- EMDB-4304: Cryo-EM subtomogram average of IFT complex A in anterograde IFT t... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-4304
タイトル
Cryo-EM subtomogram average of IFT complex A in anterograde IFT trains (Chlamydomonas reinhardtii)
マップデータ
Cryo-EM subtomogram average of IFT complex A in anterograde IFT trains (Chlamydomonas reinhartdii)
試料
複合体: Intraflagellar transport complex A
機能・相同性
機能・相同性情報
negative regulation of eating behavior / protein localization to non-motile cilium / smoothened signaling pathway involved in dorsal/ventral neural tube patterning / myotome development / regulation of intraciliary retrograde transport / forebrain dorsal/ventral pattern formation / ear morphogenesis / intraciliary anterograde transport / cone photoreceptor outer segment / digestive system development ...negative regulation of eating behavior / protein localization to non-motile cilium / smoothened signaling pathway involved in dorsal/ventral neural tube patterning / myotome development / regulation of intraciliary retrograde transport / forebrain dorsal/ventral pattern formation / ear morphogenesis / intraciliary anterograde transport / cone photoreceptor outer segment / digestive system development / intraciliary transport particle A / embryonic heart tube left/right pattern formation / embryonic body morphogenesis / photoreceptor cell outer segment organization / neural tube patterning / protein localization to ciliary membrane / cerebellar Purkinje cell differentiation / intraciliary retrograde transport / embryonic camera-type eye development / establishment of protein localization to organelle / gonad development / intraciliary transport / spinal cord dorsal/ventral patterning / regulation of cilium assembly / photoreceptor connecting cilium / ciliary tip / ventricular system development / Intraflagellar transport / camera-type eye morphogenesis / embryonic brain development / protein localization to cilium / non-motile cilium assembly / regulation of smoothened signaling pathway / embryonic heart tube development / embryonic cranial skeleton morphogenesis / non-motile cilium / embryonic forelimb morphogenesis / nervous system process / determination of left/right symmetry / embryonic limb morphogenesis / limb development / motile cilium / embryonic digit morphogenesis / smoothened signaling pathway / receptor clustering / Bergmann glial cell differentiation / centriolar satellite / axoneme / cilium assembly / photoreceptor outer segment / Hedgehog 'off' state / negative regulation of smoothened signaling pathway / centriole / cellular response to leukemia inhibitory factor / ciliary basal body / neural tube closure / cell morphogenesis / cilium / microtubule cytoskeleton / positive regulation of canonical Wnt signaling pathway / heart development / protein-containing complex assembly / in utero embryonic development / cytoskeleton / intracellular signal transduction / centrosome / positive regulation of gene expression / chromatin binding / regulation of transcription by RNA polymerase II / membrane / plasma membrane / cytoplasm 類似検索 - 分子機能
Intraflagellar transport protein 43 / Intraflagellar transport protein 43 / Tetratricopeptide repeat protein 21A/21B / WD repeat protein 35 / WDR19, WD40 repeat / WD repeat-containing protein 19/dyf-2 / WDR19 second beta-propeller / Intraflagellar transport protein 122 homolog / Tetratricopeptide repeat / Tetratricopeptide repeat ...Intraflagellar transport protein 43 / Intraflagellar transport protein 43 / Tetratricopeptide repeat protein 21A/21B / WD repeat protein 35 / WDR19, WD40 repeat / WD repeat-containing protein 19/dyf-2 / WDR19 second beta-propeller / Intraflagellar transport protein 122 homolog / Tetratricopeptide repeat / Tetratricopeptide repeat / Anaphase-promoting complex subunit 4, WD40 domain / Anaphase-promoting complex subunit 4 WD40 domain / Tetratricopeptide repeat / TPR repeat region circular profile. / TPR repeat profile. / Tetratricopeptide repeats / Tetratricopeptide repeat / Tetratricopeptide-like helical domain superfamily / Trp-Asp (WD) repeats profile. / Trp-Asp (WD) repeats circular profile. / WD domain, G-beta repeat / WD40 repeats / WD40 repeat / WD40-repeat-containing domain superfamily / WD40/YVTN repeat-like-containing domain superfamily 類似検索 - ドメイン・相同性
Tetratricopeptide repeat protein 21B / WD repeat-containing protein 19 / Intraflagellar transport protein 43 homolog / Intraflagellar transport protein 140 homolog / Intraflagellar transport protein 122 homolog / WD repeat-containing protein 35 類似検索 - 構成要素
ジャーナル: Nat Cell Biol / 年: 2018 タイトル: The cryo-EM structure of intraflagellar transport trains reveals how dynein is inactivated to ensure unidirectional anterograde movement in cilia. 著者: Mareike A Jordan / Dennis R Diener / Ludek Stepanek / Gaia Pigino / 要旨: Movement of cargos along microtubules plays key roles in diverse cellular processes, from signalling to mitosis. In cilia, rapid movement of ciliary components along the microtubules to and from the ...Movement of cargos along microtubules plays key roles in diverse cellular processes, from signalling to mitosis. In cilia, rapid movement of ciliary components along the microtubules to and from the assembly site is essential for the assembly and disassembly of the structure itself. This bidirectional transport, known as intraflagellar transport (IFT), is driven by the anterograde motor kinesin-2 and the retrograde motor dynein-1b (dynein-2 in mammals). However, to drive retrograde transport, dynein-1b must first be delivered to the ciliary tip by anterograde IFT. Although, the presence of opposing motors in bidirectional transport processes often leads to periodic stalling and slowing of cargos, IFT is highly processive. Using cryo-electron tomography, we show that a tug-of-war between kinesin-2 and dynein-1b is prevented by loading dynein-1b onto anterograde IFT trains in an autoinhibited form and by positioning it away from the microtubule track to prevent binding. Once at the ciliary tip, dynein-1b must transition into an active form and engage microtubules to power retrograde trains. These findings provide a striking example of how coordinated structural changes mediate the behaviour of complex cellular machinery.