2022
The Hydrophilic Loop of Arabidopsis PIN1 Auxin Efflux Carrier Harbors Hallmarks of an Intrinsically Disordered Protein
BILANOVIČOVÁ, Veronika, Nikola RÝDZA, Lilla KOCZKA, Martin HESS, Elena FERARU et. al.Základní údaje
Originální název
The Hydrophilic Loop of Arabidopsis PIN1 Auxin Efflux Carrier Harbors Hallmarks of an Intrinsically Disordered Protein
Autoři
BILANOVIČOVÁ, Veronika (703 Slovensko, domácí), Nikola RÝDZA (703 Slovensko, domácí), Lilla KOCZKA (348 Maďarsko, domácí), Martin HESS (203 Česká republika, domácí), Elena FERARU, Jiri FRIML a Tomasz NODZYNSKI (616 Polsko, garant, domácí)
Vydání
International Journal of Molecular Sciences, Basel, Multidisciplinary Digital Publishing Institute, 2022, 1422-0067
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10608 Biochemistry and molecular biology
Stát vydavatele
Švýcarsko
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.600
Kód RIV
RIV/00216224:14740/22:00128182
Organizační jednotka
Středoevropský technologický institut
UT WoS
000808733300001
Klíčová slova anglicky
PIN1; hydrophilic hoop; dimerization; intrinsic disorder; subcellular trafficking
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 15. 10. 2024 14:10, Ing. Marie Švancarová
Anotace
V originále
Much of plant development depends on cell-to-cell redistribution of the plant hormone auxin, which is facilitated by the plasma membrane (PM) localized PIN FORMED (PIN) proteins. Auxin export activity, developmental roles, subcellular trafficking, and polarity of PINs have been well studied, but their structure remains elusive besides a rough outline that they contain two groups of 5 alpha-helices connected by a large hydrophilic loop (HL). Here, we focus on the PIN1 HL as we could produce it in sufficient quantities for biochemical investigations to provide insights into its secondary structure. Circular dichroism (CD) studies revealed its nature as an intrinsically disordered protein (IDP), manifested by the increase of structure content upon thermal melting. Consistent with IDPs serving as interaction platforms, PIN1 loops homodimerize. PIN1 HL cytoplasmic overexpression in Arabidopsis disrupts early endocytic trafficking of PIN1 and PIN2 and causes defects in the cotyledon vasculature formation. In summary, we demonstrate that PIN1 HL has an intrinsically disordered nature, which must be considered to gain further structural insights. Some secondary structures may form transiently during pairing with known and yet-to-be-discovered interactors.
Návaznosti
EF18_046/0015974, projekt VaV |
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90127, velká výzkumná infrastruktura |
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90129, velká výzkumná infrastruktura |
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