J 2013

Retromer Subunits VPS35A and VPS29 Mediate Prevacuolar Compartment (PVC) Function in Arabidopsis

NODZYNSKI, Tomasz; Mugurel I FERARU; Sibylle HIRSCH; Riet DE RYCKE; Claudiu NICULAES et. al.

Základní údaje

Originální název

Retromer Subunits VPS35A and VPS29 Mediate Prevacuolar Compartment (PVC) Function in Arabidopsis

Autoři

NODZYNSKI, Tomasz; Mugurel I FERARU; Sibylle HIRSCH; Riet DE RYCKE; Claudiu NICULAES; Wout BOERJAN; Jelle VAN LEENE; Geert DE JAEGER; Steffen VANNESTE a Jiří FRIML

Vydání

Molecular Plant, Oxford, Oxford University Press, 2013, 1674-2052

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

Genetika a molekulární biologie

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 6.605

Kód RIV

RIV/00216224:14740/13:00072087

Organizační jednotka

Středoevropský technologický institut

UT WoS

000327541200010

Klíčová slova anglicky

retromer; VPS35; VPS29; prevacuolar compartment (PVC); vacuolar trafficking; Arabidopsis thaliana

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 13. 2. 2014 20:51, Olga Křížová

Anotace

V originále

Arabidopsis mutants defective in subunits of the retromer complex VPS35A and VPS29 show comparable defects in subcellular trafficking and ectopic intracellular accumulation of membrane proteins. These retromer components mediate together the function of the prevacuolar compartment (PVC) and trafficking to the lytic vacuole.Intracellular protein routing is mediated by vesicular transport which is tightly regulated in eukaryotes. The protein and lipid homeostasis depends on coordinated delivery of de novo synthesized or recycled cargoes to the plasma membrane by exocytosis and their subsequent removal by rerouting them for recycling or degradation. Here, we report the characterization of protein affected trafficking 3 (pat3) mutant that we identified by an epifluorescence-based forward genetic screen for mutants defective in subcellular distribution of Arabidopsis auxin transporter PIN1GFP. While pat3 displays largely normal plant morphology and development in nutrient-rich conditions, it shows strong ectopic intracellular accumulations of different plasma membrane cargoes in structures that resemble prevacuolar compartments (PVC) with an aberrant morphology. Genetic mapping revealed that pat3 is defective in vacuolar protein sorting 35A (VPS35A), a putative subunit of the retromer complex that mediates retrograde trafficking between the PVC and trans-Golgi network. Similarly, a mutant defective in another retromer subunit, vps29, shows comparable subcellular defects in PVC morphology and protein accumulation. Thus, our data provide evidence that the retromer components VPS35A and VPS29 are essential for normal PVC morphology and normal trafficking of plasma membrane proteins in plants. In addition, we show that, out of the three VPS35 retromer subunits present in Arabidopsis thaliana genome, the VPS35 homolog A plays a prevailing role in trafficking to the lytic vacuole, presenting another level of complexity in the retromer-dependent vacuolar sorting.

Návaznosti

ED1.1.00/02.0068, projekt VaV
Název: CEITEC - central european institute of technology
EE2.3.30.0009, projekt VaV
Název: Zaměstnáním čerstvých absolventů doktorského studia k vědecké excelenci

Přiložené soubory

Nodzynski_et_al_2013_Mol_Plant.pdf
Požádat o autorskou verzi souboru