PGRL1 is a transmembrane protein present in thylakoids of higher plants and algae. Arabidopsis plants lacking PGRL1 show perturbation of cyclic electron transport (CEF) around photosystem I (PSI), similar to PGR5-deficient plants. PGRL1 has been shown to interact physically with PGR5 and associate with PSI (DalCorso et al., 2008). In Chlamydomonas reinhardtii, PGRL1 is part of a protein supercomplex, composed of PSI with its own light-harvesting complex (LHCI), the photosystem II light-harvesting complex (LHCII), the cytochrome b6/f complex (Cyt b6f), ferredoxin (Fd)-NADPH oxidoreductase (FNR), responsible of the energy balance of the two photosystems and of the switch between thylakoid linear and cyclic electron transport (Iwai et al., 2010). Synonymes:

the N-terminal loop (aa 61 to 200; N-PGRL1) of PGRL1A (Q8H112, At4g22890). The N-PGRL1 protein was purified by virtue of its His-Tag using Ni-NTA Agarose (QIAGEN).

store lyophilized/reconstituted at -20°C; once reconstituted make aliquots to avoid repeated freeze-thaw cycles. Please, remember to spin tubes briefly prior to opening them to avoid any losses that might occur from lyophilized material adhering to the cap or sides of the tubes.

western blot (WB)

collection of antibodies to photosynthetic proteins

to be added when available