- EMDB-33604: Cryo-EM Structure of apo mitochondrial ABC transporter ABCB10 fro... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-33604
タイトル
Cryo-EM Structure of apo mitochondrial ABC transporter ABCB10 from Biortus
マップデータ
sharpened map
試料
複合体: Homodimer of ABCB10, apo form
タンパク質・ペプチド: ATP-binding cassette sub-family B member 10, mitochondrial
キーワード
ABCB10 / ABC transporter / biliverdin / MEMBRANE PROTEIN
機能・相同性
機能・相同性情報
export from the mitochondrion / positive regulation of heme biosynthetic process / Mitochondrial ABC transporters / mitochondrial unfolded protein response / positive regulation of hemoglobin biosynthetic process / トランスロカーゼ; 他の化合物の輸送を触媒; ヌクレオシド三リン酸の加水分解に伴う / heme biosynthetic process / mitochondrial transport / ABC-type transporter activity / erythrocyte development ...export from the mitochondrion / positive regulation of heme biosynthetic process / Mitochondrial ABC transporters / mitochondrial unfolded protein response / positive regulation of hemoglobin biosynthetic process / トランスロカーゼ; 他の化合物の輸送を触媒; ヌクレオシド三リン酸の加水分解に伴う / heme biosynthetic process / mitochondrial transport / ABC-type transporter activity / erythrocyte development / positive regulation of erythrocyte differentiation / mitochondrial membrane / mitochondrial inner membrane / protein homodimerization activity / ATP hydrolysis activity / mitochondrion / ATP binding / metal ion binding 類似検索 - 分子機能
Type 1 protein exporter / ABC transporter transmembrane region / ABC transporter type 1, transmembrane domain / ABC transporter integral membrane type-1 fused domain profile. / ABC transporter type 1, transmembrane domain superfamily / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter / ABC transporter-like, ATP-binding domain / ATP-binding cassette, ABC transporter-type domain profile. ...Type 1 protein exporter / ABC transporter transmembrane region / ABC transporter type 1, transmembrane domain / ABC transporter integral membrane type-1 fused domain profile. / ABC transporter type 1, transmembrane domain superfamily / ABC transporter-like, conserved site / ABC transporters family signature. / ABC transporter / ABC transporter-like, ATP-binding domain / ATP-binding cassette, ABC transporter-type domain profile. / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
ATP-binding cassette sub-family B member 10, mitochondrial 類似検索 - 構成要素
ジャーナル: Nat Commun / 年: 2023 タイトル: Cryo-EM structures of mitochondrial ABC transporter ABCB10 in apo and biliverdin-bound form. 著者: Sheng Cao / Yihu Yang / Lili He / Yumo Hang / Xiaodong Yan / Hui Shi / Jiaquan Wu / Zhuqing Ouyang / 要旨: ABCB10, a member of ABC transporter superfamily that locates in the inner membrane of mitochondria, plays crucial roles in hemoglobin synthesis, antioxidative stress and stabilization of the iron ...ABCB10, a member of ABC transporter superfamily that locates in the inner membrane of mitochondria, plays crucial roles in hemoglobin synthesis, antioxidative stress and stabilization of the iron transporter mitoferrin-1. Recently, it was found that ABCB10 is a mitochondrial biliverdin exporter. However, the molecular mechanism of biliverdin export by ABCB10 remains elusive. Here we report the cryo-EM structures of ABCB10 in apo (ABCB10-apo) and biliverdin-bound form (ABCB10-BV) at 3.67 Å and 2.85 Å resolution, respectively. ABCB10-apo adopts a wide-open conformation and may thus represent the apo form structure. ABCB10-BV forms a closed conformation and biliverdin situates in a hydrophobic pocket in one protomer and bridges the interaction through hydrogen bonds with the opposing one. We also identify cholesterols sandwiched by BVs and discuss the export dynamics based on these structural and biochemical observations.