Recombinant Human GM-CSF Protein

Product: Tiapride (hydrochloride)

Recombinant Human GM-CSF Protein Summary

Description
A recombinant protein to GM-CSF.

Amino Acid Sequence: MAPARSPSPSTQPWEHVNAIQEARRLLNLSRDTAAEMNETVEVISEMFDLQEPTCLELYKQGLRGSLTKLKGPLTMMASHYKQHCPPTPETSCATQIITFESFKENLKDFLLVIPFDCWEPVQE

Preparation
Method
E.coli
Details of Functionality
The ED50 for this effect is < 0.18 ng/ml. Measured in a cell proliferation assay using TF1 human erythroleukemic cells.
Protein/Peptide Type
Recombinant Protein
Gene
CSF2
Purity
>95% pure by SDS-PAGE
Endotoxin Note
< 1.0 EU per 1 microgram of protein (determined by LAL method)

Applications/Dilutions

Application Notes
The purity of this protein is > 95% by SDS-PAGE. Molecular weight is 14.6 kDa (128 aa), confirmed by MALDI-TOF.

Assay
Cell line: TF1 (human erythroleukemic cell)
Maintenance Condition: 10% FBS RPMI 1640 with GM-CSF
Assay medium: 10% FBS RPMI 1640 without Gm-CSF
Cell density: 2 x 10,000 cells/well (96 well plate, final volume 100ul)
Starvation: 24hr, Assay medium
Incubation time: 24 hr (after sample treatment)
Concentration range: 0.048 ng/ml – 25 ng/ml
Detection method: MTT assay

Theoretical MW
14.6 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Packaging, Storage & Formulations

Storage
Store at -80C. Avoid freeze-thaw cycles.
Buffer
Phosphate-buffered saline (pH 7.4)
Preservative
No Preservative
Concentration
1.0 mg/ml
Purity
>95% pure by SDS-PAGE

Alternate Names for Recombinant Human GM-CSF Protein

  • colony stimulating factor 2 (granulocyte-macrophage)
  • Colony-stimulating factor
  • CSF
  • CSF2
  • GMCSF
  • GM-CSF
  • GMCSFgranulocyte-macrophage colony-stimulating factor
  • granulocyte-macrophage colony stimulating factor
  • MGC131935
  • MGC138897
  • molgramostin
  • sargramostim

Background

Human GM-CSF is a 14.6 kDa globular protein consisting of 128 amino acid containing two dislufied bonds. GM-CSF is a hematopoietic growth factor that stimulates the development of neutrophils and macrophages and promotes the proliferation and development of early erythroid megakaryocytic and eosinophilic progenitor cells. It is produced in by endothelial cells, monocytes, fibroblasts and T-lymphocytes. GM-CSF inhibits neutrophil migration and enhances the functional activity of the mature end-cells. Recombinant human GM-CSF was expressed in E.coli and purified by conventional chromatography, after refolding of the isolated inclusion bodies in a renaturation buffer.

PMID: 23693126