Abstract:
:Thioredoxin is crucial for the maintenance of the redox status of cells of all types. Mammalian thioredoxin is secreted from various types of cells, although the mechanism underlying has not yet been clarified. Previously, we demonstrated that thioredoxin was released from Saccharomyces cerevisiae after treatment with ethanol. In this paper, we show that as well as ethanol, low-pH shock and hypoosmotic shock release thioredoxin. Low-molecular-weight proteins in yeast cells were preferentially released by treatment with ethanol and low-pH shock. A cell wall integrity pathway seems partially involved in the hypoosmotic shock-induced release of thioredoxin. Considerable amounts of thioredoxin were present in the insoluble fractions of the cells, a portion of which was associated with lipid microdomains that are resistant to nonionic detergent at 4 degrees C. The intracellular localization of thioredoxin may influence the efficiency of its release from yeast cells with ethanol.
journal_name
Appl Microbiol Biotechnoljournal_title
Applied microbiology and biotechnologyauthors
Takeuchi Y,Nomura W,Ohdate T,Tamasu S,Masutani H,Murata K,Izawa S,Yodoi J,Inoue Ydoi
10.1007/s00253-007-0949-1subject
Has Abstractpub_date
2007-07-01 00:00:00pages
1393-9issue
6eissn
0175-7598issn
1432-0614journal_volume
75pub_type
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