This domain is found in one or two copies per protein, and is found associated with the PAAD/DAPIN domain Pfam:PF02758. This domain recognises and interacts with the phosphate backbone of dsDNA in a sequence-independent manner [1,2,3].

1: Structural mechanism of DNA recognition by the p204 HIN domain. Fan X, Jiang J, Zhao D, Chen F, Ma H, Smith P, Unterholzner L, Xiao TS, Jin T; Nucleic Acids Res. 2021;49:2959-2972. PMID:33619523

2: Structural basis for termination of AIM2-mediated signaling by p202. Ru H, Ni X, Zhao L, Crowley C, Ding W, Hung LW, Shaw N, Cheng G, Liu ZJ; Cell Res. 2013;23:855-858. PMID:23567559

3: Structures of the HIN domain:DNA complexes reveal ligand binding and activation mechanisms of the AIM2 inflammasome and IFI16 receptor. Jin T, Perry A, Jiang J, Smith P, Curry JA, Unterholzner L, Jiang Z, Horvath G, Rathinam VA, Johnstone RW, Hornung V, Latz E, Bowie AG, Fitzgerald KA, Xiao TS; Immunity. 2012;36:561-571. PMID:22483801