Metallothionein-like peptides involved in sequestration of Zn in the Zn-accumulating ectomycorrhizal fungus Russula atropurpurea

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F14%3A43897710" target="_blank" >RIV/60461373:22330/14:43897710 - isvavai.cz</a>

Výsledek na webu

<a href="http://pubs.rsc.org/en/Content/ArticleLanding/2014/MT/C4MT00141A#!divAbstract" target="_blank" >http://pubs.rsc.org/en/Content/ArticleLanding/2014/MT/C4MT00141A#!divAbstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c4mt00141a" target="_blank" >10.1039/c4mt00141a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Metallothionein-like peptides involved in sequestration of Zn in the Zn-accumulating ectomycorrhizal fungus Russula atropurpurea

Popis výsledku v původním jazyce

Homeostatic mechanisms preventing the toxicity of free Zn ions in cells involve, among others, cytosolic Zn-binding ligands, particularly the cysteine-rich metallothioneins (MTs). Here we examined the Zn-binding peptides of Russula atropurpurea, an ectomycorrhizal fungus known for its ability to accumulate high amounts of Zn in its sporocarps. The Zn complexes and their peptide ligands were characterized using chromatography, electrophoresis after fluorescent labeling of cysteine residues, and tandem mass spectrometry. Functional complementation assays in Saccharomyces cerevisiae were used to obtain and characterize cDNA sequences. Zn-speciation analysis showed that nearly 80% of the Zn extracted from the sporocarps was associated with cysteine-containing peptides in a 5 kDa complex. Screening of an R. atropurpurea cDNA library for sequences encoding peptides capable of sequestering divalent heavy metals was conducted in the Cd-hypersensitive ycf1 Delta yeast. This allowed identificati

Název v anglickém jazyce

Metallothionein-like peptides involved in sequestration of Zn in the Zn-accumulating ectomycorrhizal fungus Russula atropurpurea

Popis výsledku anglicky

Homeostatic mechanisms preventing the toxicity of free Zn ions in cells involve, among others, cytosolic Zn-binding ligands, particularly the cysteine-rich metallothioneins (MTs). Here we examined the Zn-binding peptides of Russula atropurpurea, an ectomycorrhizal fungus known for its ability to accumulate high amounts of Zn in its sporocarps. The Zn complexes and their peptide ligands were characterized using chromatography, electrophoresis after fluorescent labeling of cysteine residues, and tandem mass spectrometry. Functional complementation assays in Saccharomyces cerevisiae were used to obtain and characterize cDNA sequences. Zn-speciation analysis showed that nearly 80% of the Zn extracted from the sporocarps was associated with cysteine-containing peptides in a 5 kDa complex. Screening of an R. atropurpurea cDNA library for sequences encoding peptides capable of sequestering divalent heavy metals was conducted in the Cd-hypersensitive ycf1 Delta yeast. This allowed identificati

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EB - Genetika a molekulární biologie

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP504%2F11%2F0484" target="_blank" >GAP504/11/0484: Hyperakumulace těžkých kovů velkými houbami – molekulární, geomykologické a ekotaxonomické aspekty</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Metallomics

ISSN

1756-5901

e-ISSN

—

Svazek periodika

6

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

1693-1701

Kód UT WoS článku

000341018500014

EID výsledku v databázi Scopus

—