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Lead Time
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Usage
For Research Use Only. Not for use in diagnostic or therapeutic procedures.
Pseudokinase that plays a key role in TNF-induced necroptosis, a programmed cell death process. Does not have protein kinase activity. Activated following phosphorylation by RIPK3, leading to homotrimerization, localization to the plasma membrane and execution of programmed necrosis characterized by calcium influx and plasma membrane damage. In addition to TNF-induced necroptosis, necroptosis can also take place in the nucleus in response to orthomyxoviruses infection: following activation by ZBP1, MLKL is phosphorylated by RIPK3 in the nucleus, triggering disruption of the nuclear envelope and leakage of cellular DNA into the cytosol.following ZBP1 activation, which senses double-stranded Z-RNA structures, nuclear RIPK3 catalyzes phosphorylation and activation of MLKL, promoting disruption of the nuclear envelope and leakage of cellular DNA into the cytosol. Binds to highly phosphorylated inositol phosphates such as inositolhexakisphosphate (InsP6) which is essential for its necroptotic function.
Gene References into Functions
Following activation, toggling within the MLKL pseudokinase domain promotes 4HB domain disengagement from the pseudokinase domain alphaC helix and pseudocatalytic loop, to enable formation of a necroptosis-inducing tetramer.PMID:29930286
Data show that phosphatidylinositol transfer protein alpha (PITPalpha) is involved in the function of mixed lineage kinase domain-like protein (MLKL) in necroptosis.PMID:29104146
MLKL expression alters APP metabolism and loss-of-function mutation might contribute to late-onset ApoE varepsilon4-negative AD in the Hong Kong Chinese population.PMID:29656768
Results demonstrate that MLKL concentrations measured after three days of ICU treatment in critically ill patients predict prognosis during intensive care unit treatment. These data not only suggest a previously unrecognized function of MLKL as a biomarker in critical illness and sepsis but also highlight the clinical relevance of MLKL in the pathophysiology of inflammatory and infectious diseases.PMID:29606984
Thus, activation of MLKL determines cell lysis with release of proinflammatory mediators. We found that pMLKL, the activated form of MLKL, is significantly increased in intestinal epithelial cells expressing RIP3 as well as in bioptic inflamed ileal and colonic tissues from CD and UC patients.PMID:28844856
Biological events and molecular signaling following MLKL activation during necroptosis have been reported.PMID:28854080
Low expression of mixed lineage kinase domain-like protein was associated with decreased overall survival in all patient-group with resected colon cancer.PMID:27432118
Phosphorylated MLKL leads to a conformational change, exposure of the N-terminal domain, results in MLKL membrane localization, oligomerization and membrane permeabilization.PMID:26868910
adhesion-induced eosinophil cytolysis takes place through RIPK3-MLKL-dependent necroptosis, which can be counterregulated by autophagyPMID:28412393
MLKL forms cation channels that are permeable preferentially to Mg(2+) rather than Ca(2+) in the presence of Na(+) and K(+).PMID:27033670
RIPK3 is a key factor in protection against OLs death and abnormal myelin development via its interaction with MLKL.PMID:28230861
these findings demonstrate that Trx1 is a critical regulator of necroptosis that suppresses cell death by maintaining MLKL in a reduced inactive state.PMID:28878015
this study shows that release of phosphorylated MLKL within extracellular vesicles serves as a mechanism for self-restricting the necroptotic activity of this proteinPMID:28666573
this study shows that MLKL is an endogenous activator of the NLRP3 inflammasome, and that MLKL activation provides a mechanism for concurrent processing and release of IL-1beta independently of gasdermin-DPMID:28130493
