Granulocyte colony-stimulating factor (G-CSF) is a member of the hematopoietic growth factor family which plays a crucial role in the proliferation, differentiation, and maturation of committed progenitor cells to granulocytes, such as neutrophils.

Qkine G-CSF is a highly pure, bioactive glycoprotein produced in an animal origin-free expression system composed of 174 amino acids with a molecular weight of 18.6 kDa. Human and murine G-CSF are 73% identical at the amino acid level and show species cross-reactivity. Human G-CSF is carrier-free, tag-free, and non-glycosylated to ensure a pure and homogenous production of high-quality neutrophils and other relevant cell cultures with exceptional lot-to-lot consistency.

• High purity human G-CSF protein (Uniprot: P09919-2)
• >98%, by SDS-PAGE quantitative densitometry
• Expressed in E. coli
• 18.6 kDa monomer
• Animal origin-free (AOF) and carrier protein-free
• Manufactured in Cambridge, UK
• Lyophilised from Tris/mannitol
• Resuspend in water at >100µg/mL, prepare single-use aliquots, add carrier protein if desired, and store frozen at -20°C or -80°C