Recombinant Human Leukemia Inhibitory Factor (rHuLIF)

英文全名

Recombinant Human Leukemia Inhibitory Factor (rHuLIF)

英文别名

Differentiation-stimulating Factor, D Factor, Melanoma-derived LPL Inhibitor, MLPLI

蛋白结构

Squence of Recombinant Human Leukemia Inhibitory Factor

氨基酸序列

SPLPITPVNA TCAIRHPCHN NLMNQIRSQL AQLNGSANAL FILYYTAQGE PFPNNLDKLC GPNVTDFPPF HANGTEKAKL VELYRIVVYL GTSLGNITRD QKILNPSALS LHSKLNATAD ILRGLLSNVL CRLCSKYHVG HVDVTYGPDT SGKDVFQKKK LGCQLLGKYK QIIAVLAQAF

Accession

P15018

Gene ID

3976

产品英文概述

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 (180 a.a.) shares 78 %, 82 %, 91 %, 88 % and 87 % a.a. sequence identity with mouse, rat, canine, bovine, and porcine LIF, respectively.

来源

Escherichia coli.

分子量

Approximately 19.7 kDa, a single non-glycosylated polypeptide chain containing 180 amino acids.

生物活性

Fully biologically active when compared to standard. The ED50 as determined by the dose-dependent proliferation of human TF-1 cells is less than 0.1 ng/ml, corresponding to a specific activity of > 1.0 × 107 IU/mg.

外观

Sterile filtered white lyophilized (freeze-dried) powder.

配方

Lyophilized from a 0.2 um filtered concentrated solution in PBS, pH 7.4.

内毒素

Less than 1 EU/ug of rHuLIF as determined by LAL method.

溶解说明

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 0.1-0.2 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20 °C. Further dilutions should be made in appropriate buffered solutions.

储存条件

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.- 12 months from date of receipt, -20 to -70 °C as supplied.- 1 month, 2 to 8 °C under sterile conditions after reconstitution.- 3 months, -20 to -70 °C under sterile conditions after reconstitution.

参考资料

纯度

> 98 % by SDS-PAGE and HPLC analyses.
SDS-PAGE of Recombinant Human Leukemia Inhibitory Factor

包装规格

5ug/100ug/500ug

安全数据表下载 (SDS)

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技术参数表下载 (TDS)

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品牌链接

Recombinant Human Leukemia Inhibitory Factor是ChemWhat品牌授权产品并通过沃尔森销售,下面是ChemWhat上的该产品链接Recombinant Human Leukemia Inhibitory Factor (rHuLIF)