S
Stephen Tottey
Researcher at University of Newcastle
Publications - 26
Citations - 2163
Stephen Tottey is an academic researcher from University of Newcastle. The author has contributed to research in topics: Chlamydomonas & Copper. The author has an hindex of 19, co-authored 25 publications receiving 1999 citations. Previous affiliations of Stephen Tottey include Newcastle University & University of California, Los Angeles.
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Journal ArticleDOI
A regulator of nutritional copper signaling in Chlamydomonas is an SBP domain protein that recognizes the GTAC core of copper response element
Janette Kropat,Stephen Tottey,Rainer P. Birkenbihl,Nathalie Depège,Peter Huijser,Sabeeha S. Merchant +5 more
TL;DR: The CRR1 locus, required for both activating and repressing target genes of a copper- and hypoxia-sensing pathway in Chlamydomonas, encodes a 1,232-residue candidate transcription factor with a plant-specific DNA-binding domain named SBP, ankyrin repeats, and a C-terminal Cys-rich region, with similarity to a Drosophila metallothionein.
Journal ArticleDOI
Between a rock and a hard place: trace element nutrition in Chlamydomonas.
Sabeeha S. Merchant,Michael D. Allen,Janette Kropat,Jeffrey L. Moseley,Joanne C. Long,Stephen Tottey,Aimee M. Terauchi +6 more
TL;DR: The Chlamydomonas model is ideal for future investigation of nutritional manganese deficiency and selenoenzyme function and is also suited for studies of trace nutrient interactions, nutrition-dependent metabolic changes, the relationship between photo-oxidative stress and metal homeostasis.
Journal ArticleDOI
Arabidopsis CHL27, located in both envelope and thylakoid membranes, is required for the synthesis of protochlorophyllide.
Stephen Tottey,Maryse A. Block,Michael D. Allen,Tomas Westergren,Catherine Albrieux,Henrik Vibe Scheller,Sabeeha S. Merchant,Poul Erik Jensen +7 more
TL;DR: Fractionation of Arabidopsis chloroplast membranes shows that Crd1/CHL27 is equally distributed on a membrane-weight basis in the thylakoid and inner-envelope membranes.
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Understanding how cells allocate metals using metal sensors and metallochaperones.
TL;DR: The insights into metal specificity in cells provided by studies of ArsR-SmtB DNA binding, metal-responsive transcriptional repressors, and a bacterial copper chaperone are reviewed, highlighting the contributions of protein-protein interactions to metal speciation.
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Two Menkes-type atpases supply copper for photosynthesis in Synechocystis PCC 6803.
TL;DR: It is shown that CtaA and PacS facilitate switching to the use of copper (in plastocyanin) as an alternative to iron (in cytochrome c 6) for the carriage of electrons within the thylakoid lumen.