10.1021/bi100217h.s002
Simon A. Jackson
Simon A.
Jackson
Robert D. Fagerlund
Robert D.
Fagerlund
Sigurd M. Wilbanks
Sigurd M.
Wilbanks
Julian J. Eaton-Rye
Julian J.
Eaton-Rye
Crystal Structure of PsbQ from <i>Synechocystis</i> sp. PCC 6803 at 1.8 Å: Implications for Binding and Function in Cyanobacterial Photosystem II
American Chemical Society
2010
Thermosynechococcus elongatus
crystal structure
cyanobacterial PsbQ
helical core
Synechocystis sp
Cyanobacterial Photosystem IIIn Synechocystis sp
PCC 6803
Thermosynechococcus vulcanus
photosystem II
crystal Structure
divalent metal binding site
PSII
interaction site
2010-04-06 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Crystal_Structure_of_PsbQ_from_i_Synechocystis_i_sp_PCC_6803_at_1_8_Implications_for_Binding_and_Function_in_Cyanobacterial_Photosystem_II/2779273
In <i>Synechocystis</i> sp. PCC 6803, PsbQ is associated with photosystem II (PSII) complexes with the highest activity and stability. However, this subunit is not found in PSII X-ray crystallographic structures from <i>Thermosynechococcus elongatus</i> or <i>Thermosynechococcus vulcanus</i>. We present the crystal structure of cyanobacterial PsbQ determined in the presence and absence of Zn<sup>2+</sup>. The protein has a well-defined helical core, containing four helices arranged in an up−down−up−down fold. A conserved potential interaction site composed of a divalent metal binding site and adjacent hydrophobic pocket has been identified.