Recombinant Human RAF proto-oncogene serine/threonine-protein kinase (RAF1)

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Code CSB-EP019284HU
Size $224
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  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
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Product Details

Greater than 90% as determined by SDS-PAGE.
Target Names
Uniprot No.
Research Area
Alternative Names
c Raf; C-raf; C-Raf proto-oncogene, serine/threonine kinase; CMD1NN; Craf 1 transforming gene; cRaf; Craf1 transforming gene; EC; kinase Raf1; Murine sarcoma 3611 oncogene 1; NS5; Oncogene MIL; Oncogene RAF1; OTTHUMP00000160218; OTTHUMP00000207813; OTTHUMP00000209389; Protein kinase raf 1; Proto-oncogene c-RAF; Raf 1; Raf 1 proto oncogene serine/threonine kinase; RAF; Raf proto oncogene serine/threonine protein kinase; RAF proto-oncogene serine/threonine-protein kinase; RAF-1; RAF1; RAF1_HUMAN; Similar to murine leukemia viral (V-raf-1) oncogene homolog 1; TRANSFORMING REPLICATION-DEFECTIVE MURINE RETROVIRUS 3611-MSV; v raf 1 murine leukemia viral oncogene homolog 1; v-raf murine sarcoma viral oncogene homolog 1; v-raf-1 murine leukemia viral oncogene-like protein 1; vraf1 murine leukemia viral oncogene homolog 1
Homo sapiens (Human)
Expression Region
Target Protein Sequence
Note: The complete sequence including tag sequence, target protein sequence and linker sequence could be provided upon request.
Mol. Weight
Protein Length
Full Length
Tag Info
N-terminal 6xHis-SUMO-tagged
Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol.
Note: If you have any special requirement for the glycerol content, please remark when you place the order.
If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
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.
Lead Time
3-7 business days
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet & COA
Please contact us to get it.

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I am interested in several of your recombinant proteins. Can you please provide some informations:
For CSB-EP019284HU (all expression systems):
b.Tag type
c.Tag position
d.Sizes and formats
e.Is the protein provided soluble in solution?
f.Is the protein purified from bacterial inclusion bodies are you supplied refolded or still in urea?
g.I want to use this protein for conjugation purposes and need it supplied in an amine free buffer (so not Tris). Can you supply this protein in one of the buffers at my request: phosphate, carbonate, or borate? Would there be an extra charge?

Thanks for your inquiry. Proteins will be supplied soluble in solution.
It is not certain for the protein to be expressed in the supernatant or precipitation, but our proteins are provided with folding correctly.
If you need it supplied in an amine free buffer (so not Tris). We can do this. Please mention this requirement in your official order. We can try to provide PBS buffer, this is not extra charged.
Recombinant Human RAF proto-oncogene serine/threonine-protein kinase(RAF1)
CSB-YP019284HU >> Yeast
CSB-EP019284HU >> E.coli
CSB-BP019284HU >> Baculovirus
CSB-MP019284HU >> Mammalian cell
Expression Region: 1-648aa;Full length.
Tag information:EP: N-terminal 6xHis-sumo-tag;YP, BP, MP: Tag type will be determined during the manufacturing process.
The expected tag for other expression systems: YP, BP, MP: N-terminal 10xHis-tagged.
You can view the full sequence on this page.

