Sulfate assimilation in Rhodopseudomonas globiformis

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dc.contributor.author Hashwa, Fuad
dc.contributor.author Lmoff, Johannes
dc.contributor.author Then, Johann
dc.contributor.author Truper, Hans
dc.date.accessioned 2016-03-23T10:38:15Z
dc.date.available 2016-03-23T10:38:15Z
dc.date.copyright 1981
dc.date.issued 2016-03-23
dc.identifier.issn 0302-8933 en_US
dc.identifier.uri http://hdl.handle.net/10725/3394
dc.description.abstract Rhodopseudomonas globiformis is able to grow on sulfate as sole source of sulfur, but only at concentrations below 1 mM. Good growth was observed with thiosulfate, cysteine or methionine as sulfur sources. Tetrathionate supported slow growth. Sulfide and sulfite were growth inhibitory. Growth inhibition by higher sulfate concentrations was overcome by the addition of O-acetylserine, which is known as derepressor of sulfate-assimilating enzymes, and by reduced glutathione. All enzymes of the sulfate assimilation pathway. ATP-sulfurylase, adenylylphosphate-sulfotransferase, thiosulfonate reductase and O-acetylserine sulfhydrylase are present in R. globiformis. Sulfate was taken up by the cells and the sulfur incorporated into the amino acids cysteine, methionine and homocysteine. It is concluded, that the failure of R. globiformis to grow on higher concentrations of sulfate is caused by disregulation of the sulfate assimilation pathway. Some preliminary evidence for this view is given in comparing the activities of some of the involved enzymes after growth on different sulfur sources and by examining the effect of O-acetylserine on these activities. en_US
dc.language.iso en en_US
dc.title Sulfate assimilation in Rhodopseudomonas globiformis en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SAS en_US
dc.author.idnumber 199390070 en_US
dc.author.woa N/A en_US
dc.author.department Natural Sciences en_US
dc.description.embargo N/A en_US
dc.relation.journal Archives of Microbiology en_US
dc.journal.volume 130 en_US
dc.journal.issue 3 en_US
dc.article.pages 234-237 en_US
dc.keywords Rhodospirillaceae en_US
dc.keywords Rhodopseudomonas globiformis en_US
dc.keywords Sulfate assimilation en_US
dc.identifier.doi http://dx.doi.org/10.1007/BF00459525 en_US
dc.identifier.ctation Imhoff, J. F., Then, J., Hashwa, F., & Trüper, H. G. (1981). Sulfate assimilation in Rhodopseudomonas globiformis. Archives of Microbiology, 130(3), 234-237. en_US
dc.author.email fhashwa@lau.edu.lb
dc.identifier.url http://link.springer.com/article/10.1007/BF00459525

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