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The NACHT domain is a protein domain made up of 300–400 amino acids. It is distinguished by seven conserved motifs, including the ATP/GTPase-specific P-loop and the Walker A and B motifs. These motifs are crucial for binding and hydrolyzing nucleotides.
The main role of the NACHT domain is to facilitate ATP-dependent self-oligomerization, which is essential for activating proteins. This domain serves as a framework for building signal transduction complexes, which are critical for initiating downstream signaling pathways. Importantly, these pathways involve the activation of NFKB and the creation of inflammasomes.
The NACHT domain interacts with leucine-rich repeats (LRRs), which detect microbial ligands. This interaction triggers conformational changes that activate the protein, playing a crucial part in t…