Phospho-MAPK14 (Y323) Antibody

Code CSB-PA000709
Size US$100
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  • Western Blot analysis of HEPG2-UV cells using Phospho-p38 (Y323) Polyclonal Antibody
  • Western Blot analysis of 823 293-UV 22RV1 cells using Phospho-p38 (Y323) Polyclonal Antibody
  • Western Blot analysis of HELA using Phospho-p38 (Y323) Polyclonal Antibody.
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Product Details

Uniprot No.
Target Names
Alternative Names
CSAID Binding Protein 1 antibody; CSAID binding protein antibody; CSAID-binding protein antibody; Csaids binding protein antibody; CSBP 1 antibody; CSBP 2 antibody; CSBP antibody; CSBP1 antibody; CSBP2 antibody; CSPB1 antibody; Cytokine suppressive anti-inflammatory drug-binding protein antibody; EXIP antibody; MAP kinase 14 antibody; MAP kinase MXI2 antibody; MAP kinase p38 alpha antibody; MAPK 14 antibody; MAPK14 antibody; MAX interacting protein 2 antibody; MAX-interacting protein 2 antibody; Mitogen Activated Protein Kinase 14 antibody; Mitogen activated protein kinase p38 alpha antibody; Mitogen-activated protein kinase 14 antibody; Mitogen-activated protein kinase p38 alpha antibody; MK14_HUMAN antibody; Mxi 2 antibody; MXI2 antibody; p38 ALPHA antibody; p38 antibody; p38 MAP kinase antibody; p38 MAPK antibody; p38 mitogen activated protein kinase antibody; p38ALPHA antibody; p38alpha Exip antibody; PRKM14 antibody; PRKM15 antibody; RK antibody; SAPK2A antibody; Stress-activated protein kinase 2a antibody
Raised in
Species Reactivity
Synthesized peptide derived from Human p38 around the phosphorylation site of Y323.
Immunogen Species
Homo sapiens (Human)
Purification Method
The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen.
It differs from different batches. Please contact us to confirm it.
Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
Tested Applications
Recommended Dilution
Application Recommended Dilution
WB 1:500-1:2000
IHC 1:100-1:300
ELISA 1:5000
Troubleshooting and FAQs
Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
Lead Time
Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.

