Abstract:
:PsbY is one of the low molecular mass subunits of oxygen-evolving photosystem II (PSII). Its location, however, has not been identified in the current crystal structure of PSII. We constructed a PsbY-deletion mutant of Thermosynechococcus elongatus, crystallized, and analyzed the crystal structure of the mutant PSII dimer. The results obtained showed that PsbY is located in the periphery of PSII close to the alpha- and beta-subunits of cytochrome b559, which corresponded to an unassigned helix in the 3.7A structure of T. vulcanus or helix X2 in the 3.0A structure of T. elongatus. Our results also indicated that the C-terminal loop of PsbY is protruded toward the stromal side, instead of the lumenal side predicted previously.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Kawakami K,Iwai M,Ikeuchi M,Kamiya N,Shen JRdoi
10.1016/j.febslet.2007.09.036subject
Has Abstractpub_date
2007-10-16 00:00:00pages
4983-7issue
25eissn
0014-5793issn
1873-3468pii
S0014-5793(07)01018-6journal_volume
581pub_type
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