---
_id: '1264'
abstract:
- lang: eng
text: n contrast with the wealth of recent reports about the function of μ-adaptins
and clathrin adaptor protein (AP) complexes, there is very little information
about the motifs that determine the sorting of membrane proteins within clathrin-coated
vesicles in plants. Here, we investigated putative sorting signals in the large
cytosolic loop of the Arabidopsis (Arabidopsis thaliana) PIN-FORMED1 (PIN1) auxin
transporter, which are involved in binding μ-adaptins and thus in PIN1 trafficking
and localization. We found that Phe-165 and Tyr-280, Tyr-328, and Tyr-394 are
involved in the binding of different μ-adaptins in vitro. However, only Phe-165,
which binds μA(μ2)- and μD(μ3)-adaptin, was found to be essential for PIN1 trafficking
and localization in vivo. The PIN1:GFP-F165A mutant showed reduced endocytosis
but also localized to intracellular structures containing several layers of membranes
and endoplasmic reticulum (ER) markers, suggesting that they correspond to ER
or ER-derived membranes. While PIN1:GFP localized normally in a μA (μ2)-adaptin
mutant, it accumulated in big intracellular structures containing LysoTracker
in a μD (μ3)-adaptin mutant, consistent with previous results obtained with mutants
of other subunits of the AP-3 complex. Our data suggest that Phe-165, through
the binding of μA (μ2)- and μD (μ3)-adaptin, is important for PIN1 endocytosis
and for PIN1 trafficking along the secretory pathway, respectively.
acknowledgement: "We thank Dr. R. Offringa (Leiden University) for providing the GST-\r\nPIN-CL
construct; Sandra Richter and Gerd Jurgens (University of Tübin-\r\ngen) for providing
the estradiol-inducible PIN1-RFP construct and the\r\ngnl1 mutant expressing BFA-sensitive
GNL1; F.J. Santonja (University of Valencia)\r\nfor help with the statistical analysis;
Jurgen Kleine-Vehn, Elke Barbez, and\r\nEva Benkova for helpful discussions; the
Salk Institute Genomic Analysis\r\nLaboratory for providing the sequence-indexed
Arabidopsis T-DNA in-\r\nsertion mutants; and the greenhouse section and the microscopy
section\r\nof SCSIE (University of Valencia) and Pilar Selvi for excellent technical\r\nassistance."
author:
- first_name: Gloria
full_name: Sancho Andrés, Gloria
last_name: Sancho Andrés
- first_name: Esther
full_name: Soriano Ortega, Esther
last_name: Soriano Ortega
- first_name: Caiji
full_name: Gao, Caiji
last_name: Gao
- first_name: Joan
full_name: Bernabé Orts, Joan
last_name: Bernabé Orts
- first_name: Madhumitha
full_name: Narasimhan, Madhumitha
id: 44BF24D0-F248-11E8-B48F-1D18A9856A87
last_name: Narasimhan
orcid: 0000-0002-8600-0671
- first_name: Anna
full_name: Müller, Anna
id: 420AB15A-F248-11E8-B48F-1D18A9856A87
last_name: Müller
- first_name: Ricardo
full_name: Tejos, Ricardo
last_name: Tejos
- first_name: Liwen
full_name: Jiang, Liwen
last_name: Jiang
- first_name: Jirí
full_name: Friml, Jirí
id: 4159519E-F248-11E8-B48F-1D18A9856A87
last_name: Friml
orcid: 0000-0002-8302-7596
- first_name: Fernando
full_name: Aniento, Fernando
last_name: Aniento
- first_name: Maria
full_name: Marcote, Maria
last_name: Marcote
citation:
ama: Sancho Andrés G, Soriano Ortega E, Gao C, et al. Sorting motifs involved in
the trafficking and localization of the PIN1 auxin efflux carrier. Plant Physiology.
2016;171(3):1965-1982. doi:10.1104/pp.16.00373
apa: Sancho Andrés, G., Soriano Ortega, E., Gao, C., Bernabé Orts, J., Narasimhan,
M., Müller, A., … Marcote, M. (2016). Sorting motifs involved in the trafficking
and localization of the PIN1 auxin efflux carrier. Plant Physiology. American
Society of Plant Biologists. https://doi.org/10.1104/pp.16.00373
chicago: Sancho Andrés, Gloria, Esther Soriano Ortega, Caiji Gao, Joan Bernabé Orts,
Madhumitha Narasimhan, Anna Müller, Ricardo Tejos, et al. “Sorting Motifs Involved
in the Trafficking and Localization of the PIN1 Auxin Efflux Carrier.” Plant
Physiology. American Society of Plant Biologists, 2016. https://doi.org/10.1104/pp.16.00373.
ieee: G. Sancho Andrés et al., “Sorting motifs involved in the trafficking
and localization of the PIN1 auxin efflux carrier,” Plant Physiology, vol.
171, no. 3. American Society of Plant Biologists, pp. 1965–1982, 2016.
ista: Sancho Andrés G, Soriano Ortega E, Gao C, Bernabé Orts J, Narasimhan M, Müller
A, Tejos R, Jiang L, Friml J, Aniento F, Marcote M. 2016. Sorting motifs involved
in the trafficking and localization of the PIN1 auxin efflux carrier. Plant Physiology.
171(3), 1965–1982.
mla: Sancho Andrés, Gloria, et al. “Sorting Motifs Involved in the Trafficking and
Localization of the PIN1 Auxin Efflux Carrier.” Plant Physiology, vol.
171, no. 3, American Society of Plant Biologists, 2016, pp. 1965–82, doi:10.1104/pp.16.00373.
short: G. Sancho Andrés, E. Soriano Ortega, C. Gao, J. Bernabé Orts, M. Narasimhan,
A. Müller, R. Tejos, L. Jiang, J. Friml, F. Aniento, M. Marcote, Plant Physiology
171 (2016) 1965–1982.
date_created: 2018-12-11T11:51:01Z
date_published: 2016-07-01T00:00:00Z
date_updated: 2021-01-12T06:49:29Z
day: '01'
department:
- _id: JiFr
- _id: EvBe
doi: 10.1104/pp.16.00373
ec_funded: 1
intvolume: ' 171'
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4936568/
month: '07'
oa: 1
oa_version: Submitted Version
page: 1965 - 1982
project:
- _id: 25716A02-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '282300'
name: Polarity and subcellular dynamics in plants
publication: Plant Physiology
publication_status: published
publisher: American Society of Plant Biologists
publist_id: '6059'
quality_controlled: '1'
scopus_import: 1
status: public
title: Sorting motifs involved in the trafficking and localization of the PIN1 auxin
efflux carrier
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 171
year: '2016'
...