Membrane Association and Remodeling by Intraflagellar Transport Protein IFT172

Overview

Journal Nat Commun

Specialty Biology

Date 2018 Nov 10

PMID 30409972

Citations 17

Authors

Qianmin Wang

Michael Taschner

Kristina A Ganzinger

Charlotte Kelley

Alethia Villasenor

Michael Heymann

Petra Schwille

Esben Lorentzen

Naoko Mizuno

Affiliations

Soon will be listed here.

Abstract

The cilium is an organelle used for motility and cellular signaling. Intraflagellar transport (IFT) is a process to move ciliary building blocks and signaling components into the cilium. How IFT controls the movement of ciliary components is currently poorly understood. IFT172 is the largest IFT subunit essential for ciliogenesis. Due to its large size, the characterization of IFT172 has been challenging. Using giant unilamellar vesicles (GUVs), we show that IFT172 is a membrane-interacting protein with the ability to remodel large membranes into small vesicles. Purified IFT172 has an architecture of two globular domains with a long rod-like protrusion, resembling the domain organization of coatomer proteins such as COPI-II or clathrin. IFT172 adopts two different conformations that can be manipulated by lipids or detergents: 1) an extended elongated conformation and 2) a globular closed architecture. Interestingly, the association of IFT172 with membranes is mutually exclusive with IFT57, implicating multiple functions for IFT172 within IFT.

Citing Articles

The intraflagellar transport cycle.

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PMID: 39537792 DOI: 10.1038/s41580-024-00797-x.

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Long X, Chen L, Xiao X, Min X, Wu Y, Yang Z Front Cell Dev Biol. 2024; 12:1418928.

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Primary cilia-associated protein IFT172 in ciliopathies.

Zheng N, Miao Y, Zhang X, Huang M, Jahangir M, Luo S Front Cell Dev Biol. 2023; 11:1074880.

PMID: 36733456 PMC: 9887189. DOI: 10.3389/fcell.2023.1074880.

The molecular structure of IFT-A and IFT-B in anterograde intraflagellar transport trains.

Lacey S, Foster H, Pigino G Nat Struct Mol Biol. 2023; 30(5):584-593.

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