2016
Enquiry into the Topology of Plasma Membrane-Localized PIN Auxin Transport Components
NODZYNSKI, Tomasz, Steffen VANNESTE, Marta ZWIEWKA, Markéta PERNISOVÁ, Jan HEJÁTKO et. al.Základní údaje
Originální název
Enquiry into the Topology of Plasma Membrane-Localized PIN Auxin Transport Components
Autoři
NODZYNSKI, Tomasz (616 Polsko, garant, domácí), Steffen VANNESTE (56 Belgie), Marta ZWIEWKA (616 Polsko, domácí), Markéta PERNISOVÁ (203 Česká republika, domácí), Jan HEJÁTKO (203 Česká republika, domácí) a Jiří FRIML (203 Česká republika)
Vydání
Molecular Plant, CAMBRIDGE, Cell Press, 2016, 1674-2052
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 8.827
Kód RIV
RIV/00216224:14740/16:00088530
Organizační jednotka
Středoevropský technologický institut
UT WoS
000389594100008
Klíčová slova anglicky
plasma membrane protein; topology; auxin efflux carriers; Arabidopsis thaliana
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 15. 3. 2018 22:42, Mgr. Markéta Pernisová, Ph.D.
Anotace
V originále
Auxin directs plant ontogenesis via differential accumulation within tissues depending largely on the activity of PIN proteins that mediate auxin efflux from cells and its directional cell-to-cell transport. Regardless of the developmental importance of PINs, the structure of these transporters is poorly characterized. Here, we present experimental data concerning protein topology of plasma membrane-localized PINs. Utilizing approaches based on pH-dependent quenching of fluorescent reporters combined with immunolocalization techniques,we mapped the membrane topology of PINs and further cross-validated our results using available topology modeling software. We delineated the topology of PIN1 with two transmembrane (TM) bundles of five a-helices linked by a large intracellular loop and a C-terminus positioned outside the cytoplasm. Using constraints derived from our experimental data, we also provide an updated position of helical regions generating a verisimilitude model of PIN1. Since the canonical long PINs show a high degree of conservation in TM domains and auxin transport capacity has been demonstrated for Arabidopsis representatives of this group, this empirically enhanced topological model of PIN1 will be an important starting point for further studies on PIN structure-function relationships. In addition, we have established protocols that can be used to probe the topology of other plasma membrane proteins in plants.
Návaznosti
GA13-39982S, projekt VaV |
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GA13-40637S, projekt VaV |
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LQ1601, projekt VaV |
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