- PDB-8rgi: Structure of DYNLT1:DYNLT2B (TCTEX1:TCTEX1D2) heterodimer. -
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基本情報
登録情報
データベース: PDB / ID: 8rgi
タイトル
Structure of DYNLT1:DYNLT2B (TCTEX1:TCTEX1D2) heterodimer.
要素
Dynein light chain Tctex-type 1
Dynein light chain Tctex-type protein 2B
キーワード
TRANSPORT PROTEIN / dynein / cilia / intraflagellar transport / complex
機能・相同性
機能・相同性情報
regulation of intraciliary retrograde transport / intracellular transport of viral protein in host cell / secretory vesicle / intraciliary retrograde transport / regulation of cilium assembly / dynein axonemal particle / Intraflagellar transport / dynein complex / regulation of G protein-coupled receptor signaling pathway / microtubule-dependent intracellular transport of viral material towards nucleus ...regulation of intraciliary retrograde transport / intracellular transport of viral protein in host cell / secretory vesicle / intraciliary retrograde transport / regulation of cilium assembly / dynein axonemal particle / Intraflagellar transport / dynein complex / regulation of G protein-coupled receptor signaling pathway / microtubule-dependent intracellular transport of viral material towards nucleus / cytoplasmic dynein complex / dynein intermediate chain binding / microtubule-based movement / cytoplasmic microtubule / establishment of mitotic spindle orientation / cilium assembly / cilium / negative regulation of neurogenesis / spindle / host cell / nervous system development / secretory granule lumen / ficolin-1-rich granule lumen / symbiont entry into host cell / cell division / Neutrophil degranulation / Golgi apparatus / extracellular region / identical protein binding / cytoplasm 類似検索 - 分子機能
Dynein light chain Tctex-1 like / Tctex-1-like superfamily / Tctex-1 family 類似検索 - ドメイン・相同性
Biotechnology and Biological Sciences Research Council (BBSRC)
BB/P008348/1
英国
Biotechnology and Biological Sciences Research Council (BBSRC)
BB/S007202/1
英国
Biotechnology and Biological Sciences Research Council (BBSRC)
BB/S013024/1
英国
Biotechnology and Biological Sciences Research Council (BBSRC)
BB/S005390/1
英国
Wellcome Trust
210585/Z/18/Z
英国
引用
ジャーナル: EMBO J / 年: 2024 タイトル: Structure and tethering mechanism of dynein-2 intermediate chains in intraflagellar transport. 著者: Aakash G Mukhopadhyay / Katerina Toropova / Lydia Daly / Jennifer N Wells / Laura Vuolo / Miroslav Mladenov / Marian Seda / Dagan Jenkins / David J Stephens / Anthony J Roberts / 要旨: Dynein-2 is a large multiprotein complex that powers retrograde intraflagellar transport (IFT) of cargoes within cilia/flagella, but the molecular mechanism underlying this function is still emerging. ...Dynein-2 is a large multiprotein complex that powers retrograde intraflagellar transport (IFT) of cargoes within cilia/flagella, but the molecular mechanism underlying this function is still emerging. Distinctively, dynein-2 contains two identical force-generating heavy chains that interact with two different intermediate chains (WDR34 and WDR60). Here, we dissect regulation of dynein-2 function by WDR34 and WDR60 using an integrative approach including cryo-electron microscopy and CRISPR/Cas9-enabled cell biology. A 3.9 Å resolution structure shows how WDR34 and WDR60 use surprisingly different interactions to engage equivalent sites of the two heavy chains. We show that cilia can assemble in the absence of either WDR34 or WDR60 individually, but not both subunits. Dynein-2-dependent distribution of cargoes depends more strongly on WDR60, because the unique N-terminal extension of WDR60 facilitates dynein-2 targeting to cilia. Strikingly, this N-terminal extension can be transplanted onto WDR34 and retain function, suggesting it acts as a flexible tether to the IFT "trains" that assemble at the ciliary base. We discuss how use of unstructured tethers represents an emerging theme in IFT train interactions.
温度: 293.15 K / 手法: 蒸気拡散法, ハンギングドロップ法 詳細: DYNLT1-DYNLT2B was crystallized using the hanging-drop vapour diffusion method by mixing 1 ul of protein solution (15 mg/ml) with 1-2 ul of precipitant (1.2-1.4 M potassium sodium tartrate, ...詳細: DYNLT1-DYNLT2B was crystallized using the hanging-drop vapour diffusion method by mixing 1 ul of protein solution (15 mg/ml) with 1-2 ul of precipitant (1.2-1.4 M potassium sodium tartrate, Tris pH 8-8.5) and incubating at 20 degrees Celsius. Crystals were cryo-protected in mother liquor supplemented with 25-30% glycerol and then flash frozen in liquid nitrogen.