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Deafblindness: a challenge for assessment - is the ICF a useful tool?
Linköpings universitet, Institutionen för beteendevetenskap och lärande. Linköpings universitet, Filosofiska fakulteten.
2003 (engelsk)Inngår i: International Journal of Audiology, ISSN 1499-2027, E-ISSN 1708-8186, Vol. 42, s. S140-S142Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A strain of Saccharomyces cerevisiae lacking the GPD2 gene, encoding one of the glycerol-3-phosphate dehydrogenases, grows slowly under anaerobic conditions, due to reductive stress caused by the accumulation of cytoplasmic NADH. We used 2D-PAGE to study the effect on global protein expression of reductive stress in the anaerobically grown gpd2 strain. The most striking response was a strongly elevated expression of Tdh1p, the minor isoform of glyceraldehyde-3-phosphate dehydrogenase. This increased expression could be reversed by the addition of acetoin, a NADH-specific redox sink, which furthermore largely restored anaerobic growth of the gpd2 strain. Additional deletion of the TDH1 gene (but not of TDH2 or TDH3) improved anaerobic growth of the gpd2 strain. We therefore propose that TDH1 has properties not displayed by the other TDH isogenes and that its expression is regulated by reductive stress caused by an excess of cytoplasmic NADH.

sted, utgiver, år, opplag, sider
Informa Healthcare , 2003. Vol. 42, s. S140-S142
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URN: urn:nbn:se:liu:diva-72279DOI: 10.1007/s00294-003-0469-1ISI: 184591400019OAI: oai:DiVA.org:liu-72279DiVA, id: diva2:459045
Tilgjengelig fra: 2011-11-24 Laget: 2011-11-24 Sist oppdatert: 2017-12-08

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