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Target Background

Serine/threonine kinase which acts as an essential component of the MAP kinase signal transduction pathway. MAPK14 is one of the four p38 MAPKs which play an important role in the cascades of cellular responses evoked by extracellular stimuli such as proinflammatory cytokines or physical stress leading to direct activation of transcription factors. Accordingly, p38 MAPKs phosphorylate a broad range of proteins and it has been estimated that they may have approximately 200 to 300 substrates each. Some of the targets are downstream kinases which are activated through phosphorylation and further phosphorylate additional targets. RPS6KA5/MSK1 and RPS6KA4/MSK2 can directly phosphorylate and activate transcription factors such as CREB1, ATF1, the NF-kappa-B isoform RELA/NFKB3, STAT1 and STAT3, but can also phosphorylate histone H3 and the nucleosomal protein HMGN1. RPS6KA5/MSK1 and RPS6KA4/MSK2 play important roles in the rapid induction of immediate-early genes in response to stress or mitogenic stimuli, either by inducing chromatin remodeling or by recruiting the transcription machinery. On the other hand, two other kinase targets, MAPKAPK2/MK2 and MAPKAPK3/MK3, participate in the control of gene expression mostly at the post-transcriptional level, by phosphorylating ZFP36 (tristetraprolin) and ELAVL1, and by regulating EEF2K, which is important for the elongation of mRNA during translation. MKNK1/MNK1 and MKNK2/MNK2, two other kinases activated by p38 MAPKs, regulate protein synthesis by phosphorylating the initiation factor EIF4E2. MAPK14 interacts also with casein kinase II, leading to its activation through autophosphorylation and further phosphorylation of TP53/p53. In the cytoplasm, the p38 MAPK pathway is an important regulator of protein turnover. For example, CFLAR is an inhibitor of TNF-induced apoptosis whose proteasome-mediated degradation is regulated by p38 MAPK phosphorylation. In a similar way, MAPK14 phosphorylates the ubiquitin ligase SIAH2, regulating its activity towards EGLN3. MAPK14 may also inhibit the lysosomal degradation pathway of autophagy by interfering with the intracellular trafficking of the transmembrane protein ATG9. Another function of MAPK14 is to regulate the endocytosis of membrane receptors by different mechanisms that impinge on the small GTPase RAB5A. In addition, clathrin-mediated EGFR internalization induced by inflammatory cytokines and UV irradiation depends on MAPK14-mediated phosphorylation of EGFR itself as well as of RAB5A effectors. Ectodomain shedding of transmembrane proteins is regulated by p38 MAPKs as well. In response to inflammatory stimuli, p38 MAPKs phosphorylate the membrane-associated metalloprotease ADAM17. Such phosphorylation is required for ADAM17-mediated ectodomain shedding of TGF-alpha family ligands, which results in the activation of EGFR signaling and cell proliferation. Another p38 MAPK substrate is FGFR1. FGFR1 can be translocated from the extracellular space into the cytosol and nucleus of target cells, and regulates processes such as rRNA synthesis and cell growth. FGFR1 translocation requires p38 MAPK activation. In the nucleus, many transcription factors are phosphorylated and activated by p38 MAPKs in response to different stimuli. Classical examples include ATF1, ATF2, ATF6, ELK1, PTPRH, DDIT3, TP53/p53 and MEF2C and MEF2A. The p38 MAPKs are emerging as important modulators of gene expression by regulating chromatin modifiers and remodelers. The promoters of several genes involved in the inflammatory response, such as IL6, IL8 and IL12B, display a p38 MAPK-dependent enrichment of histone H3 phosphorylation on 'Ser-10' (H3S10ph) in LPS-stimulated myeloid cells. This phosphorylation enhances the accessibility of the cryptic NF-kappa-B-binding sites marking promoters for increased NF-kappa-B recruitment. Phosphorylates CDC25B and CDC25C which is required for binding to 14-3-3 proteins and leads to initiation of a G2 delay after ultraviolet radiation. Phosphorylates TIAR following DNA damage, releasing TIAR from GADD45A mRNA and preventing mRNA degradation. The p38 MAPKs may also have kinase-independent roles, which are thought to be due to the binding to targets in the absence of phosphorylation. Protein O-Glc-N-acylation catalyzed by the OGT is regulated by MAPK14, and, although OGT does not seem to be phosphorylated by MAPK14, their interaction increases upon MAPK14 activation induced by glucose deprivation. This interaction may regulate OGT activity by recruiting it to specific targets such as neurofilament H, stimulating its O-Glc-N-acylation. Required in mid-fetal development for the growth of embryo-derived blood vessels in the labyrinth layer of the placenta. Also plays an essential role in developmental and stress-induced erythropoiesis, through regulation of EPO gene expression. Isoform MXI2 activation is stimulated by mitogens and oxidative stress and only poorly phosphorylates ELK1 and ATF2. Isoform EXIP may play a role in the early onset of apoptosis. Phosphorylates S100A9 at 'Thr-113'.; (Microbial infection) Activated by phosphorylation by M.tuberculosis EsxA in T-cells leading to inhibition of IFN-gamma production; phosphorylation is apparent within 15 minute and is inhibited by kinase-specific inhibitors SB203580 and siRNA.