Target Background

Serine/threonine-protein kinase that acts as a regulatory link between the membrane-associated Ras GTPases and the MAPK/ERK cascade, and this critical regulatory link functions as a switch determining cell fate decisions including proliferation, differentiation, apoptosis, survival and oncogenic transformation. RAF1 activation initiates a mitogen-activated protein kinase (MAPK) cascade that comprises a sequential phosphorylation of the dual-specific MAPK kinases (MAP2K1/MEK1 and MAP2K2/MEK2) and the extracellular signal-regulated kinases (MAPK3/ERK1 and MAPK1/ERK2). The phosphorylated form of RAF1 (on residues Ser-338 and Ser-339, by PAK1) phosphorylates BAD/Bcl2-antagonist of cell death at 'Ser-75'. Phosphorylates adenylyl cyclases: ADCY2, ADCY5 and ADCY6, resulting in their activation. Phosphorylates PPP1R12A resulting in inhibition of the phosphatase activity. Phosphorylates TNNT2/cardiac muscle troponin T. Can promote NF-kB activation and inhibit signal transducers involved in motility (ROCK2), apoptosis (MAP3K5/ASK1 and STK3/MST2), proliferation and angiogenesis (RB1). Can protect cells from apoptosis also by translocating to the mitochondria where it binds BCL2 and displaces BAD/Bcl2-antagonist of cell death. Regulates Rho signaling and migration, and is required for normal wound healing. Plays a role in the oncogenic transformation of epithelial cells via repression of the TJ protein, occludin (OCLN) by inducing the up-regulation of a transcriptional repressor SNAI2/SLUG, which induces down-regulation of OCLN. Restricts caspase activation in response to selected stimuli, notably Fas stimulation, pathogen-mediated macrophage apoptosis, and erythroid differentiation.
Gene References into Functions
  1. The functional assessment supported the pathogenicity of the RAF1 and RIT1 VUSs, while the significance of two variants of unknown significance in A2ML1 remained unclear. PMID: 29402968
  2. Our report presents the second familial case of Noonan syndrome due to a germline p.S427G substitution in RAF] with no occurrence of a malignant tumor. It may suggest that carrying a germline mutation in the RAF1 oncogene is not associated with an increased risk of tumor development. Since RAF1 mutations have been observed as a somatic event in many types of cancer. PMID: 30204961
  3. Data indicate that Raf-1 proto-oncogene, serine-threonine kinase (RAF1) is a negative regulator of hepatocarcinogenesis. PMID: 28000790
  4. we report a patient with an inherited RAF1-associated Noonan syndrome, presenting with an antenatally diagnosed abnormality of skull shape, bilateral subdural haematomas, of unknown cause, delayed myelination and polymicrogyria. PMID: 27753652
  5. Raf1 may serve as a novel prognostic factor and potential target for improving the longterm outcome of nonsmall cell lung cancer (NSCLC). PMID: 29484414
  6. Results provide evidence that RAF1 binding to SPRY4 is regulated by miR-1908 in glioma tumors. PMID: 29048686
  7. High RAF1 expression is associated with malignant melanoma. PMID: 28677804
  8. two premature neonates with progressive biventricular hypertrophy found to have RAF1 variants in the CR2 domain, are reported. PMID: 28777121
  9. Data indicate connector enhancer of kinase suppressor of Ras 1 protein (CNK1) as a molecular platform that controls c-raf protein (RAF) and c-akt protein (AKT) signalling and determines cell fate decisions in a cell type- and cell stage-dependent manner. PMID: 27901111
  10. CRAF is a bona fide alternative oncogene for BRAF/NRAS/GNAQ/GNA11 wild type melanomas PMID: 27273450
  11. Authors evaluated the expression of known targets of miR-125a and found that sirtuin-7, matrix metalloproteinase-11, and c-Raf were up-regulated in tumor tissue by 2.2-, 3-, and 1.7-fold, respectively. Overall, these data support a tumor suppressor role for miR-125a. PMID: 28445974
  12. Overexpression of ciRS-7 in HCT116 and HT29 cells led to the blocking of miR-7 and resulted in a more aggressive oncogenic phenotype, and ciRS-7 overexpression permitted the inhibition of miR-7 and subsequent activation of EGFR and RAF1 oncogenes PMID: 28174233
