2XB3

The Structure of Cyanobacterial PsbP

Summary for 2XB3

• Entry DOI: 10.2210/pdb2xb3/pdb
• Descriptor: PSBP PROTEIN, ZINC ION (3 entities in total)
• Functional Keywords: photosynthesis, zinc-binding, photosystem
• Biological source: THERMOSYNECHOCOCCUS ELONGATUS
• Total number of polymer chains: 1
• Total formula weight: 18413.92

Authors

Michoux, F.,Takasaka, K.,Nixon, P.,Murray, J.W. (deposition date: 2010-04-03, release date: 2010-08-25, Last modification date: 2024-05-08)

Primary citation

Michoux, F.,Takasaka, K.,Boehm, M.,Nixon, P.,Murray, J.W.
The Structure of Cyanop at 2.8A: Implications for the Evolution and Function of the Psbp Subunit of Photosystem II.
Biochemistry, 49:7411-, 2010

PubMed Abstract: We present here the crystal structure of CyanoP (Tlr2075) from Thermosynechococcus elongatus at 2.8 A. CyanoP is a substoichiometric component of the isolated cyanobacterial Photosystem II (PSII) complex, distantly related to the PsbP extrinsic subunit of the oxygen-evolving PSII complex in higher plants and green algae. Despite the relatively low degree of sequence similarity, we have found that CyanoP adopts the same beta-sandwich fold as higher-plant PsbP and contains a well-conserved metal (zinc)-binding site that is also present in plant PsbP. Our results support the idea that CyanoP represents the basal structural fold of the PsbP superfamily.

PubMed: 20698571
DOI: 10.1021/BI1011145

Experimental method

X-RAY DIFFRACTION (2.8 Å)