Human TSLP Protein, His Tag, premium grade

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Menge
TSP-H52Hb-100ug
$415.00
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TSP-H52Hb-1mg (500ug X 2)
$2,995.00
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Synonyms

TSLP

Source

Human TSLP Protein, His Tag, premium grade (TSP-H52Hb) is expressed from human 293 cells (HEK293). It contains AA Tyr 29 - Gln 159 (Accession # Q969D9-1), verified by Mass Spectrometry.

It is produced under our rigorous quality control system that incorporates a comprehensive set of tests including sterility and endotoxin tests. Product performance is carefully validated and tested for compatibility for cell culture use or any other applications in the early preclinical stage. When ready to transition into later clinical phases, we also offer a custom GMP protein service that tailors to your needs. We will work with you to customize and develop a GMP-grade product in accordance with your requests that also meets the requirements for raw and ancillary materials use in cell manufacturing of cell-based therapies.

Molecular Characterization

This protein carries a polyhistidine tag at the C-terminus.

The protein has a calculated MW of 16.8 kDa. The protein migrates as 20-27 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under non-reducing (NR) condition (SDS-PAGE) due to glycosylation.

Mass Spectrometry
  • Measured Molecular Mass

    The molecular weight by mass spectrometry is 16821 Da (Routinely tested).

  • Sequence Coverage

    Human TSLP Protein, His Tag, premium grade(TSP-H52Hb) was digested with trypsin and characterized by LC-MS/MS peptide mapping, achieving 99.3% sequence coverage (Routinely tested).

N-terminal Sequence Analysis

Tyr-Asp-Phe-Thr-Asn-Cys-Asp-Phe-Glu-Lys
(Routinely tested)

Endotoxin

Less than 0.01 EU per μg by the LAL method / rFC method.

Sterility

Negative

Mycoplasma

Negative

Purity

>90% as determined by SDS-PAGE.

>95% as determined by SEC-MALS.

Formulation

Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.

Contact us for customized product form or formulation.

Reconstitution

Please see Certificate of Analysis for specific instructions.

For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

Shipping and Storage

This product is shipped at ambient temperature.

For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Please avoid repeated freeze-thaw cycles.

This product is stable after storage at:
  • -20°C to -70°C for 24 months in lyophilized state;
  • -70°C for 24 months under sterile conditions after reconstitution.

Background Introduction

Thymic stromal lymphopoietin (TSLP) is an epithelial cell-derived cytokine involved in the pathology of inflammatory skin diseases, and is widely expressed by epithelial cells. Human TSLP cDNA encodes a 159 amino acid (aa) residue precursor protein with a 28 aa signal sequence (4, 5). Human TSLP has been shown to developing nondeletional central tolerance, amplifying epithelium-induced class switching, inducing atopic diseases and maintaining intestinal noninflammatory environment. Among diverse cells responding to Human TSLP, CD11c+ dendritic cells are the most obviously characterized target cells.