Detailed Information on Publication Record
2017
BEN3/BIG2 ARF GEF is Involved in Brefeldin A-Sensitive Trafficking at the trans-Golgi Network/Early Endosome in Arabidopsis thaliana
KITAKURA, S., M. ADAMOWSKI, Y. MATSUURA, L. SANTUARI, H. KOUNO et. al.Basic information
Original name
BEN3/BIG2 ARF GEF is Involved in Brefeldin A-Sensitive Trafficking at the trans-Golgi Network/Early Endosome in Arabidopsis thaliana
Authors
KITAKURA, S. (392 Japan), M. ADAMOWSKI (40 Austria), Y. MATSUURA (392 Japan), L. SANTUARI (528 Netherlands), H. KOUNO (392 Japan), K. ARIMA (392 Japan), C.S. HARDTKE (528 Netherlands), Jiří FRIML (203 Czech Republic, guarantor, belonging to the institution), T. KAKIMOTO (392 Japan) and H. TANAKA (392 Japan)
Edition
Plant and Cell Physiology, OXFORD, OXFORD UNIV PRESS, 2017, 0032-0781
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10601 Cell biology
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 4.059
RIV identification code
RIV/00216224:14740/17:00095594
Organization unit
Central European Institute of Technology
UT WoS
000413220400019
Keywords in English
Arabidopsis; ARF GEF; Auxin; Brefeldin A; PIN-FORMED1; trans-Golgi network
Tags
Tags
International impact, Reviewed
Změněno: 22/3/2018 14:00, Mgr. Pavla Foltynová, Ph.D.
Abstract
V originále
Membrane traffic at the trans-Golgi network (TGN) is crucial for correctly distributing various membrane proteins to their destination. Polarly localized auxin efflux proteins, including PIN-FORMED1 (PIN1), are dynamically transported between the endosomes and the plasma membrane (PM) in the plant cells. The intracellular trafficking of PIN1 protein is sensitive to the fungal toxin brefeldin A (BFA), which is known to inhibit guanine nucleotide exchange factors for ADP ribosylation factors (ARF GEFs) such as GNOM. However, the molecular details of the BFA-sensitive trafficking pathway have not been fully revealed. In a previous study, we identified an Arabidopsis mutant BFA-visualized endocytic trafficking defective 3 (ben3) which exhibited reduced sensitivity to BFA in terms of BFA-induced intracellular PIN1 agglomeration. Here, we show that BEN3 encodes a member of BIG family ARF GEFs, BIG2. BEN3/BIG2 tagged with fluorescent proteins co-localized with markers for the TGN/early endosome (EE). Inspection of conditionally induced de novo synthesized PIN1 confirmed that its secretion to the PM is BFA sensitive, and established BEN3/BIG2 as a crucial component of this BFA action at the level of the TGN/EE. Furthermore, ben3 mutation alleviated BFA-induced agglomeration of another TGN-localized ARF GEF, BEN1/MIN7. Taken together, our results suggest that BEN3/BIG2 is an ARF GEF component, which confers BFA sensitivity to the TGN/EE in Arabidopsis.
Links
ED1.1.00/02.0068, research and development project |
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GA13-40637S, research and development project |
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