Abstract：
:Total level of O-acetyl-L-serine(thiol)lyase (OASTL) activity observed in Monoraphidium braunii fed-repleted cells decreases up to 40% after 24 h the carbon source was removed from the culture; however, no significant change in the activity is observed in N-starved cells. On the other hand, sulfur starvation induces OASTL activity in M. braunii, which may increase 2.5-fold after 36 h. Normal intracellular level of the activity is restored when a sulfur source, such as sulfate, sulfite, L-cysteine, L-methionine or glutathione is added to the culture. The induction of the OASTL activity requires de novo synthesis of protein, and thus the presence in the culture of adequate carbon and nitrogen sources. The OASTL isoenzymes from M. braunii cells are differently affected by S-starvation.
journal_name
J Physiol Biochemjournal_title
Journal of physiology and biochemistryauthors
González-Arroyo JG,Vega JM,Pérez-Castiñeira JRsubject
Has Abstractpub_date
1998-09-01 00:00:00pages
141-8issue
3eissn
1138-7548issn
1877-8755journal_volume
54pub_type
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