Recombinant Human LIF
產品編號
產品名稱
產品包裝
產品價格
XY354-1mg
1mg
14411.00元
Species
Gene ID
Accession
Source
Length
MW
Tag
Human
3976
P15018
E. coli
180aa
19.7kDa
－
About this protein
Name
Recombinant Human LIF (Recombinant Human Leukemia Inhibitory Factor; rHuLIF)；重組人白血病抑制因子
Synonyms
CDF; D factor; DIA; differentiation inhibitory activity; differentiation stimulating factor; Differentiation-stimulating factor; Emfilermin; HILDAcholinergic differentiation factor; leukemia inhibitory factor; leukemia inhibitory factor (cholinergic differentiation factor); Melanoma-derived LPL inhibitor; MLPLI
Purity
>98% by SDS-PAGE and HPLC analyses.
Biological Activity
Fully biologically active when compared to standard. The ED50 as determined by the dose-dependent proliferation of human TF-1 cells is less than 0.1ng/ml, corresponding to a specific activity of >1.0×107IU/mg.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Formulation
Lyophilized from a 0.2μM filtered concentrated solution in PBS, pH7.4.
Endotoxin
Less than 1EU/μg of rHuLIF as determined by LAL method.
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-0.2mg/ml. Stock solutions should be apportioned into working aliquots and stored at ≤-20℃. Further dilutions should be made in appropriate buffered solutions.
Category
Cytokine
Background
Leukemia inhibitory factor (LIF) is a member of Interleukin 6 family. This protein is mainly expressed in the trophectoderm of the developing embryo, with its receptor LIFR expressed throughout the inner cell mass. LIF has the capacity to induce terminal differentiation in leukemic cells. Its activities include the induction of hematopoietic differentiation in normal and myeloid leukemia cells, the induction of neuronal cell differentiation, and the stimulation of acute-phase protein synthesis in hepatocytes. LIF is used in mouse embryonic stem cell culture, because that removal of LIF pushes stem cells toward differentiation, but they retain their proliferative potential or pluripotency. It is also used in phase II clinical trial, which can assist embryo implantation in women who have failed to become pregnant despite assisted reproductive technologies (ART). Mature human LIF (180a.a.) shares 78%, 82%, 91%, 88% and 87%a.a. sequence identity with mouse, rat, canine, bovine, and porcine LIF, respectively.
Amino Acid Sequence
SPLPITPVNA TCAIRHPCHN NLMNQIRSQL AQLNGSANAL FILYYTAQGE PFPNNLDKLC GPNVTDFPPF HANGTEKAKL VELYRIVVYL GTSLGNITRD QKILNPSALS LHSKLNATAD ILRGLLSNVL CRLCSKYHVG HVDVTYGPDT SGKDVFQKKK LGCQLLGKYK QIIAVLAQAF
包裝清單:
包裝
XY354-5μg
5μg
XY354-25μg
25μg
XY354-100μg
100μg
-
說明書
1份
保存條件: -20℃或更低溫度保存，至少一年有效。由于蛋白的每次凍融均會引起部分失活，所以**配制成相應濃度的儲存液后(請根據產品簡介中Reconstitution一欄的信息配制儲存液)，須分裝后-20℃或更低溫度凍存，以避免反復凍融。 注意事項: 由于有些塑料管壁對某些蛋白有較強的吸附作用，溶液中的蛋白很容易粘附在管壁上，并且粘附后的蛋白很難與管壁分離。而載體蛋白(Carrier protein，如0.1% BSA等)的主要作用是預先封閉塑料管壁上的蛋白結合位點，使細胞因子或重組蛋白不會粘附于管壁。所以一定要使用產品簡介中Reconstitution一欄的信息配制儲存液。 本產品**于專業人員的科學研究用，不得用于臨床診斷或**，不得用于食品或藥品，不得存放于普通住宅內。 為了您的**和健康，請穿實驗服并戴一次性手套操作。