Three‐dimensional architecture of phycobilisomes from  Nostoc flagelliforme  revealed by single particle electron microscopy | Zendy

Yi Zhi-Wei | Zendy; Huang Hui | Zendy; Kuang Ting-Yun | Zendy; Sui Sen-Fang | Zendy

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Three‐dimensional architecture of phycobilisomes from Nostoc flagelliforme revealed by single particle electron microscopy

Author(s) -

Yi Zhi-Wei,

Huang Hui,

Kuang Ting-Yun,

Sui Sen-Fang

Publication year - 2005

Publication title -

febs letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.593

H-Index - 257

eISSN - 1873-3468

pISSN - 0014-5793

DOI - 10.1016/j.febslet.2005.05.033

Subject(s) - phycobilisome , allophycocyanin , nostoc , electron microscope , crystallography , chemistry , biophysics , cyanobacteria , phycocyanin , biology , optics , physics , genetics , bacteria

Phycobilisomes are protein complexes that harvest light and transfer energy to the photo system. Here, the three dimensional structure of intact phycobilisomes from Nostoc flagelliforme is studied by a combination of negative stain electron microscopy and cryo‐electron microscopy. Results show that the intact phycobilisomes are composed of a tricylindrical core and six rods. Each allophycocyanin cylinder presents a double‐layered structure when viewed from the side and a triangular shape when viewed from the top. These characteristics indicate that allophycocyanin trimers in the intact phycobilisomes are arranged into hexameric oligomers in a parallel manner.

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