| 產(chǎn)品編號(hào) | bs-0882R-BF647 |
| 英文名稱(chēng)1 | Rabbit Anti-Shiga-like toxin IIe variant subunit A/BF647 Conjugated antibody |
| 中文名稱(chēng) | BF647標(biāo)記的大腸桿菌志賀樣毒素Ⅱ型突變體（O139菌型）抗體 |
| 別 名 | shiga-like toxin II variant chain A precursor. |
| 規(guī)格價(jià)格 | 100ul/2980元 購(gòu)買(mǎi) 大包裝/詢(xún)價(jià) |
| 說(shuō) 明 書(shū) | 100ul |
| 研究領(lǐng)域 | 細(xì)菌及病毒 |
| 抗體來(lái)源 | Rabbit |
| 克隆類(lèi)型 | Polyclonal |
| 交叉反應(yīng) | Escherichia Coli, |
| 產(chǎn)品應(yīng)用 | IF=1:50-200
not yet tested in other applications. optimal dilutions/concentrations should be determined by the end user. |
| 分 子 量 | 36kDa |
| 性 狀 | Lyophilized or Liquid |
| 濃 度 | 1mg/ml |
| 免 疫 原 | KLH conjugated synthetic peptide derived from Escherichia coli Shiga-like toxin IIe variant subunit A |
| 亞 型 | IgG |
| 純化方法 | affinity purified by Protein A |
| 儲(chǔ) 存 液 | 0.01M TBS(pH7.4) with 1% BSA, 0.03% Proclin300 and 50% Glycerol. |
| 保存條件 | Store at -20 °C for one year. Avoid repeated freeze/thaw cycles. The lyophilized antibody is stable at room temperature for at least one month and for greater than a year when kept at -20°C. When reconstituted in sterile pH 7.4 0.01M PBS or diluent of antibody the antibody is stable for at least two weeks at 2-4 °C. |
| 產(chǎn)品介紹 |
background: Shiga-like toxin type II (SLT-II) and Shiga-like toxin type II variant (SLT-IIv) are cytotoxins produced by certain strains of Escherichia coli. Nucleotide sequence analyses had revealed that the structural genes for the A subunit and B subunit of SLT-II or SLT-IIv are arranged in an operon. Primer extension and S1 nuclease protection analyses identified a promoter for the slt-II operon 118 bases upstream of the slt-IIA gene. The slt-IIv promoter was demonstrated to be identical to the slt-II promoter. The slt-II and slt-IIv promoters differed significantly from the previously characterized Shiga toxin (stx) and Shiga-like toxin type 1 (slt-I) promoters. The transcriptional efficiencies of the stx and slt-II promoters were compared in fusions to the chloramphenicol acetyltransferase gene, and constitutive expression of the slt-II promoter was found to be equivalent to derepressed expression of the stx promoter. In contrast to the stx and slt-I promoters, the slt-II and slt-IIv promoters did not contain sequences for binding of the Fur repressor protein, and SLT-II production was not determined by iron levels in the media in various E. coli strains with wild-type or mutant ferric uptake regulation (fur) alleles. Northern (RNA) blot analysis demonstrated a single mRNA transcript for the slt-II operon, and further analysis of the slt-II operon by primer extension did not reveal an independent promoter for the B subunit gene. A putative rho-independent transcription terminator was identified 274 bases downstream of slt-IIB. These data indicated that the slt-II and slt-IIv operons differ from the stx/slt-I operon in regulation of their transcription by iron. Whether these regulatory differences enable the type I and type II groups of Shiga-like toxins to perform different roles in the pathogenesis of infectious diseases remains to be established. Database links:
Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. 水腫病大腸桿菌志賀樣毒素Ⅱ型體，屬人、豬、羊、馬等哺乳動(dòng)物共患毒素Ⅱ型體。 |
