa cells were treated by Tunicamycin (2 μg/ml) for 8 hours.C6 cells were treated by Tunicamycin (2 μg/ml) for 8 hours.
Secondary antibody: HRP-labeled Goat Anti-Rabbit IgG(H+L) (A0208) at 1:10000 dilution.
Lysates/proteins: 25μg per lane.
Blocking buffer: QuickBlock™ Blocking Buffer (P0231).
Detection: BeyoECL Star (P0018A).
Exposure time:1s.
