The structure 01 a plapt photosytem I supercomplex at 3.4 A resolution  

Oleh:

O' Drory, A. Amunts

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: NATURE (keterangan: ada di Proquest) vol. 447 no. 7140 (May 2007), page 58.

Ketersediaan

Perpustakaan FK Nomor Panggil: N01.K.2007.05 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

All higher organisms on Earth receive energy directly or indirectly from oxygenic photosynthesis performed by plants,gre~ algae and cyanobacteria. Photosystem I (PSI) is a supercomplex of a reaction centre and light-harvesting complexes, It! generates the most negative redox potential in nature, and thus largely determines the global amount of enthalpy in livi~ systems. We report the structure of plant PSI at 3.4 A resolution, revealing 17 protein subunits. PsaN was identified intij luminal side of the supercomplex, and most of the amino acids in the reaction centre were traced. The crystal structureo!P: provides a picture at near atomic detail of 11 out of 12 protein subunits of the reaction centre. At this level, 168 chloropnji (65 assigned with orientations for Qx and Qy transition dipole moments), 2 phylloquinones, 3 Fe4S4 clusters and 5 carotenoids are described. This structural information extends the understanding of the most efficient nano-photochemic machine in nature.

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