D9I2G4
uniprot
D9I2G4
canonical
activity_regulation
ACTIVITY REGULATION: Activated by pathogens and other damage-associated signals: activation promotes ubiquitination and degradation of the N-terminal part, releasing the cleaved C-terminal part of the protein (NACHT, LRR and PYD domains-containing protein 1a, C-terminus), which polymerizes and forms the Nlrp1a inflammasome (By similarity). Nlrp1a inflammasome is inhibited by DPP8 and DPP9, which sequester the C-terminal fragment of Nlrp1a (NACHT, LRR and PYD domains-containing protein 1a, C-terminus) in a ternary complex, thereby preventing Nlrp1a oligomerization and activation (By similarity). Nlrp1a inflammasome is strongly activated by Val-boroPro (Talabostat, PT-100), an inhibitor of dipeptidyl peptidases DPP8 and DPP9 (PubMed:31383852). Val-boroPro relieves inhibition of DPP8 and/or DPP9 by promoting disruption of the ternary complex, releasing its C-terminal part from autoinhibition (By similarity). Not activated by cleavage by B.anthracis lethal toxin (LT) endopeptidase (PubMed:20502689). Highly activated by Toxoplasma gondii (PubMed:31383852). {ECO:0000250|UniProtKB:D9I2F9, ECO:0000250|UniProtKB:Q2LKW6, ECO:0000269|PubMed:20502689, ECO:0000269|PubMed:31383852}.
uniprot
proteins
amino_acid_sequence
MGESQSKQESNTRVAQHGSQQDVDPTFQTKRALERERSSPQVEQSFLGQLQSLLGWSSTSKDVPLSQLIREMDHESRRHSHQSKKKLDRSEHISEGTIPEIYEKRKETISHTQSMEQKYLFQNFTKLLLLQKCCPGGSEKLVRESWHPCVPEEGGHMIEIQDLFDPNLDTEKKPQLVIIEGAAGIGKSTLARQVKRAWEEGQLYRDRFQHVFFFSCRELAQCKQLSLAELIAQGQEVLTAPTRQILSRPEKLLFILDGIDEPAWVLEDQNPELCVHWSQAQPVHTLLGSLLGKSILPEASLMLTARTTALQKLIPSLGQPHRVEVLGFSEFERKDYFYKYFAKERNTIIDFNLIGSIPVLLTLCEVPWVCWLLCTCLEKQMQQGEVLSLTSQTTTALCLKYLSLTIPGQHLSTQLRTLCSLAAEGICQRRTLFSKSDLCKQGLAEDAIATFLKIGVLQRQPSSLSYSFAHLCLQEFFAAMSYILEDSEEARGDMGNDRTVETLVERYGRQNLFEAPTVRFLLGLLNTREMREMENIFACKFPWKTKLKLLRSIVGEPFCQPCHLGLFHCLYENQEEELLTETMLCFPLTASGPNHMEATVFQTNVKRLVIQTDMELMVVTFCITFSHVRSLRLKGKGQQEYKLTAPAMVLYRWTPISEASWKVLFSNLKCTRNLEELDLSGNPLSYSAVRSLCTALRQPGCRLKTLWLVDCGLTSRCCSFLASMLSAHSRLAELDLRLNDLGDNGVRQLCEGLRNPACNLSILRLDQASLSEQVITELRALETKNPKLFISSTWMSHMTMPTENTDGEESLTSSKQQQQQSGDKHMEPLGTDDDFWGPSGPVSTEVVDRERNLYRVRLPMAGSYHCPSTGLHFVVTRAVTIEIGFCAWSQFLHETPLQHSHMVAGPLFDIKAEHGAVTAVCLPHFVSLQEGKVDSSLFHVAHFQDHGMVLETPARVEPHFAVLENPSFSPMGVLLRMIPAVGHFIPITSITLIYYRLYLEDITFHLYLVPNDCTIRKAIDEEELKFQFVRINKPPPVDALYVGSRYIVSSSKEVEILPKELELCYRSPRESQLFSEIYVGNIGSGINLQLTDKKYMNLIWEALLKPGDLRPALPRMASAPKDAPALLHFVDQHREQLVARVTSVDPLLDKLHGLVLSEEDYETVRAEATNQDKMRKLFRGSRSWSWDCKDHFYQALKETHPHLIMDLLEKSGGVSVRL
uniprot
proteins
ec_number
3.4.-.-
uniprot
proteins
function
FUNCTION: Acts as the sensor component of the Nlrp1a inflammasome, which mediates inflammasome activation in response to various pathogen-associated signals, leading to subsequent pyroptosis (By similarity). Inflammasomes are supramolecular complexes that assemble in the cytosol in response to pathogens and other damage-associated signals and play critical roles in innate immunity and inflammation (By similarity). Acts as a recognition receptor (PRR): recognizes specific pathogens and other damage-associated signals, such as Val-boroPro inhibitor, and mediates the formation of the inflammasome polymeric complex (PubMed:31383852). In response to pathogen-associated signals, the N-terminal part of Nlrp1a is degraded by the proteasome, releasing the cleaved C-terminal part of the protein (NACHT, LRR and PYD domains-containing protein 1a, C-terminus), which polymerizes to initiate the formation of the inflammasome complex: the inflammasome directly recruits pro-caspase-1 (proCASP1) independently of PYCARD/ASC and promotes