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| 產(chǎn)地 | 進口、國產(chǎn) |
| 品牌 | 上海莼試 |
| 保存條件 | Store at -20 °C |
| 貨號 | CS11866 |
| 應用范圍 | WB=1:100-500 ELISA=1:500-1000 IP=1:20-100 IHC-P=1:100-500 IHC-F=1:100-500 IF=1:100-500 |
| CAS編號 | |
| 抗體名 | Anti-phospho-TOPO II Alpha (Ser1106) |
| 克隆性 | |
| 靶點 | 詳見說明書 |
| 適應物種 | 詳見說明書 |
| 形態(tài) | 詳見說明書 |
| 宿主 | 詳見說明書 |
| 亞型 | IgG |
| 標識物 | 詳見說明書 |
| 濃度 | 1mg/1ml% |
| 免疫原 | KLH conjugated Synthesised phosphopeptide derived from human TOPO II Alpha around the phosphorylation site of Ser1106 |
產(chǎn)品訂購信息：
英文名稱 Anti-phospho-TOPO II Alpha (Ser1106)
中文名稱 磷酸化DNA拓普西異構酶Ⅱ抗體規(guī)格
別 名 DNA topoisomeraseⅡalpha; DNA topoisomerase 2-alpha; DNA topoisomerase II, alpha isozyme; TOP2; TP2A; TOP2A; DNA topoisomerase II 170 kD; DNA topoisomerase II alpha isozyme; DNA Topoisomerase2; TOP 2A; TopII alpha; Topo II alpha; Topoisomerase DNA II alpha 170kDa; Topoisomerase II alpha 170 kDa; TOP2A_HUMAN.
濃 度 1mg/1ml
規(guī) 格 0.1ml/100μg
抗體來源 Rabbit
克隆類型 polyclonal
交叉反應 Human
產(chǎn)品類型 一抗 磷酸化抗體
研究領域 細胞生物 免疫學 轉錄調節(jié)因子 激酶和磷酸酶
蛋白分子量 predicted molecular weight: 174kDa
性 狀 Lyophilized or Liquid
免 疫 原 KLH conjugated Synthesised phosphopeptide derived from human TOPO II Alpha around the phosphorylation site of Ser1106
亞 型 IgG
純化方法 affinity purified by Protein A
儲 存 液 0.01M PBS, pH 7.4 with 10 mg/ml BSA and 0.1% Sodium azide
磷酸化DNA拓普西異構酶Ⅱ抗體規(guī)格 產(chǎn)品應用 WB=1:100-500 ELISA=1:500-1000 IP=1:20-100 IHC-P=1:100-500 IHC-F=1:100-500 IF=1:100-500
（石蠟切片需做抗原修復）
not yet tested in other applications.
optimal dilutions/concentrations should be determined by the end user.
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.
Important Note This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
產(chǎn)品介紹 This gene encodes a DNA topoisomerase, an enzyme that controls and alters the topologic states of DNA during transcription. This nuclear enzyme is involved in processes such as chromosome condensation, chromatid separation, and the relief of torsional stress that occurs during DNA transcription and replication. It catalyzes the transient breaking and rejoining of two strands of duplex DNA which allows the strands to pass through one another, thus altering the topology of DNA. Two forms of this enzyme exist as likely products of a gene duplication event. The gene encoding this form, alpha, is localized to chromsome 17 and the beta gene is localized to chromosome 3. The gene encoding this enzyme functions as the target for several anticancer agents and a variety of mutations in this gene have been associated with the development of drug resistance. Reduced activity of this enzyme may also play a role in ataxia-telangiectasia.
Function : Control of topological states of DNA by transient breakage and subsequent rejoining of DNA strands. Topoisomerase II makes double-strand breaks. Essential during mitosis and meiosis for proper segregation of daughter chromosomes.
Subunit : Homodimer. Interacts with COPS5.
Subcellular Location : Cytoplasm. Nucleus, nucleoplasm. Note=Generally located in the nucleoplasm.
Post-translational modifications : Phosphorylation has no effect on catalytic activity. However, phosphorylation at Ser-1106 by CSNK1D/CK1 promotes DNA cleavable complex formation.
Similarity : Belongs to the type II topoisomerase family.
Contains 1 Toprim domain.
Database links : UniProtKB/Swiss-Prot: P11388.3
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抗體的生物素化標記實驗要點：
1. 磷酸化DNA拓普西異構酶Ⅱ抗體規(guī)格 如在反應混合液中有疊氮鈉或游離氨基存在,會抑制標記反應。因此,蛋白質在反應前要對 0.1mol/L碳酸氫鈉緩沖液或0.5mol/L硼酸緩沖液充分透析；
2.所用的NHSB及待生物素化蛋白質之間的分子比按蛋白質表面的ε-氨基的密度會有所不同,選擇不當則影響標記的效率,應先用幾個不同的分子比來篩選最適條件；
3.用NHSB量過量也是不利的,抗原的結合位點可能因此被封閉,導致抗體失活；
4.由于抗體的氨基不易接近可能造成生物素化不足,此時可加入去污劑如 Triton x-100, Tween20等；
5.當游離ε-氨基(賴氨酸殘基的氨基)存在于抗體的抗原結合位點時,或位于酶的催化位點時,生物素化會降低或損傷抗體蛋白的結合力或活性；
6.生物素還可能與不同的功能基團,如羰基、氨基、巰基、異咪唑基及苯酚基,也可與糖基共價結合；
7.交聯(lián)反應后,應充分透析,否則,殘余的生物素會對生物素化抗體與親和素的結合產(chǎn)生競爭作用；
8.在細胞的熒光標記實驗中,中和親和素的本底低,但由于鏈霉親和素含有少量正電荷,故對某些細胞可導致高本底。
抗體的鑒定：
1）磷酸化DNA拓普西異構酶Ⅱ抗體規(guī)格 抗體的效價鑒定：不管是用于診斷還是用于,制備抗體的目的都是要求較高效價。不同的抗原制備的抗體,要求的效價不一。鑒定效價的方法很多,包括有試管凝集反應,瓊脂擴散試驗,酶聯(lián)免疫吸附試驗等。常用的抗原所制備的抗體一般都有約成的鑒定效價的方法,以資比較。如制備抗抗體的效價,一般就采用瓊脂擴散試驗來鑒定。
2）抗體的特異性鑒定：抗體的特異性是指與相應抗原或近似抗原物質的識別能力?？贵w的特異性高,它的識別能力就強。衡量特異性通常以交叉反應率來表示。交叉反應率可用競爭抑制試驗測定。以不同濃度抗原和近似抗原分別做競爭抑制曲線,計算各自的結合率,求出各自在IC50時的濃度,并按公式計算交叉反應率。
如果所用抗原濃度IC50濃度為pg/管,而一些近似抗原物質的IC50濃度幾乎是無窮大時,表示這一抗血清與其他抗原物質的交叉反應率近似為0,即該血清的特異性較好。
3）抗體親和力：是指抗體和抗原結合的牢固程度。親和力的高低是由抗原分子的大小,抗體分子的結合位點與抗原決定簇之間立體構型的合適度決定的。有助于維持抗原抗體復合物穩(wěn)定的分子間力有氫鍵,疏水鍵,側鏈相反電荷基因的庫侖力,范德華力和空間斥力。親和力常以親和常數(shù)K表示,K的單位是L/mol?？贵w親和力的測定對抗體的篩選,確定抗體的用途,驗證抗體的均一性等均有重要意義。
