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Triazine herbicide interaction with a 32000 molecular weight thylakoid protein alternative possibilities

Plant Science Letters 25(1): 99-106

Triazine herbicide interaction with a 32000 molecular weight thylakoid protein alternative possibilities

Triazine herbicides inhibit photosynthesis by binding to thylakoids. In certain resistant plant biotypes the thylaloids are somewhat modified. The specific thylakoid binding site may not be a 32,000 MW protein. This 32,000 MW protein could be adjacent to the binding site. The azido-atrazine acts as a bifunctional reagent. A high-turnover 32,000 MW thylaloid protein from Spirodela [oligorrhiza] can be depleted specifically by incubation with low levels of chloramphenicol. Plants depleted of this 32,000 MW thylakoid protein were not more tolerant to atrazine, as might be expected if this protein bore the electrostatic herbicide binding site.

Accession: 006840793

Related references

Gressel, J., 1982: Triazine herbicide interaction with a 32000 Mr thylakoid protein - alternative possibilities. Triazine herbicides inhibit photosynthesis by binding to thylakoids. However, in certain resistant biotypes, the thylakoids are somewhat modified. The author suggests that experiments with photoaffinity binding of radioactive azido-atrazine may ha...

Zurawski G.; Bohnert H.J.; Whitfield P.R.; Bottomley W., 1982: Nucleotide sequence of the gene for the molecular weight 32000 thylakoid membrane protein from spinacia oleracea and nicotiana debneyi predicts a totally conserved primary translation product of molecular weight 38950. The gene for the so-called MW 32,000 rapidly labeled photosystem II thylakoid membrane protein (designated psbA) of spinach (S. oleracea) chloroplasts is located on the chloroplast DNA in the large single-copy region immediately adjacent to one of...

Mattoo A.K.; J.B.; Wergin W.P., 1983: Is turnover of the 32000 dalton thylakoid protein a signal for adaptation of the chloroplast to triazine herbicides and to light conditions. Journal of Cellular Biochemistry Supplement (7 PART B): 319

Gressel, J., 1982: Is the site of triazine herbicide action really a 32 kilodalton thylakoid protein?. Radiolabelled atrazine was bound photoaffinitively to the 32 kilodalton thylakoid protein of susceptible weed biotypes, suggesting the protein to be the specific herbicide-binding site. However the photolabile azido group is on the side of the atr...

Boyer J.; Asselin J.; Belle R.; Ozon R., 1986: Progesterone and cyclic amp dependent protein kinase regulate in vivo the level of phosphorylation of two proteins 20000 molecular weight and 32000 molecular weight in xenopus laevis oocytes. The [32P]phosphoproteins and [35S]thiophosphoproteins were analyzed by electrophoresis and autoradiography after microinjection of [.gamma.-32P]ATP or of [35S]ATP-.gamma.-S into living Xenopus oocytes. The level of 32P incorporation into a 20-kDa...

Patel H.V., 1983: Synthesis in vitro of rat brown adipose tissue 32000 molecular weight protein. S Letters: 325-330

Sheen Y.Y.; Katzenellenbogen B.S., 1987: Antiestrogen stimulation of the production of a 37000 molecular weight secreted protein and estrogen stimulation of the production of a 32000 molecular weight secreted protein in mcf 7 human breast cancer cells. Antiestrogens (AE), such as tamoxifen, selectively increase the production of a secreted protein of 37,000 mol wt (Mr) in estrogen receptor-containing human breast cancer cells (MCF-7, but not in estrogen receptor-negative MDA-MB-231 cells), and t...

Ono T.; Koide Y.; Arai Y.; Yamashita K., 1987: Tissue specificity of calspermin a heat stable 32000 molecular weight calmodulin binding protein. We previously reported that rat testis and porcine testis contain a physicochemically indistinguishable Mr 32,000 calmodulin-binding protein, which we named "calspermin." In this study, antiserum against calspermin from porcine testis wa...

Bouillaud F.; Combes George M.; Ricquier D., 1983: Mitochondria of adult human brown adipose tissue contain a 32000 molecular weight uncoupling protein. Using both immunohistological study and photoaffinity labeling with radioactive azido-ATP, evidence is presented that the mitochondrial membranes of the brown adipose tissue [BAT] of the human adult contain a 32,000-MW uncoupling protein, which is...

French R.R.; York D.A., 1986: Proteolytic digestion of the 32000 molecular weight uncoupling protein in rat brown adipose tissue mitochondria. Biochemical Society Transactions 14(4): 757-758