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001-es BibID:BIBFORM027865
Első szerző:Vissi Emese (biokémikus, biológus)
Cím:Functional analysis of the Neurospora crassa PZL-1 protein phosphatase by expression in budding and fission yeast / Emese Vissi, Josef Clotet, Eulalia de Nadal, Anna Barceló, Éva Bakó, Pál Gergely, Viktor Dombrádi, Joaquín Ariño
Megjegyzések:The gene pzl-1 from the filamentous fungus Neurospora crassa encodes a putative Ser/Thr protein phosphatase that is reminiscent of the Ppz1/Ppz2 and Pzh1 phosphatases from Saccharomyces cerevisiae and Schizosaccharomyces pombe, respectively. The entire PZL-1 protein, as well as its carboxyl-terminal domain, have been expressed in Escherichia coli as active protein phosphatases. To characterize its cellular role, PZL-1 was also expressed in Sz. pombe and in S. cerevisiae. Expression of PZL-1 in S. cerevisiae from the PPZ1 promoter was able to rescue the altered sensitivity to caffeine and lithium ions of a ppz1 strain. Furthermore, high copy number expression of PZL-1 alleviated the lytic phenotype of a S. cerevisiae slt2/mpk1 mitogen-activated protein (MAP) kinase mutant, similarly to that described for PPZ1, and mimicked the effects of high levels of Ppz1 on cell growth. Expression of PZL-1 in fission yeast from a weak version of the nmt1 promoter fully rescued the growth defect of a pzh1Delta strain in high potassium, but only partially complemented the sodium-hypertolerant phenotype. Strong overexpression of the N. crassa phosphatase in Sz. pombe affected cell growth and morphology. Therefore, PZL-1 appears to fulfil every known function carried out by its S. cerevisiae counterpart, despite the marked divergence in sequence within their NH(2)-terminal moieties.
Tárgyszavak:Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban
PPZ phosphatases
functional expression
salt tolerance
külföldön készült közlemény
Megjelenés:Yeast. - 18 (2001), p. 115-124. -
További szerzők:Clotet, Josef de Nadal, Eulalia Barceló, Anna Ariño, Joaquín Bakó Éva (1958-) (biokémikus) Gergely Pál (1947-) (biokémikus) Dombrádi Viktor (1953-) (biokémikus)
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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