6bxr

Crystal structure of Toxoplasma gondii Mitochondrial Association Factor 1 B (MAF1B)

spinqualitylabelsall models 6bxr, resolution 1.60Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6bxr is a 1 chain structure with sequence from Toxoplasma gondii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.6Å Ligands: BR, GOL, NA Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function MAFB1_TOXGO During host cell infection by tachyzoites, required for tethering the parasitophorous vacuole to the host mitochondria (PubMed:26920761, PubMed:24781109, PubMed:28567444, PubMed:33723040, PubMed:35025629, PubMed:29505111). This process, known as host mitochondrial association (HMA), induces the formation of SPOTs (structures positive for outer mitochondrial membrane (OMM)), a cellular response to OMM stress, which leads to the constitutive shedding of OMM vesicles containing proteins such as mitofusins MFN1 and MFN2, which normally restrict parasite growth (PubMed:35025629). Specifically, binds to the host OMM import receptor TOMM70 to interact with SAMM50, a component of host mitochondrial intermembrane space bridging (MIB) complex (PubMed:28567444, PubMed:33723040, PubMed:35025629). By targeting SAMM50, induces the disassembly of the MIB complex, thereby promoting the formation of SPOTs (PubMed:35025629). Inhibits host TOMM70 import activity (PubMed:35025629). Plays a role in the modulation of the host innate immune response to parasite infection (PubMed:24781109, PubMed:30333181).

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