Structural and functional diversity calls for a new classification of ABC transporters.

Structural and functional diversity calls for a new classification of ABC transporters.
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DOI:
10.1002/1873-3468.13935
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发表时间:
2020-12
期刊:
影响因子:
3.5
通讯作者:
Tampé R
Tampé R
中科院分区:
生物学3区
文献类型:
--
作者:
Thomas C;Aller SG;Beis K;Carpenter EP;Chang G;Chen L;Dassa E;Dean M;Duong Van Hoa F;Ekiert D;Ford R;Gaudet R;Gong X;Holland IB;Huang Y;Kahne DK;Kato H;Koronakis V;Koth CM;Lee Y;Lewinson O;Lill R;Martinoia E;Murakami S;Pinkett HW;Poolman B;Rosenbaum D;Sarkadi B;Schmitt L;Schneider E;Shi Y;Shyng SL;Slotboom DJ;Tajkhorshid E;Tieleman DP;Ueda K;Váradi A;Wen PC;Yan N;Zhang P;Zheng H;Zimmer J;Tampé R

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三磷酸腺苷结合盒(ABC)转运子超家族的成员可以转运多种化学成分的底物。虽然它们在核苷酸结合域(NBD)中的同名ATP结合盒是高度保守的,但它们构成易位途径的跨膜结构域(TMD)显示出不同的折叠和拓扑结构,这表明在进化过程中,古老的运动域与不同的跨膜机械系统结合在一起,协调了各种细胞过程。近年来,越来越明显的是,不同的TMD褶皱最适合于对ABC转运蛋白的众多进行分类。因此,我们提出了一种新的基于TMD结构同源性的ABC转运蛋白分类。
Members of the ATP-binding cassette (ABC) transporter superfamily translocate a broad spectrum of chemically diverse substrates. While their eponymous ATP-binding cassette in the nucleotide-binding domains (NBDs) is highly conserved, their transmembrane domains (TMDs) forming the translocation pathway exhibit distinct folds and topologies, suggesting that during evolution the ancient motor domains were combined with different transmembrane mechanical systems to orchestrate a variety of cellular processes. In recent years, it has become increasingly evident that the distinct TMD folds are best suited to categorize the multitude of ABC transporters. We therefore propose a new ABC transporter classification that is based on structural homology in the TMDs.
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