Search results for MALT1

Showing 17 results out of 58

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Protein (1 results from a total of 1)

Identifier: R-HSA-202461
Species: Homo sapiens
Compartment: cytosol
Primary external reference: UniProt: MALT1: Q9UDY8

Interactor (1 results from a total of 1)

Identifier: Q9UDY8-2
Species: Homo sapiens
Primary external reference: UniProt: Q9UDY8-2

Reaction (4 results from a total of 28)

Identifier: R-HSA-5607736
Species: Homo sapiens
Compartment: plasma membrane, cytosol
After binding BCL10, MALT1 also undergoes oligomerization. Like traditional caspases, MALT1 also becomes activated through the formation of oligomers. Once the CARD9-BCL10-MALT1 (CBM) signalosome is assembled, MALT1 functions as the effector protein and mediates activation of the IKK complex (McAllister-Lucas & Lucas 2008).
Identifier: R-HSA-2730899
Species: Homo sapiens
Compartment: plasma membrane, cytosol
BCL10 and MALT1 proteins form high molecular weight oligomers and only these oligomeric forms can activate IKK in vitro (Sun et al. 2004). BCL10 proteins form homo-oligomers through CARD-CARD interactions whereas in MALT1 the tandem Ig-like domains naturally form oligomers with a tendency towards dimers and tetramers (Dong et al. 2006, Quiu & Dhe-Paganon 2011). These CBM oligomers provides the molecular platform, which can facilitate dimerization or serve as scaffolds on which proteases and kinases involved in NF-kB activation are assembled and activated.
Identifier: R-HSA-202478
Species: Homo sapiens
Compartment: cytosol, plasma membrane
Oligomerized Bcl10 facilitates the association with MALT1 to form the CBM signalosome. MALT1 possesses one death domain (DD) and 2 immunoglobulin-like domains (Ig-like) in its N-terminal region and a caspase like domain (CLD) in its C-terminal region. The region between amino acids 107 and 119 of Bcl10 bind to the two Ig-like domains of MALT1. After binding to CARMA1 and Bcl10 complex, MALT1 also undergoes oligomerization. Only the oligomerized forms of Bcl10 and MALT1 are capable of activating IKK.
Identifier: R-HSA-5607747
Species: Homo sapiens
Compartment: plasma membrane, cytosol
TRAF6 (tumor necrosis factor receptor-associated factor 6) is a RING (really interesting new gene) domain ubiquitin (Ub) ligase that mediates NF-kB activation by regulating the ubiquitination of transforming growth factor beta-activated kinase (TAK1) and IkB kinase (IKK). TRAF6 has been implicated as downstream effector of MALT1. MALT1 binds to TRAF6 through two putative C-terminal TRAF6-binding motifs (Sun et al. 2004). Gorjestani et al. demonstrate that TRAF6 and TAK1 are required for C-type lectin receptor-induced NF-kB activation and play critical roles in anti-fungal innate immune responses (Gorjestani et al. 2012).

Complex (4 results from a total of 18)

Identifier: R-HSA-202487
Species: Homo sapiens
Compartment: cytosol
Identifier: R-HSA-5660653
Species: Homo sapiens
Compartment: cytosol
Identifier: R-HSA-202468
Species: Homo sapiens
Compartment: plasma membrane
Identifier: R-HSA-2685715
Species: Homo sapiens
Compartment: cytosol

Polymer (1 results from a total of 1)

Identifier: R-HSA-2685673
Species: Homo sapiens
Compartment: cytosol

Pathway (4 results from a total of 7)