Data suggest that necroptotic cells externalize phosphatidylserine (PS) after translocation of phosphorylated MLKL to cell membrane; necroptotic cells with exposed PS release extracellular vesicles containing MLKL; inhibition of MLKL after PS exposure can reverse process of necroptosis and restore cell viability.PMID:28650960
results reveal a pathway for MLKL-dependent programmed necrosis that is executed in the absence of RIPK3 and potentially drives the pathogenesis of severe liver diseases.PMID:27756058
MLKL octamer formation depends on alpha-helices 4 and 5.PMID:27920255
Necroptosis signaling is modulated by the kinase RIPK1 and requires the kinase RIPK3 and the pseudokinase MLKL. (Review)PMID:26865533
In AML, MLKL expression is reduced in specific subsets. This is linked to its function in activating the ASC inflammasome.PMID:27411587
Downregulated expression of MLKL is associated with gastric caner.PMID:27473085
Results from interaction proteomics identified MLKL as a novel HSP90 client protein in HT-29 cells.PMID:26933192
coexpression of Hsp90 increases MLKL oligomerization and plasma membrane translocation and enhances MLKL-mediated necroptosis. Findings demonstrate that an efficient necrotic response requires a functional Hsp90.PMID:26866270
MLKL was a prognostic biomarker for cervical squamous cell carcinomaPMID:26823841
Modelling predicts that a C-terminal helix constrains the activity of MLKL1, but not MLKL2PMID:26704887
Results show that upon activation, MLKL undergoes oligomerization mediated by the brace domain, being recruited to the plasma membrane through avidity of N-terminal helix bundle for phosphatidylinositol phosphate (PIP).PMID:26853145
MLKL structure determined by nuclear magnetic resonance spectroscopy reveals how different structural elements of the MLKL N-terminal region contribute to MLKL function and membrane permeation.PMID:25220470
MLKL upregulation in SPARC overexpressed cells treated with Ara-C, indicates necrosis as a possible cell death process for the SKM-1 cells under these stringent conditionsPMID:26165695
in the absence of caspase-8 activity, 24(S)-Hydroxycholesterol induces a necroptosis-like cell death which is RIPK1-dependent but MLKL-independent.PMID:25697054
These data reveal a potential role for RIPK3 as a suppressor of MLKL activation and indicate that phosphorylation can fine-tune the ability of MLKL to induce necroptosis.PMID:26283547
a novel non-enzymatic function of AChE-R is to stimulate RIPK1/MLKL-dependent regulated necrosis (necroptosis). The latter complements a cholinergic system in the ovary, which determines life and death of ovarian cells.PMID:25766324
High expression of RIP3 in keratinocytes from toxic epidermal necrolysis patients potentiates MLKL phosphorylation/activation and necrotic cell death.PMID:25748555
Authors demonstrate that the full four-helical bundle domain (4HBD) in the N-terminal region of MLKL is required and sufficient to induce its oligomerization and trigger cell death.PMID:24813885
MLKL binding to phosphatidylinositol phosphates is required for plasma membrane rupturePMID:24813885
Report role of MLKL/RIP3 pathway in necrotic membrane disruption.PMID:24703947
MLKL protein expression is significantly upregulated in children, diagnosed with inflammatory bowel disease.PMID:24322838
Data suggest that nucleotide- (ATP-) binding residues of human MLKL have divergently evolved from mouse Mlkl and conventional protein kinases; studies include small-angle X-ray scattering, thermal shift of nucleotide binding, and sequence alignment.PMID:24219132
This study reveals a crucial mechanism of MLKL-mediated TNF-induced necroptosis.PMID:24316671
Low expression of MLKL is associated with decreased OS in patients with resected PAC and decreased RFS and OS in the subset of patients with resected PAC who receive adjuvant chemotherapy.PMID:23720157
the importance of the RIP3-MLKL interaction in the formation of functional necrosomes and suggest that translocation of necrosomes to mitochondria-associated membranes is essential for necroptosis signaling.PMID:23612963
study suggests that MLKL is a key RIP3 downstream component of TNF-induced necrotic cell deathPMID:22421439
Findings implicate MLKL as a key mediator of necrosis signaling downstream of the kinase RIP3.PMID:22265413