Nucleotide-binding oligomerization domain-containing protein 2 - Q9HC29 (NOD2_HUMAN)


Protein Feature View of PDB entries mapped to a UniProtKB sequence  

Involved in gastrointestinal immunity. Upon stimulation by muramyl dipeptide (MDP), a fragment of bacterial peptidoglycan, binds the proximal adapter receptor-interacting RIPK2, which recruits ubiquitin ligases as XIAP, BIRC2, BIRC3, INAVA and the LUBAC complex, triggering activation of MAP kinases and activation of NF-kappa-B signaling. This in turn leads to the transcriptional activation of hundreds of genes involved in immune response. Required for MDP-induced NLRP1-dependent CASP1 activation and IL1B release in macrophages (PubMed:18511561). Component of an autophagy-mediated antibacterial pathway together with ATG16L1 (PubMed:20637199). Plays also a role in sensing single-stranded RNA (ssRNA) from viruses. Interacts with mitochondrial antiviral signaling/MAVS, leading to activation of interferon regulatory factor-3/IRF3 and expression of type I interferon (PubMed:19701189). UniProt
Pathway Maps
      ESCHER  BiGG
Subunit Structure
Component of a signaling complex consisting of ARHGEF2, NOD2 and RIPK2 (PubMed:21887730). Interacts (via CARD domain) with RIPK2 (via CARD domain) (PubMed:19592251, PubMed:21887730, PubMed:27812135). Interacts with ATG16L1 (PubMed:20637199, PubMed:23376921). Interacts (via NACHT domain) with CARD9 (PubMed:24960071). Interacts with ANKRD17 (via N-terminus) (PubMed:23711367). Interacts with HSPA1A; the interaction enhances NOD2 stability (PubMed:24790089). Interacts (via both CARD domains) with HSP90; the interaction enhances NOD2 stability (PubMed:23019338). Interacts (via CARD domain) with SOCS3; the interaction promotes NOD2 degradation (PubMed:23019338). Interacts (via CARD domain) with ERBBI2P; the interaction inhibits activation of NOD2 (PubMed:16203728). Interacts (via CARD domain) with CASP1; this interaction leads to IL1B processing. Also interacts with CASP4. Interacts with NLRP1; this interaction is enhanced in the presence of muramyl dipeptide (MDP) and leads to increased IL1B release (PubMed:18511561). Interacts with MAPKBP1; the interaction is enhanced in the presence of muramyl dipeptide (MDP) (PubMed:22700971). Interacts with INAVA; the interaction takes place upon PRR stimulation (PubMed:28436939). Interacts with ANKHD1, C10ORF67, CHMP5, DOCK7, ENTR1, KRT15, LDOC1, PPP1R12C, PPP2R3B, TRIM41 and VIM (PubMed:27812135). Interacts with NLRP12; this interaction promotes degradation of NOD2 through the ubiquitin-proteasome pathway (PubMed:30559449). UniProt
Intramolecular interactions between the N-terminal moiety and the leucine-rich repeats (LRR) may be important for autoinhibition in the absence of activating signal. In the absence of LRRs, the protein becomes a constitutive activator of CASP1 cleavage and proIL1B processing. UniProt
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