Gene References into Functions
  1. p38-mediated phosphorylation at threonine 367 induces EZH2 cytoplasmic localization to promote breast cancer metastasis. PMID: 30022044
  2. High expression of p38MAPK is associated with diabetic cataract. PMID: 29936249
  3. p38 capital EM, Cyrilliccapital A, Cyrilliccapital ER, Cyrilliccapital KA, Cyrillic participates in the pathogenesis of epithelial-to-mesenchymal transition through Wnt pathway. PMID: 30074215
  4. The Cox proportional hazard models revealed that IL12Rb2 and p38MAPK predicted a long OS. To the best of our knowledge, the present study is the first to reveal a close association between IL12Rb2 and p38MAPK, and their possible function in nonsmall cell lung cancer progression PMID: 29956791
  5. Data show that miR-625-3p induces oxaliplatin resistance by abrogating MAP2K6-p38-regulated apoptosis and cell cycle control networks. PMID: 27526785
  6. Immune profiling of human prostate epithelial cells in health and pathology determined by expression of p38/TRAF-6/ERK MAP kinases pathways has been reported. PMID: 29475459
  7. The cytotoxicity induced by EB1 gene knockdown was due to the activation and generation of reactive oxygen species by p38 mitogen-activated protein kinase..this signaling cascade, however not nuclear factor-kappaB-mediated signaling, induced the expression of cyclooxygenase-2, a key effector of apoptotic death. PMID: 29484424
  8. Data, including data using network analysis, suggest that angiotensinogen (AGT), mitogen-activated protein kinase-14 (MAPK14), and prothrombin (F2) in placental villous tissues are core factors in early embryonic development; these studies involved proteomics and bioinformatics analysis of altered protein expression in placental villous tissue from early recurrent miscarriage patients in comparison to control tissues. PMID: 29277264
  9. The role of p38 MAP kinase signaling in metastatic clear cell renal cell carcinoma PMID: 28659173
  10. Rhythmic luciferase activity from clock gene luciferase reporter cells lines was used to test the effect of p38 MAPK inhibition on clock properties as determined using the damped sine fit and Levenberg-Marquardt algorithm.Glioma treatment with p38 MAPK inhibitors may be more effective and less toxic if administered at the appropriate time of the day. PMID: 29316898
  11. Hsp27 and P38MAPK could be used as prognostic factors in Esophageal squamous cell carcinoma. PMID: 29099815
  12. High p38MAPK expression is associated with non-small cell lung cancer metastasis. PMID: 28656293
  13. when the cells were treated with SB203580, an inhibitor of the p38 MAPK pathway, the osteogenic effects of Epo on hPDLSCs and pPDLSCs were attenuated. In conclusion, Epo may upregulate the bone formation ability of hPDLSCs and pPDLSCs via the p38 MAPK pathways PMID: 29207066
  14. KLF4 overcomes tamoxifen resistance by suppressing MAPK signaling pathway and predicts good prognosis in breast cancer. PMID: 28988130
  15. These results suggest that PYP treatment had a preventive effect on nephrotoxicity, specifically by downregulating the MAPK and NFkappaB signaling pathways and the mRNA levels of inflammatory genes PMID: 29115386
  16. hepatic p38alpha MAPK functions as a negative regulator of liver steatosis in maintaining hepatic bile acid synthesis and fatty acid beta-oxidation by antagonizing the c-Jun N-terminal kinase (JNK). PMID: 29022907
  17. The results reveal a new connection between p38MAPK, MYC and NOTCH signaling, demonstrate two mechanisms of NOTCH3 regulation and provide evidence for NOTCH3 involvement in prostate luminal cell differentiation. PMID: 28446540
  18. Overall, these results suggest that p53 is involved in improving insulin sensitivity of hepatic cells via inhibition of mitogen-activated protein kinases (MAPKs) and NF-kappaB pathways. PMID: 29258820
  19. Data show that the combination of targeting RAD51 and p38 inhibits cell proliferation both in vitro and in vivo, which was further enhanced by targeting of PARP1. PMID: 27507046
  20. Fas-FasL is the preferred death pathway for both Th1 and Th17 and that inherently low Erk2 activity protected Th17 cells from TCR AICD. PMID: 27486885
  21. provide the first report that p38-p38IP is required for the Snail-induced E-cadherin down-regulation and cell invasion in HNSCC PMID: 27531877
  22. GATA4 is a regulator of osteoblastic differentiation via the p38 signaling pathways. PMID: 28393293
  23. CX3CL1/CX3CR1 axis plays a key role in the development of ischemia-induced oligodendrocyte injury via p38MAPK signaling pathway. PMID: 26189830
  24. Data suggest that in vitro-induction of CD8+ Tregs depended in part on transforming growth factor beta 1 (TGF-beta1) activation of p38 MAPK signaling, and that p38 MAPK could be a therapeutic target in ovarian cancer (OC) anti-tumor immunotherapy. PMID: 27322208
  25. present study provides evidence that variations in GADD45B rs2024144T, MAPK14 rs3804451A and GADD45A rs581000C may predict platinum-based chemotherapy toxicity outcomes in patients with advanced non-small cell lung cancer PMID: 26993769
  26. Gab1/SHP2/p38MAPK signaling pathway and Ang-2 have an essential role in regulating thrombin-induced monocyte adhesion and vascular leakage PMID: 27241812
