Recombinant Human Mitogen-activated protein kinase 3 (MAPK3), partial

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Code CSB-EP013456HU
Size $224
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  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.
  • Based on the SEQUEST from database of E.coli host and target protein, the LC-MS/MS Analysis result of CSB-EP013456HU could indicate that this peptide derived from E.coli-expressed Homo sapiens (Human) MAPK3.
  • Based on the SEQUEST from database of E.coli host and target protein, the LC-MS/MS Analysis result of CSB-EP013456HU could indicate that this peptide derived from E.coli-expressed Homo sapiens (Human) MAPK3.
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Product Details

Greater than 90% as determined by SDS-PAGE.
Target Names
Uniprot No.
Research Area
Cell Cycle
Alternative Names
ERK 1; ERK-1; ERK1; ERT 2; ERT2; Extracellular Signal Regulated Kinase 1; Extracellular signal related kinase 1; Extracellular signal-regulated kinase 1; HGNC6877; HS44KDAP; HUMKER1A; Insulin Stimulated MAP2 Kinase; Insulin-stimulated MAP2 kinase; MAP kinase 1; MAP kinase 3; MAP Kinase; MAP kinase isoform p44; MAPK 1; MAPK 3; MAPK; MAPK1; Mapk3; MGC20180; Microtubule Associated Protein 2 Kinase; Microtubule-associated protein 2 kinase; Mitogen Activated Protein Kinase 3; Mitogen-activated protein kinase 1; Mitogen-activated protein kinase 3; MK03_HUMAN; OTTHUMP00000174538; OTTHUMP00000174541; p44 ERK1; p44 MAPK; p44-ERK1; p44-MAPK; P44ERK1; P44MAPK; PRKM 3; PRKM3 ; Protein Kinase Mitogen Activated 3
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
Tag Info
N-terminal 6xHis-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.

The synthesis of the recombinant plasmid containing the gene encoding the Human MAPK3 protein (11-379aa) is the first step to produce the recombinant Human MAPK3 protein. After that, the recombinant plasmid is transformed into e.coli cells. e.coli cells capable of enduring a specific antibiotic are selected, demonstrating successful uptake of the recombinant plasmid. The e.coli cells containing the recombinant plasmid are cultured under conditions that encourage the expression of the gene of interest. A N-terminal 6xHis tag is linked to the protein. Following expression, affinity purification is employed to isolate and purify the recombinant Human MAPK3 protein from the cell lysate. Denaturing SDS-PAGE is applied to resolve the resulting recombinant Human MAPK3 protein, indicating a purity level exceeding 90%.

