His-SDF-1αPDF
Catalog Number:
E13-005-1Amount:
10μgBackground:
SDF-1 (stromal cell-derived factor-1), also called CXCL12, is small cytokine belonging to the chemokine family. The two forms, SDF-1 α/CXCL12a and SDF-1 β/CXCL12b, are produced in cells by alternate splicing of the same gene. SDF-1 signal through its receptor CXCR4, and have been shown tochemoattract B and T cells, induce migration of CD34+ stem cells. Additionally, SDF-1 and its receptor CXCR4 are involved in human disease states (e.g. HIV/AIDS) and cancer metastasis.Gene ID:
NP_954637Amino acid sequence:
MGSSHHHHHHSSGLVPRGSHMENLYFQGKPVSLSYRCPCRFFESHVARANVKHLKILNTPNCALQIVARLKNNNRQVCIDPKLKWIQEYLEKALNKActivity:
ELISA to measure SDF-1 binding activity (Figure B). SDF-1 was immobilized on the plate and was detected by anti SDF-1 antibody(Santacruz sc-6193).Form of Antibody:
Lyophilized from a 0.22μm filtered solution at a concentration of 1mg/ml in PBS.Reconstitution:
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water to a concentration of 1.0 mg/ml.Shipping&Stablity:
The Product is shipped at ambient temperature. Upon reconstitution, the preparation is stable for up to 1 month at 2-8°C. For long term storage, apportion the reconstituted preparation into working aliquots and store at -20°C to -70°C. Avoid repeated freeze/thaw cycles.
Price:
125$Research Area:
Stem Cells Cancer Cardiovascular Cell Biology Epigenetics & Nuclear Signaling Developmental Biologys Immunology Drug Discovery Products Metabolism Neuroscience Signal Transduction

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利用NheI和HindIII双酶切插入目的片段,为什么双酶切有目的片段和切开的质粒,测序却没有?
并且测序后在NheI位点后的序列变成了-GGCTAGGTAC-Kpn位点(CGTTTAAACTTAAGCTTG消失。之前和之后的序列都相符),之间的怎么都没了?
请教高人,这样的问题怎么解决?
多谢
你所说的“测序酶”在一般情况下就是“聚合酶”。
因为目前的的测序方法主要就是借助聚合反应。
当然,有些测序方法(比如曾经的SOLiD系统)是利用连接反应,那么它用的“测序酶”肯定是连接酶。
估计,也就是这个原因有人把它。
两个基因大小分别230kb和450kb,酶切后,450kb的有目的条带,但很弱,230kb的质粒条带亮,其下方有一很微弱条带,用的酶分别是:Ncol和Spel体系是(Takara,两个酶切体系不同,用的官网推荐体系):
NcoI1μl
Spel1μl
10×KBuffer2μl
0.1%BSA2μl
DNA3ul
灭菌水upto20μl37℃4h电泳1h
期待着高手们的指点,谢谢。
【之前构建的4个重组质粒里也有两个出现这样的问题(aagtcc变成agtcc),但是酶切能切出插入的片段】
目前问测序公司得到的答复是样品可能不是单克隆,测序结果是不准确的,建议重新挑取单克隆测序。
不知道还有没有别的方法?
●应用酶水解多肽不会破坏氨基酸,也不会发生消旋化。水解的产物为较小的肽段。向左转|向右转

