Literature summary for 1.10.3.9 extracted from

Boussac, A.; Selles, J.; Hamon, M.; Sugiura, M.
Properties of photosystem II lacking the PsbJ subunit (2021), Photosynth. Res., FEHLT, 0000 .

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Organism

Organism	UniProt	Comment	Textmining
Thermosynechococcus vestitus	-	-	-
Thermosynechococcus vestitus 34-H	-	-	-

Subunits

Subunits	Comment	Organism
multimer	photosystem II (PSII), the oxygen-evolving enzyme, consists of 17 trans-membrane and 3 extrinsic membrane proteins. Other subunits bind to PSII during assembly, like Psb27, Psb28, and Tsl0063	Thermosynechococcus vestitus

Synonyms

Synonyms	Comment	Organism
PSII	-	Thermosynechococcus vestitus

General Information

General Information	Comment	Organism
malfunction	in the purified photosystem II lacking the PsbJ subunit (DELTAPsbJ-PSII) an active Mn4CaO5 cluster is present in 60-70% of the centers. In these centers, although the forward electron transfer seems not affected, the Em of the secondary quinone acceptor QB/QB(-) couple increases by more than 120 mV , thus disfavoring the electron coming back on primary quinone acceptor QA. The increase of the energy gap between QA/QA(-) and QB/QB(-) could contribute in a protection against the charge recombination between the donor side and QB(-), identified at the origin of photoinhibition under low light, and possibly during the slow photoactivation process	Thermosynechococcus vestitus

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Release 2023.1 (January 2023)