  13. miR-497 could serve as a tumor suppressor and a potential early diagnostic marker of gastric cancer by targeting Raf-1 proto-oncogene. PMID: 28586056
  14. RAF1 may have a role in survival in hepatocellular carcinoma, and indicate whether sorafenib should be used as a postoperative adjuvant PMID: 26981887
  15. Mutational activation of Kit-, Ras/Raf/Erk- and Akt- pathways indicate the biological importance of these pathways and their components as potential targets for therapy. PMID: 27391150
  16. Results indicate that des-gamma-carboxy prothrombin (DCP) antagonizes the inhibitory effects of Sorafenib on hepatocellular carcinoma (HCC) through activation of the Raf/MEK/ERK and PI3K/Akt/mTOR signaling pathways. PMID: 27167344
  17. DiRas3 binds to KSR1 independently of its interaction with activated Ras and RAF. PMID: 27368419
  18. RhoA/ROCK and Raf-1/CK2 pathway are responsible for TNF-alpha-mediated endothelial cytotoxicity via regulation of the vimentin cytoskeleton. PMID: 28743511
  19. Although Raf-1 gene is not mutated, an abnormality of Raf-1 kinase feedback regulation enhances its antiapoptotic function, and Raf-1 can still be a pharmaceutical target to increase chemotherapy or radiotherapy sensitivity in these cancer cells. PMID: 27841865
  20. RAF1 plays a critical role in maintaining the transformed phenotype of CRC cells, including those with mutated KRAS. PMID: 27670374
  21. This finding suggests that stringent assemblage of Hsp90 keeps CRAF kinase equipped for participating in the MAPK pathway. Thus, the role of Hsp90 in CRAF maturation and activation acts as a limiting factor to maintain the function of a strong client like CRAF kinase. PMID: 27703006
  22. Oncogenic NFIA:RAF1 fusion activation of the MAPK pathway is associated with pilocytic astrocytoma. PMID: 27810072
  23. IGF2BP2 as a post-transcriptional regulatory mRNA-binding factor, interfering with Raf-1 degradation by miR-195, that contributes to Colorectal carcinogenesis. PMID: 27153315
  24. Data show that when microRNA miR-125b was over-expressed in THP-1 macrophages, the expression of Raf1 proto-oncogene serine/threonine protein kinase (RAF1) was reduced to promote the apoptosis of macrophages. PMID: 27363278
  25. Data show that Griffipavixanthone (GPX), a dimeric xanthone isolated from Garcinia esculenta, is a B-RAF and C-RAF inhibitor against esophageal cancer cells. PMID: 26646323
  26. Up-regulation of Raf-1 is associated with triple-negative breast cancer. PMID: 26513016
  27. This study provides the molecular basis for C-Raf C-terminal-derived phosphopeptide interaction with 14-3-3zeta protein and gives structural insights responsible for phosphorylation-mediated protein binding. PMID: 26295714
  28. a model that CD166 regulates MCAM through a signaling flow from activation of PI3K/AKT and c-Raf/MEK/ERK signaling to the inhibition of potential MCAM ubiquitin E3 ligases, betaTrCP and Smurf1. PMID: 26004137
  29. Suggest an interrelated kinase module involving c-Raf/PI3K/Lyn and perhaps Fgr functions in a nontraditional way during retinoic acid-induced maturation or during rescue of RA induction therapy using inhibitor co-treatment in RA-resistant leukemia cells. PMID: 25817574
  30. Abnormal activation of the Ras/MAPK pathway may play a significant role in the development of pulmonary vascular disease in the subset of patients with Noonan syndrome and a specific RAF1 mutation. PMID: 25706034
  31. Raf-1 may be an important biomarker in predicting the prognosis of chordoma patients. PMID: 25755752
  32. In the presence of Raf1, the RasQ61L mutant has a rigid switch II relative to the wild-type and increased flexibility at the interface with switch I, which propagates across Raf-Ras binding domain. PMID: 25684575
  33. Besides mediating the anticancer effect, pDAPK(S308) may serve as a predictive biomarker for Raf inhibitors combination therapy, suggesting an ideal preclinical model that is worthy of clinical translation. PMID: 26100670
