Analysis of microtubule plus-end-tracking proteins in cilia

Jesper Larsen, Ilya Grigoriev, Anna Akhmanova, Lotte Bang Pedersen

3 Citationer (Scopus)

Abstract

The microtubule (MT) plus-end-tracking proteins (+ TIPs) belonging to the end binding (EB) protein family have been studied extensively in the context of cytoplasmic MTs and were shown to play pivotal roles in regulating MT dynamics and in recruiting other + TIPs to MT ends. Early studies in the green alga Chlamydomonas reinhardtii showed that EB1 localizes to the distal flagellum tip and the basal body, and subsequent studies using green fluorescent protein-tagged fusion proteins have demonstrated similar localization of EBs in other ciliated organisms, including mammalian cells as demonstrated here. Functional analysis of EBs in cultured mammalian cells revealed that EB1 and EB3 are required for biogenesis of primary cilia. Although mammalian EB3 localizes to the tip of some cilia and induces cilium elongation, EBs primarily seem to promote ciliogenesis via MT minus-end anchoring at the basal body, in turn facilitating vesicular trafficking to the cilium base. Moreover, mammalian EBs were shown to interact with several proteins implicated in MT minus-end anchoring and/or vesicular trafficking to cilia. Recent work suggests that apart from EBs, additional + TIPs may be present at the distal tip of cilia where they could regulate axoneme assembly, stability, or disassembly.

OriginalsprogEngelsk
TitelCilia, Part A
RedaktørerWallace F. Marshall
Antal sider18
ForlagElsevier
Publikationsdato2013
Sider105-122
Kapitel7
ISBN (Trykt)978-0-12-397945-2
DOI
StatusUdgivet - 2013
NavnMethods in Enzymology
Vol/bind524
ISSN0076-6879

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