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Target Background

Serine/threonine kinase which acts as an essential component of the MAP kinase signal transduction pathway. MAPK1/ERK2 and MAPK3/ERK1 are the 2 MAPKs which play an important role in the MAPK/ERK cascade. They participate also in a signaling cascade initiated by activated KIT and KITLG/SCF. Depending on the cellular context, the MAPK/ERK cascade mediates diverse biological functions such as cell growth, adhesion, survival and differentiation through the regulation of transcription, translation, cytoskeletal rearrangements. The MAPK/ERK cascade plays also a role in initiation and regulation of meiosis, mitosis, and postmitotic functions in differentiated cells by phosphorylating a number of transcription factors. About 160 substrates have already been discovered for ERKs. Many of these substrates are localized in the nucleus, and seem to participate in the regulation of transcription upon stimulation. However, other substrates are found in the cytosol as well as in other cellular organelles, and those are responsible for processes such as translation, mitosis and apoptosis. Moreover, the MAPK/ERK cascade is also involved in the regulation of the endosomal dynamics, including lysosome processing and endosome cycling through the perinuclear recycling compartment (PNRC); as well as in the fragmentation of the Golgi apparatus during mitosis. The substrates include transcription factors (such as ATF2, BCL6, ELK1, ERF, FOS, HSF4 or SPZ1), cytoskeletal elements (such as CANX, CTTN, GJA1, MAP2, MAPT, PXN, SORBS3 or STMN1), regulators of apoptosis (such as BAD, BTG2, CASP9, DAPK1, IER3, MCL1 or PPARG), regulators of translation (such as EIF4EBP1) and a variety of other signaling-related molecules (like ARHGEF2, FRS2 or GRB10). Protein kinases (such as RAF1, RPS6KA1/RSK1, RPS6KA3/RSK2, RPS6KA2/RSK3, RPS6KA6/RSK4, SYK, MKNK1/MNK1, MKNK2/MNK2, RPS6KA5/MSK1, RPS6KA4/MSK2, MAPKAPK3 or MAPKAPK5) and phosphatases (such as DUSP1, DUSP4, DUSP6 or DUSP16) are other substrates which enable the propagation the MAPK/ERK signal to additional cytosolic and nuclear targets, thereby extending the specificity of the cascade.
Gene References into Functions
  1. Data suggest that Thr264 in TRPV3 is key ERK1 phosphorylation site mediating EGFR-induced sensitization of TRPV3 to stimulate signaling pathways involved in regulating skin homeostasis. (TRPV3 = transient receptor potential cation channel subfamily V member-3; ERK1 = extracellular signal-regulated kinase-1; EGFR = epidermal growth factor receptor) PMID: 29084846
  2. RASSF7 promotes cell proliferation through activating MEK1/MEK2-ERK1/ERK2 signaling pathway in hepatocellular carcinoma. PMID: 29729697
  3. ERK1 Directly Interacts With JNK1 Leading to Regulation of JNK1/c-Jun Activity and Cell Transformation. PMID: 28106280
  4. the D domain of LRRC4 anchors ERK1/2 in the cytoplasm and competitively inhibits MEK/ERK activation in glioma cells. PMID: 27884160
  5. High ERK1 expression is associated with castration-resistant prostate cancer. PMID: 28844715
  6. The antitumor activity of scopoletin may be due to its strong anti-angiogenic effect, which may be mediated by its effective inhibition of ERK1, VEGF-A, and FGF-2. PMID: 27133199
  7. High ERK1 expression is associated with melanoma. PMID: 28193911
  8. findings uncover a role of ERK1 in the regulation of furin activity by supporting a self-sustaining loop for high TGF-beta activity in glioma-initiating cells. PMID: 28484053
  9. ERK1 phosphorylation is mediated by Src and Csk. PMID: 26234813
  10. Integrin beta1 appears to serve as a partner of Stathmin induction of ERK and Akt signaling by inhibiting apoptosis in the cholangiocarcinoma cell. PMID: 28178656
  11. High ERK1 expression is associated with gastric cancer. PMID: 27601158
  12. Data indicate three biomarkers mitogen-activated protein kinase 3 (MAPK3), BCL2 apoptosis regulator (BCL2) and proto-oncogene c-Akt (AKT1) as potential predictors of neurological outcome following cardiac arrest (CA). PMID: 28147324
  13. Inhibiting miR-21 attenuates hepatic fibrosis by suppressing both the ERK1 in hepatic stellate cells and epithelial-mesenchymal transition of hepatocyte. PMID: 27226339
  14. High ERK1 expression is associated with paclitaxel resistance in cervical cancer. PMID: 26810068
  15. High ERK1 expression is Associated with Nucleus Pulposus Cells' Degeneration. PMID: 27635110
  16. Low expression of ERK is associated with resistance to sorafenib in liver cancer. PMID: 26711788
  17. Increased ERK1 expression is associated with drug resistance in neoplasms. PMID: 26715278
  18. The activation of ERK1 by MEK1, subsequent slower phosphorylation of the flanking sites results in inhibition of the kinase. Because the T207 and Y210 phosphosites of ERK1 are highly conserved within the eukaryotic protein kinase family, hyperphosphorylation within the kinase activation T-loop may serve as a general mechanism for protein kinase down-regulation after initial activation by their upstream kinases. PMID: 26823016
  19. Over-expressed TWIST associates with markers of epithelial mesenchymal transition and predicts poor prognosis in breast cancers via ERK and AKT activation. PMID: 26295469
  20. p44/42, a known apoptosis-promoting regulator and caspase 3 activator, was increased in brain tumor cells treated with violacein PMID: 25816226
  21. miR-155 plays an important role in regulating the pathological network involving EMT process and ERK1 pathway during hepatic stellate cell activation. PMID: 25142507
