3LS1

Crystal Structure of Cyanobacterial PsbQ from Synechocystis sp. PCC 6803 complexed with Zn2+

Summary for 3LS1

• Entry DOI: 10.2210/pdb3ls1/pdb
• Related: 3LS0
• Descriptor: Sll1638 protein, ZINC ION (3 entities in total)
• Functional Keywords: photosynthesis, four helix bundle
• Biological source: Synechocystis sp.
• Total number of polymer chains: 2
• Total formula weight: 29478.62

Authors

Jackson, S.A.,Fagerlund, R.D.,Wilbanks, S.M.,Eaton-Rye, J.J. (deposition date: 2010-02-12, release date: 2010-03-31, Last modification date: 2023-11-01)

Primary citation

Jackson, S.A.,Fagerlund, R.D.,Wilbanks, S.M.,Eaton-Rye, J.J.
Crystal Structure of PsbQ from Synechocystis sp. PCC 6803 at 1.8 A: Implications for Binding and Function in Cyanobacterial Photosystem II
Biochemistry, 49:2765-2767, 2010

PubMed Abstract: In Synechocystis 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 Thermosynechococcus elongatus or Thermosynechococcus vulcanus. We present the crystal structure of cyanobacterial PsbQ determined in the presence and absence of Zn(2+). 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.

PubMed: 20210304
DOI: 10.1021/bi100217h

Experimental method

X-RAY DIFFRACTION (1.85 Å)