  27. Studies suugest Wip1 role in tumorigenesis through regulation of p53 and p38MAPK pathways. PMID: 26883196
  28. Data show that Cx43 was inhibited predominantly via IL-1beta-activated ERK1/2 and p38 MAP kinase cascades. PMID: 28938400
  29. cyclophilin-dependent isomerisation of p38MAPK is an important novel mechanism in regulating p38MAPK phosphorylation and functions. PMID: 27233083
  30. MEK2 was essential for the phosphorylation of MKK3/MKK6 and p38 MAPK that directly impacted on cyclin D1 expression. PMID: 27181679
  31. stress-induced activation of p38 MAPK and apoptosis in endothelial cells and established the link between the acid sphingomyelinase/ceramide and p38 MAPK pathways. PMID: 28179144
  32. The results of this study suggest for the first time that cadmium induces MUC8 expression via TLR4-mediated ERK1/2 and p38 MAPK signaling pathway in human airway epithelial cells PMID: 26782637
  33. These data suggested that t-BHP induced both apoptosis and necroptosis in endothelial cells which was mediated by ROS and p38MAPK. ROS derived from NADPH oxidase and mitochondria contributed to t-BHPL and t-BHPH-induced apoptosis and necroptosis, respectively PMID: 28088644
  34. TNF-alpha stimulated IL-33 expression through ERK, p38, and NFkappaB pathways in primary nasal epithelial cells and A549 cells PMID: 27060290
  35. S. aureus evades phagophores and prevents further degradation by a MAPK14/p38alpha MAP kinase-mediated blockade of autophagy. PMID: 27629870
  36. p38-dependent mechanism that phosphorylates GATA-2 and increases GATA-2 target gene activation has been demonstrated. This mechanism establishes a growth-promoting chemokine/cytokine circuit in acute myeloid leukemia cells. PMID: 27545880
  37. our results strongly indicate that the crosstalk between p38 and Akt pathways can determine special AT-rich sequence-binding protein 2 expression and epithelial character of non-small-cell lung carcinoma cells PMID: 28937318
  38. Osmotic stress promotes TEAD4 cytoplasmic translocation via p38 MAPK in a Hippo-independent manner. Stress-induced TEAD inhibition predominates YAP-activating signals and selectively suppresses YAP-driven cancer cell growth. PMID: 28752853
  39. TGF-beta induces p38alpha (mitogen-activated protein kinase 14 [MAPK14]), which in turn phosphorylates NR4A1, resulting in nuclear export of the receptor. PMID: 28674186
  40. Data suggest that suppression of nonsense-mediated RNA decay due to persistent DNA damage (from exposure to either mutagens, gamma rays, or oxidative stress) requires the activity of p38alpha MAPK (MAPK14, mitogen-activated protein kinase 14, MAP kinase p38 alpha); mRNA of ATF3 (activating transcription factor 3) is stabilized by persistent DNA damage in a p38alpha MAPK-dependent manner. PMID: 28765281
  41. VEGF-activated p38alpha phosphorylates coronin 1B at Ser2 and activates the Arp2/3 complex by liberating it from coronin 1B. PMID: 27592029
  42. findings show that endothelial MAPKs ERK, p38, and JNK mediate diapedesis-related and diapedesis-unrelated functions of ICAM-1 in cerebral and dermal microvascular endothelial cells PMID: 28373581
  43. Tetraarsenic hexoxide (As4O6) induced G2/M arrest, apoptosis and autophagic cell death through PI3K/Akt and p38 MAPK pathways alteration in SW620 colon cancer cells. PMID: 28355296
  44. The N-Terminal phosphorylation of RB by p38 bypasses its inactivation by cyclin-dependent kinases and prevents proliferation in cancer cells. PMID: 27642049
  45. Inhibition of MAPK14 conclusively facilitates elucidation of the impact of the complex network of p38 MAPK signaling on atherogenesis. PMID: 27871059
  46. Collectively, this study provides more insights into RELT expression, RELT family member function, and the mechanism of RELT-induced death. PMID: 28688764
  47. Data, including data from studies conducted in cells from transgenic/knockout mice, suggest that p38alpha MAPK (MAPK14) activity is required for hypoxia-induced pro-angiogenic activity involving cardiomyocytes and vascular endothelial cells; p38 MAPK activation in cardiomyocyte is sufficient to promote paracrine signaling-mediated, pro-angiogenic activity/myocardial revascularization. PMID: 28637870
  48. The findings indicate that p38alpha and GADD45alpha are involved in an enhanced vitamin D signaling on TRPV6 expression. PMID: 28578001
  49. These results suggest that the p38/NPM/PP2A complex acts as a dynamic sensor, allowing endothelial cells to react rapidly to acute oxidative stress. PMID: 27142525
  50. Inhibition of the inflammatory signaling intermediate p38 MAPK reduced tissue factor (TF) mRNA by one third but increased tumor necrosis factor (TNF) and interleukin-1 beta (IL-1beta) mRNA. PMID: 28343272

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Subcellular Location
Cytoplasm. Nucleus.
Protein Families
Protein kinase superfamily, CMGC Ser/Thr protein kinase family, MAP kinase subfamily
Tissue Specificity
Brain, heart, placenta, pancreas and skeletal muscle. Expressed to a lesser extent in lung, liver and kidney.
Database Links

HGNC: 6876

OMIM: 600289

KEGG: hsa:1432

STRING: 9606.ENSP00000229794

UniGene: Hs.485233

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