  22. This study identified and confirmed MAPK3 protein changes within the postsynaptic density in schizophrenia PMID: 25048004
  23. Sphingosine-1-phosphate promotes extravillous trophoblast cell invasion by activating MEK/ERK/MMP-2 signaling pathways via S1P/S1PR1 axis activation. PMID: 25188412
  24. Results show that miR-483-5p expression level is up-regulated in polycystic ovary syndrome patients and inversely correlated with notch3 and MAPk3 levels and that Notch3 and MAPK3 are the direct targets of MIR483. PMID: 25622783
  25. SKLB-M8 inhibited HUVEC proliferation, migration, invasion, and tube formation in vitro with the inhibition of phosphorylated ERK1/2. PMID: 25341684
  26. Therefore, the positivity of p-ERK1/2 expression may serve as a vital biomarker in the development of non-small cell lung cancer PMID: 25596700
  27. Low ERK1 expression is associated with hormone resistance in breast cancer. PMID: 25085753
  28. Therefore, our study demonstrates that MAPK members (ERK1/2 and JNK) play a key role in CCR7 regulating SCCHN metastasis PMID: 25270024
  29. High phosphorylated ERK1 is associated with low response to chemotherapy in nonsmall-cell lung carcinoma. PMID: 25449334
  30. These results therefore indicate that p53-mediated up-regulation of MKP-3 contributes to the establishment of the senescent cellular phenotype through dephosphorylating ERK1/2 PMID: 25414256
  31. ERK1/2 signal induced MNK catalytic activity enabled enterovirus type 1 internal ribosomal entry site-mediated translation/host cell cytotoxicity through negative regulation of the Ser/Arg (SR)-rich protein kinase (SRPK). PMID: 25187541
  32. ERK, AKT, and GSK-3beta have roles in boldine-induced cell cycle arrest and apoptosis in T24 human bladder cancer cell line PMID: 24239461
  33. Insulin-induced apoptotic commitment depended on the down-regulation of Erk-1, insulin growth factor-1 receptor (IGF-1R), and fibroblast growth factor receptor-1 (FGFR-1)-mediated signaling. PMID: 24818995
  34. Enhanced t-ERK1 expression in infiltrating lymphoid cells was significantly associated with female gender, absence of vascular and perineural invasion, lymph node metastases and early depth of invasion as well as with longer disease-free survival times PMID: 24682903
  35. Expression of TMPRSS4 in gastric cancer is significantly associated with lymph node and distant metastasis, high Erk1 expression, and poor prognosis. PMID: 23922976
  36. ERK1 phosphorylates KIBRA at Ser(548) for cell proliferation and migratory activity PMID: 24269383
  37. We conclude that pERK1/2 is a sensitive marker of early colon cancer, which disappears at later stages of cancer development. PMID: 23357054
  38. In activated eosinophils ligation of Siglec-8 leads to ROS-dependent enhancement of IL-5-induced ERK phosphorylation, which results in a novel mode of biochemically regulated eosinophil cell death. PMID: 23684072
  39. ERK1 localized to the cytosol and translocated to the nucleus upon cell activation and kinase phosphorylation. PMID: 23651922
  40. Data indicate that tocilizumab enhanced the interferon-induced phosphorylation of STAT1 and inhibited SOCS3 expression and the phosphorylation of both STAT3 and ERK. PMID: 23274199
  41. Extracellular signal-regulated kinase and glycogen synthase kinase 3beta regulate gephyrin postsynaptic aggregation and GABAergic synaptic function in a calpain-dependent mechanism PMID: 23408424
  42. ERK1/2 signaling plays an important role in topoisomerase II poison-induced G2/M checkpoint activation. PMID: 23166842
  43. MRK is a novel RhoC effector that controls LPA-stimulated cell invasion at least in part by regulating myosin dynamics, ERK and p38 PMID: 23319595
  44. osteosarcoma patients whose tumors expressed pERK1 had a poorer clinical outcome than those whose tumors did not. PMID: 22935974
  45. Results showed significantly higher levels of ERK1 protein in smokers vs. non-smokers. Analysis revealed a significant relation among the number of cigarettes smoked daily, the Fagerstrom Test for Nicotine Dependence score and the mRNA expression of ERK1. PMID: 21070506
  46. constitutive activation of the ERK1 pathway in HER2/ERBB2-transformed cells prevents EGF deprivation-induced FLIPL upregulation and TRAIL resistance. PMID: 22722337
  47. Lead specifically induces dysregulation of iron response element (IRP)1 protein by activating the ERK1/2 signaling pathway, indicating a novel role for IRP1 and the ERK/MAPK pathway in vascular endothelial functions. PMID: 22502979
  48. CXCL12/CXCR4 protein signaling axis induces sonic hedgehog expression in pancreatic cancer cells via extracellular regulated kinase- and Akt kinase-mediated activation of nuclear factor kappaB PMID: 22995914
  49. Aortic endothelial cells stimulated with HLA class I antibodies did not promote any detectable change in intracellular Ca(2+) concentration but instead induced MLC phosphorylation and stress fiber assembly. PMID: 22914643
  50. The inhibition of Id-1 expression by MK615 is mediated via ERK1/2 activation. PMID: 22076920

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Subcellular Location
Cytoplasm. Nucleus. Membrane, caveola. Cell junction, focal adhesion.
Protein Families
Protein kinase superfamily, CMGC Ser/Thr protein kinase family, MAP kinase subfamily
Database Links

HGNC: 6877

OMIM: 601795

KEGG: hsa:5595

STRING: 9606.ENSP00000263025

UniGene: Hs.861

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