Abbreviation
Recombinant Human CSF1 protein, partial (Active)
Purity
>95% as determined by SDS-PAGE.
Endotoxin
Less than 1.0 EU/μg as determined by LAL method.
Activity
Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using murine M-NFS-60 cells is less than 1 ng/ml, corresponding to a specific activity of >1.0x106 IU/mg.
Alternative Names
Colony stimulating factor 1 (macrophage); Colony stimulating factor 1; Colony stimulating factor macrophage specific; CSF 1; CSF-1; CSF1; CSF1_HUMAN; Csfm; Lanimostim; M CSF; M-CSF; Macrophage Colony Stimulating Factor 1; Macrophage colony stimulating factor; MCSF; MGC31930; Processed macrophage colony-stimulating factor 1
Species
Homo sapiens (Human)
Expression Region
33-190aa
Target Protein Sequence
EEVSEYCSHM IGSGHLQSLQ RLIDSQMETS CQITFEFVDQ EQLKDPVCYL KKAFLLVQDI MEDTMRFRDN TPNAIAIVQL QELSLRLKSC FTKDYEEHDK ACVRTFYETP LQLLEKVKNV FNETKNLLDK DWNIFSKNCN NSFAECSSQG HERQSEGS
Note: The complete
sequence may include tag sequence, target protein sequence, linker sequence and extra sequence that is
translated with the protein sequence for the purpose(s) of secretion, stability, solubility, etc.
If the exact amino acid sequence of this recombinant protein is critical to your application,
please explicitly request the full and complete sequence of this protein before ordering.
Protein Length
Partial of Isoform 3
Tag Info
Tag-Free
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Buffer
Lyophilized from a 0. 2µm filtered PBS, pH7.4
Lead Time
5-10 business days
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Datasheet & COA
Please contact us to get it.
Description
CSF1 (M-CSF) is a key regulator of monocyte and macrophage survival, proliferation, and differentiation, making precise recombinant forms essential for dissecting myeloid biology. This tag-free human CSF1 fragment (residues 33–190 of Isoform 3) delivers exceptional signaling potency, with an ED50 below 1 ng/mL in M-NFS-60 proliferation assays corresponding to a specific activity exceeding 1.0 × 10⁶ IU/mg — providing a reliable basis for macrophage differentiation protocols, monocyte activation studies, and downstream JAK/STAT or MAPK signaling pathway analyses. Endotoxin levels below 1.0 EU/μg minimize LPS-driven artifacts that commonly confound immune cell functional assays, which supports use in sensitive in vivo inflammation or tumor-associated macrophage models as well as serving as a reference standard in M-CSF detection assays. Purity exceeding 95% by SDS-PAGE, combined with this stringent endotoxin control, satisfies the quality criteria typical for antibody validation workflows including ELISA coating and Western blot positive controls.