- EMDB-10520: Cryo-EM structure of Toxoplasma gondii mitochondrial ATP synthase... -
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基本情報
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データベース: EMDB / ID: EMD-10520
タイトル
Cryo-EM structure of Toxoplasma gondii mitochondrial ATP synthase dimer, membrane region map
マップデータ
Toxoplasma ATP synthase dimer, membrane region
試料
複合体: Mitochondrial ATP synthase dimer, membrane region
タンパク質・ペプチド: x 24種
リガンド: x 4種
キーワード
mitochondrial / ATP synthase / membrane region / lipids / MEMBRANE PROTEIN
機能・相同性
機能・相同性情報
mitochondrial electron transport, ubiquinol to cytochrome c / proton transmembrane transporter activity / proton motive force-driven ATP synthesis / : / electron transfer activity / mitochondrial inner membrane / heme binding / metal ion binding / membrane 類似検索 - 分子機能
: / : / ATPTG10-like / Apicomplexa microprotein / ATP synthase, F0 complex, subunit D superfamily, mitochondrial / Cytochrome c1, transmembrane anchor, C-terminal / Cytochrome c1 / Cytochrome C1 family / Thioredoxin / Cytochrome c family profile. ...: / : / ATPTG10-like / Apicomplexa microprotein / ATP synthase, F0 complex, subunit D superfamily, mitochondrial / Cytochrome c1, transmembrane anchor, C-terminal / Cytochrome c1 / Cytochrome C1 family / Thioredoxin / Cytochrome c family profile. / Cytochrome c-like domain / Cytochrome c-like domain superfamily / Thioredoxin domain / Thioredoxin-like superfamily 類似検索 - ドメイン・相同性
Uncharacterized protein / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 7 / Uncharacterized protein / Putative membrane protein / Transmembrane protein / ATPTG10-like domain-containing protein / Microprotein domain-containing protein / Uncharacterized protein / Transmembrane protein / Transmembrane protein ...Uncharacterized protein / NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 7 / Uncharacterized protein / Putative membrane protein / Transmembrane protein / ATPTG10-like domain-containing protein / Microprotein domain-containing protein / Uncharacterized protein / Transmembrane protein / Transmembrane protein / Uncharacterized protein / CHCH domain-containing protein / Uncharacterized protein / Transmembrane protein / Transmembrane protein / Thioredoxin domain-containing protein / Uncharacterized protein / Uncharacterized protein / Transmembrane protein / Uncharacterized protein / Transmembrane protein / Putative myosin heavy chain / Cytochrome c1, heme protein / Uncharacterized protein 類似検索 - 構成要素
ジャーナル: Nat Commun / 年: 2021 タイトル: ATP synthase hexamer assemblies shape cristae of Toxoplasma mitochondria. 著者: Alexander Mühleip / Rasmus Kock Flygaard / Jana Ovciarikova / Alice Lacombe / Paula Fernandes / Lilach Sheiner / Alexey Amunts / 要旨: Mitochondrial ATP synthase plays a key role in inducing membrane curvature to establish cristae. In Apicomplexa causing diseases such as malaria and toxoplasmosis, an unusual cristae morphology has ...Mitochondrial ATP synthase plays a key role in inducing membrane curvature to establish cristae. In Apicomplexa causing diseases such as malaria and toxoplasmosis, an unusual cristae morphology has been observed, but its structural basis is unknown. Here, we report that the apicomplexan ATP synthase assembles into cyclic hexamers, essential to shape their distinct cristae. Cryo-EM was used to determine the structure of the hexamer, which is held together by interactions between parasite-specific subunits in the lumenal region. Overall, we identified 17 apicomplexan-specific subunits, and a minimal and nuclear-encoded subunit-a. The hexamer consists of three dimers with an extensive dimer interface that includes bound cardiolipins and the inhibitor IF. Cryo-ET and subtomogram averaging revealed that hexamers arrange into ~20-megadalton pentagonal pyramids in the curved apical membrane regions. Knockout of the linker protein ATPTG11 resulted in the loss of pentagonal pyramids with concomitant aberrantly shaped cristae. Together, this demonstrates that the unique macromolecular arrangement is critical for the maintenance of cristae morphology in Apicomplexa.