Aquilegia, Vol. 20 No. 4, October-December 1996: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1081/thumbnail.jp

Aquilegia, Vol. 20 No. 2, April-June 1996: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1079/thumbnail.jp

Aquilegia, Vol. 17 No. 1, January-March 1993: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1066/thumbnail.jp

Aquilegia, Vol. 18 No. 1, January- February 1994: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1069/thumbnail.jp

Aquilegia, Vol. 18 No. 2, March-April 1994: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1070/thumbnail.jp

Aquilegia, Vol. 19 No. 1, January-March 1995: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1074/thumbnail.jp

Redox regulation of PEP activity during seedling establishment in Arabidopsis thaliana

Activation of the plastid-encoded RNA polymerase is tightly controlled and involves a network of phosphorylation and, as yet unidentified, thiol-mediated events. Here, we characterize PLASTID REDOX INSENSITIVE2, a redox-regulated protein required for full PEP-driven transcription. PRIN2 dimers can be reduced into the active monomeric form by thioredoxins through reduction of a disulfide bond. Exposure to light increases the ratio between the monomeric and dimeric forms of PRIN2. Complementation of prin2-2 with different PRIN2 protein variants demonstrates that the monomer is required for light-activated PEP-dependent transcription and that expression of the nuclear-encoded photosynthesis genes is linked to the activity of PEP. Activation of PEP during chloroplast development likely is the source of a retrograde signal that promotes nuclear LHCB expression. Thus, regulation of PRIN2 is the thiol-mediated mechanism required for full PEP activity, with PRIN2 monomerization via reduction by TRXs providing a mechanistic link between photosynthetic electron transport and activation of photosynthetic gene expression.</p

Aquilegia, Vol. 19 No. 3, July-September 1995: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1076/thumbnail.jp

Aquilegia, Vol. 20 No. 3, July-September 1996: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1080/thumbnail.jp

Aquilegia, Vol. 17 No. 3, July-December 1993: Newsletter of the Colorado Native Plant Society

https://epublications.regis.edu/aquilegia/1068/thumbnail.jp