Identifier: R-HSA-2871837
Species: Homo sapiens
Compartment: cytosol, nucleoplasm, plasma membrane
The increase in intracellular Ca+2 in conjunction with DAG also activates PKC and RasGRP, which inturn contributes to cytokine production by mast cells (Kambayashi et al. 2007). Activation of the FCERI engages CARMA1, BCL10 and MALT1 complex to activate NF-kB through PKC-theta (Klemm et al. 2006, Chen et al. 2007). FCERI stimulation leads to phosphorylation, and degradation of IkB which allows the release and nuclear translocation of the NF-kB proteins. Activation of the NF-kB transcription factors then results in the synthesis of several cytokines. NF-kB activation by FCERI is critical for proinflammatory cytokine production during mast cell activation and is crucial for allergic inflammatory diseases (Klemm et al. 2006).
Identifier: R-HSA-975163
Species: Homo sapiens
Compartment: cytosol, endosome membrane
Although IRAK-1 was originally thought to be a key mediator of TRAF6 activation in the IL1R/TLR signaling (Dong W et al. 2006), recent studies showed that IRAK-2, but not IRAK-1, led to TRAF6 polyubiquitination (Keating SE et al 2007). IRAK-2 loss-of-function mutants, with mutated TRAF6-binding motifs, could no longer activate NF-kB and could no longer stimulate TRAF-6 ubiquitination (Keating SE et al 2007). Furthermore, the proxyvirus protein A52 - an inhibitor of all IL-1R/TLR pathways to NF-kB activation, was found to interact with both IRAK-2 and TRAF6, but not IRAK-1. Further work showed that A52 inhibits IRAK-2 functions, whereas association with TRAF6 results in A52-induced MAPK activation. The strong inhibition effect of A52 was also observed on the TLR3-NFkB axis and this observation led to the discovery that IRAK-2 is recruited to TLR3 to activate NF-kB (Keating SE et al 2007). Thus, A52 possibly inhibits MyD88-independent TLR3 pathways to NF-kB via targeting IRAK-2 as it does for other IL-1R/TLR pathways, although it remains unclear how IRAK-2 is involved in TLR3 signaling.

IRAK-2 was shown to have two TRAF6 binding motifs that are responsible for initiating TRAF6 signaling transduction (Ye H et al 2002).

Identifier: R-HSA-937042
Species: Homo sapiens
Compartment: cytosol, plasma membrane
Although IRAK-1 was originally thought to be a key mediator of TRAF6 activation in the IL1R/TLR signaling (Dong W et al. 2006), recent studies showed that IRAK-2, but not IRAK-1, led to TRAF6 polyubiquitination (Keating SE et al 2007). IRAK-2 loss-of-function mutants, with mutated TRAF6-binding motifs, could no longer activate NF-kB and could no longer stimulate TRAF-6 ubiquitination (Keating SE et al 2007). Furthermore, the proxyvirus protein A52 - an inhibitor of all IL-1R/TLR pathways to NF-kB activation, was found to interact with both IRAK-2 and TRAF6, but not IRAK-1. Further work showed that A52 inhibits IRAK-2 functions, whereas association with TRAF6 results in A52-induced MAPK activation. The strong inhibition effect of A52 was also observed on the TLR3-NFkB axis and this observation led to the discovery that IRAK-2 is recruited to TLR3 to activate NF-kB (Keating SE et al 2007). Thus, A52 possibly inhibits MyD88-independent TLR3 pathways to NF-kB via targeting IRAK-2 as it does for other IL-1R/TLR pathways, although it remains unclear how IRAK-2 is involved in TLR3 signaling.

IRAK-2 was shown to have two TRAF6 binding motifs that are responsible for initiating TRAF6 signaling transduction (Ye H et al 2002).

Identifier: R-HSA-5660668
Species: Homo sapiens
Compartment: plasma membrane, cytosol
Antifungal immunity through the induction of T-helper 17 cells (TH17) responses requires the production of mature, active interleukin-1beta (IL1B). CLEC7A (dectin-1) through the SYK route induces activation of NF-kB and transcription of the gene encoding pro-IL1B via the CARD9-BCL10-MALT1 complex as well as the formation and activation of a MALT1-caspase-8-ASC complex that mediated the processing of pro-IL1B. The inactive precursor pro-IL1B has to be processed into mature bioactive form of IL1B and is usually mediated by inflammatory cysteine protease caspase-1. Gringhuis et al. showed that CLEC7A mediated processing of IL1B occurs through two distinct mechanisms: CLEC7A triggering induced a primary noncanonical caspase-8 inflammasome for pro-IL1B processing that was independent of caspase-1 activity, whereas some fungi triggered a second additional mechanism that required activation of the NLRP3/caspase 1 inflammasome. Unlike the canonical caspase-1 inflammasome, CLEC7A mediated noncanonical caspase-8-dependent inflammasome is independent of pathogen internalization. CLEC7A/inflammasome pathway enables the host immune system to mount a protective TH17 response against fungi and bacterial infection (Gringhuis et al. 2012, Cheng et al. 2011).

Icon (2 results from a total of 2)

Species: Homo sapiens
Mucosa-associated lymphoid tissue lymphoma translocation protein 1
Species: Homo sapiens
A protein complex comprising CARD11, BCL10 and MALT1; plays a role in signal transduction during NF-kappaB activation
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