- EMDB-1416: Helical structure of the needle of the type III secretion system ... -
+
データを開く
IDまたはキーワード:
読み込み中...
-
基本情報
登録情報
データベース: EMDB / ID: EMD-1416
タイトル
Helical structure of the needle of the type III secretion system of Shigella flexneri.
マップデータ
ccp4 map of reconstruction of Shigella flexneri T3SS needle
試料
試料: Shigella flexneri T3SS needle - MxiH polymer
タンパク質・ペプチド: MxiH
機能・相同性
機能・相同性情報
type III protein secretion system complex / protein secretion by the type III secretion system / cell surface / extracellular region / identical protein binding 類似検索 - 分子機能
Type III secretion, needle-protein-like / Type III secretion, needle-protein-like superfamily / Type III secretion needle MxiH, YscF, SsaG, EprI, PscF, EscF / Type III secretion system, needle protein / Type III secretion system, needle protein 類似検索 - ドメイン・相同性
Type 3 secretion system needle filament protein 類似検索 - 構成要素
ジャーナル: J Biol Chem / 年: 2003 タイトル: Helical structure of the needle of the type III secretion system of Shigella flexneri. 著者: Frank S Cordes / Kaoru Komoriya / Eric Larquet / Shixin Yang / Edward H Egelman / Ariel Blocker / Susan M Lea / 要旨: Gram-negative bacteria commonly interact with animal and plant hosts using type III secretion systems (TTSSs) for translocation of proteins into eukaryotic cells during infection. 10 of the 25 TTSS- ...Gram-negative bacteria commonly interact with animal and plant hosts using type III secretion systems (TTSSs) for translocation of proteins into eukaryotic cells during infection. 10 of the 25 TTSS-encoding genes are homologous to components of the bacterial flagellar basal body, which the TTSS needle complex morphologically resembles. This indicates a common ancestry, although no TTSS sequence homologues for the genes encoding the flagellum are found. We here present an approximately 16-A structure of the central component, the needle, of the TTSS. Although the needle subunit is significantly smaller and shares no sequence homology with the flagellar hook and filament, it shares a common helical architecture ( approximately 5.6 subunits/turn, 24-A helical pitch). This common architecture implies that there will be further mechanistic analogies in the functioning of these two bacterial systems.