caspase-1 (CASP1) activation, which subsequently cleaves and activates inflammatory cytokines IL1B and IL18 and gasdermin-D (GSDMD), leading to pyroptosis (By similarity). In the absence of GSDMD expression, the Nlrp1a inflammasome is able to recruit and activate CASP8, leading to activation of gasdermin-E (GSDME) (By similarity). {ECO:0000250|UniProtKB:Q2LKU9, ECO:0000250|UniProtKB:Q2LKW6, ECO:0000250|UniProtKB:Q9C000, ECO:0000269|PubMed:31383852}.; FUNCTION: [NACHT, LRR and PYD domains-containing protein 1a allele 5]: Constitutes the precursor of the Nlrp1a inflammasome, which mediates autoproteolytic processing within the FIIND domain to generate the N-terminal and C-terminal parts, which are associated non-covalently in absence of pathogens and other damage-associated signals. {ECO:0000250|UniProtKB:Q9C000}.; FUNCTION: [NACHT, LRR and PYD domains-containing protein 1a, N-terminus]: Regulatory part that prevents formation of the Nlrp1a inflammasome: in absence of pathogens and other damage-associated signals, interacts with the C-terminal part of Nlrp1a (NACHT, LRR and PYD domains-containing protein 1a, C-terminus), preventing activation of the Nlrp1a inflammasome. In response to pathogen-associated signals, this part is ubiquitinated by the N-end rule pathway and degraded by the proteasome, releasing the cleaved C-terminal part of the protein, which polymerizes and forms the Nlrp1a inflammasome. {ECO:0000250|UniProtKB:Q9C000}.; FUNCTION: [NACHT, LRR and PYD domains-containing protein 1a, C-terminus]: Constitutes the active part of the Nlrp1a inflammasome. In absence of pathogens and other damage-associated signals, interacts with the N-terminal part of Nlrp1a (NACHT, LRR and PYD domains-containing protein 1a, N-terminus), preventing activation of the Nlrp1a inflammasome. In response to pathogen-associated signals, the N-terminal part of Nlrp1a is degraded by the proteasome, releasing this form, which polymerizes to form the Nlrp1a inflammasome complex: the Nlrp1a inflammasome complex then directly recruits pro-caspase-1 (proCASP1) and promotes caspase-1 (CASP1) activation, leading to gasdermin-D (GSDMD) cleavage and subsequent pyroptosis. {ECO:0000250|UniProtKB:Q9C000}.
uniprot
proteins
mass_dalton
138311
uniprot
proteins
post_translational_modification
PTM: [NACHT, LRR and PYD domains-containing protein 1a allele 5]: Autocatalytically cleaved. Autocatalytic cleavage in FIIND region occurs constitutively, prior to activation signals, and is required for inflammasome activity (IL1B release), possibly by facilitating CASP1 binding. Both N- and C-terminal parts remain associated non-covalently. {ECO:0000250|UniProtKB:Q9C000}.; PTM: [NACHT, LRR and PYD domains-containing protein 1a, N-terminus]: Ubiquitinated in response to pathogen-associated signals, leading to its degradation by the proteasome and subsequent release of the cleaved C-terminal part of the protein (NACHT, LRR and PYD domains-containing protein 1a, C-terminus), which polymerizes and forms the Nlrp1a inflammasome. {ECO:0000250|UniProtKB:Q9C000}.
uniprot
proteins
protein_family
NLRP family
uniprot
proteins
pubmed
20502689
uniprot
proteins
pubmed
31383852
uniprot
proteins
pubmed
32558991
uniprot
proteins
sequence_length
1218
uniprot
proteins
subcellular_location
SUBCELLULAR LOCATION: Cytoplasm, cytosol {ECO:0000250|UniProtKB:Q9C000}. Cytoplasm {ECO:0000250|UniProtKB:Q9C000}. Nucleus {ECO:0000250|UniProtKB:Q9C000}.; SUBCELLULAR LOCATION: [NACHT, LRR and PYD domains-containing protein 1a, C-terminus]: Inflammasome {ECO:0000250|UniProtKB:Q9C000}.
uniprot
proteins