  34. DJ-1 directly binds to the kinase domain of c-Raf to stimulate its self-phosphorylation, followed by phosphorylation of MEK and ERK1/2 in EGF-treated cells. PMID: 26048984
  35. truncated RAF1 and BRAF proteins, recently described as products of genomic rearrangements in gastric cancer and other malignancies, have the ability to render neoplastic cells resistant to RTK-targeted therapy PMID: 25473895
  36. our study demonstrated that miR-455-RAF1 may represent a new potential therapeutic target for colorectal carcinoma treatment. PMID: 25355599
  37. approach identified 18 kinase and kinase-related genes whose overexpression can substitute for EGFR in EGFR-dependent PC9 cells, and these genes include seven of nine Src family kinase genes, FGFR1, FGFR2, ITK, NTRK1, NTRK2, MOS, MST1R, and RAF1. PMID: 25512530
  38. Aberrant expression of A-, B-, and C-RAF, and COT is frequent in PTC; increased expression of COT is correlated with recurrence of PTC. PMID: 25674762
  39. Authors demonstrate that the N-terminus of human Raf1 kinase (hRaf11-147aa) binds with human RKIP (hRKIP) at its ligand-binding pocket, loop "127-149", and the C-terminal helix by nuclear magnetic resonance experiments. PMID: 24863296
  40. Including several anti-apoptotic Bcl-2 family members and c-Raf. PMID: 24969872
  41. These data suggest that miR-7-5p functions as a tumor suppressor gene to regulate glioblastoma microvascular endothelial cell proliferation potentially by targeting the RAF1 oncogene PMID: 25027403
  42. A novel mechanism for response was discovered whereby high expression level of CAV-1 at the plasma membrane disrupts the BRaf/CRaf heterodimer and thus inhibits the activation of MAPK pathway during dasatinib treatment. PMID: 24486585
  43. Results show that ubiquitination and levels of RAF-1 is controlled by both Shoc2 and HUWE1. PMID: 25022756
  44. Raf-1/JNK /p53/p21 pathway may be involved in apoptosis, and NFkappaB1 may play a possible role in inhibiting apoptosis. PMID: 22282237
  45. The higher expression of RAF1 mRNA and the activation of AKT/ERK proteins in vinorelbine-resistant non-small cell lung cancer cell lines may confer resistance to vinorelbine PMID: 24427333
  46. analysis of RAF1 mutations in cohorts of South Indian, North Indian and Japanese patients with childhood-onset dilated cardiomyopathy PMID: 24777450
  47. Expression of miR-195 or knockdown of Raf-1 can similarly reduce tumor cell survival. PMID: 23760062
  48. We hypothesize a potential direct or indirect role for SRC, RAF1, PTK2B genes in neurotransmission and in central nervous system signaling processes. PMID: 24108181
  49. we identified multiple C-RAF mutations that produced biochemical and pharmacologic resistance in melanoma cell lines PMID: 23737487
  50. ARAF seems to stabilize BRAF:CRAF complexes in cells treated with RAF inhibitors and thereby regulate cell signaling in a subtle manner to ensure signaling efficiency PMID: 22926515

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Involvement in disease
Noonan syndrome 5 (NS5); LEOPARD syndrome 2 (LPRD2); Cardiomyopathy, dilated 1NN (CMD1NN)
Subcellular Location
Cytoplasm. Cell membrane. Mitochondrion. Nucleus. Note=Colocalizes with RGS14 and BRAF in both the cytoplasm and membranes. Phosphorylation at Ser-259 impairs its membrane accumulation. Recruited to the cell membrane by the active Ras protein. Phosphorylation at Ser-338 and Ser-339 by PAK1 is required for its mitochondrial localization. Retinoic acid-induced Ser-621 phosphorylated form of RAF1 is predominantly localized at the nucleus.
Protein Families
Protein kinase superfamily, TKL Ser/Thr protein kinase family, RAF subfamily
Tissue Specificity
In skeletal muscle, isoform 1 is more abundant than isoform 2.
Database Links

HGNC: 9829

OMIM: 164760

KEGG: hsa:5894

STRING: 9606.ENSP00000251849

UniGene: Hs.159130

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