6jbm | pdb_00006jbm
Crystal structure of the TRIM14 PRYSPRY domain
Structural highlights
Function[TRI14_HUMAN] Plays a role in the innate immune defense against viruses. Facilitates the type I IFN response by interacting with MAVS at the outer mitochondria membrane and thereby recruiting NF-kappa-B essential modulator IKBKG/NEMO to the MAVS signalosome, leading to the activation of both the IFN regulatory factor 3/IRF3 and NF-kappa-B pathways (PubMed:24379373). Positively regulates the CGAS-induced type I interferon signaling pathway by stabilizing CGAS and inhibiting its autophagic degradation (PubMed:27666593).[1] [2] [3] Publication Abstract from PubMedTripartite motif (TRIM)14 was recently shown to be an important molecule against pathogens. Its PRYSPRY domain acts as a protein-protein interaction module. TRIM14 exerts distinct functions via its PRYSPRY domain by interacting with different partners. However, the structural basis for its binding specificity remains unknown. Here we solved the crystal structure of the TRIM14 PRYSPRY domain, and found a positively charged surface that may mediate its partner specificity. Isothermal titration calorimetry reveals that the TRIM14 PRYSPRY domain binds to acidic peptides, and the analysis of the reported partners of TRIM14 is consistent with our assumption. Therefore, we demonstrate that the PRYSPRY domain of TRIM14 harbors a putative basic interface that may favorably bind to acidic amino acid residues. The TRIM14 PRYSPRY domain mediates protein interaction via its basic interface.,Yu Y, Liang L, Jin Y, Yin Y FEBS Lett. 2019 May;593(10):1122-1129. doi: 10.1002/1873-3468.13386. Epub 2019, Apr 24. PMID:30973643[4] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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