上海研盟生物科技有限公司PD-1抗體-程序性死亡1抗體*，主要應用于WB、IHC、IF、ELISA、流式細胞術等實驗中。說明書隨貨發(fā)送，您也可以直接我司在線客服索取?？头?/p>
簡單介紹：
中文名稱：程序性死亡1抗體
英文名稱：Anti-PD-1
產(chǎn)品編號：BYK-1867R
產(chǎn)品別名：CD279; CD279 antigen; hPD 1; hPD l; hPD-1; hSLE1; PD 1; PD-1; PD1; PDCD 1; PDCD1; PDCD1_HUMAN; Programmed cell death 1; Programmed cell death protein 1; Protein PD 1; Protein PD-1; SLEB2; Systemic lupus erythematosus susceptibility 2.
產(chǎn)品規(guī)格：0.1ml、0.2ml、1ml
產(chǎn)品用途：科研實驗
產(chǎn)品價格：請報價
說明書：請?zhí)砑涌头苯铀魅?/p>
抗體來源：該指標有兩種產(chǎn)品，一種是兔來源抗體，一種是鼠來源抗體
克隆類型：兔來源為多克隆抗體，鼠來源單克隆抗體
交叉反應：請索取說明書查看
性 狀：Lyophilized or Liquid
濃 度：1mg/1ml
亞 型:IgG
純化方法: affinity purified by Protein A
儲 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.
PD-1抗體-程序性死亡1抗體產(chǎn)品介紹：This gene encodes a cell surface membrane protein of the immunoglobulin superfamily. This protein is expressed in pro-B-cells and is thought to play a role in their differentiation. In mice, expression of this gene is induced in the thymus when anti-CD3 antibodies are injected and large numbers of thymocytes undergo apoptosis. Mice deficient for this gene bred on a BALB/c background developed dilated cardiomyopathy and died from congestive heart failure. These studies suggest that this gene product may also be important in T cell function and contribute to the prevention of autoimmune diseases.
CD279 is an immunoglobulin superfamily member, also known as Programmed Cell Death 1. Programmed Cell Death 1 is expressed on a subset of CD4-CD8 thymocytes, and on activated T and B cells. Programmed Cell Death 1 is thought to be involved in lymphocyte clonal selection and peripheral tolerance. The Programmed Cell Death 1 ligands, PDL1 (also known as B7H1) and PDL2 (B7DC), are members of the B7 immunoglobulin superfamily.
多肽的溶解與保存
一、凍干多肽的溶解
1、多肽溶解的主要問題是二級結(jié)構(gòu)的形成。雖然疏水肽鏈二級結(jié)構(gòu)的形成更明顯，但除zui短的肽鏈外，此現(xiàn)象產(chǎn)生在幾乎所有肽鏈,與極性無關。所以，溶解多肽的*個原則是使用無菌蒸餾水或去離子水，當然無氧水。多肽溶液可能遇到細菌降解，為防止此情況的發(fā)生，應溶解在無菌的蒸餾水中或用0.45或0.2孔徑的濾膜過濾除菌。含有Cys、Met、Trp的多肽很容易氧化，應溶于無氧的水中，無氧水可通過注入惰性氣體（氮、氦、氬）減壓除氣得到；
2、若多肽不溶于純水，超聲處理有助于打碎顆粒并增加溶解度。注意:超聲處理會引起溶液發(fā)熱或多肽降解；
3、若多肽含有多個堿性氨基酸，使用（1-10%）的乙酸水溶液：對于疏水性強的多肽，應使用50%的乙酸；
4、若多肽中含有大量酸性氨基酸，可用氨溶液（1-10%）或乙酸乙基*或重碳酸鹽等揮發(fā)性的堿性緩沖液溶解。pH值在層析前必須調(diào)整；
5、異丙醇和乙腈能溶解中等大小的多肽。若肽要上柱，有機溶劑的量必須很少否則將嚴重影響停留時間；
6、若多肽因含有Val、Leu、Met、Phe、Tyr、Ala等芳香鏈而高度疏水、或為中性肽時，DMF或DMSO等膜變性劑的使用，有利于多肽的溶解：
a.高濃度模變性劑通過破壞多肽的二級結(jié)構(gòu)而助溶；
b.膜變性劑適于多肽分析液的制備，但可能會對其生物活性的研究工作造成干擾；
c.DMF是變性劑（zui高濃度可達30%），滴加至多肽溶解；
d.反相層析法時，DMF將與洗脫液前鋒一起流出，根據(jù)入量的多少，峰值可能很高。大多數(shù)肽能在大量DMF流出后幾分鐘內(nèi)流出，若肽鏈很小，洗脫太早，多肽的量將很低。
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