Structural Studies on a Photosystem II Reaction-Center Complex Consisting of D-1 and D-2 Polypeptides and Cytochromeb-559 by Resonance Raman Spectroscopy and High-Performance Liquid Chromatography

Autor:	Hidenori Hayashi, Yasushi Koyama, Kimiyuki Satoh, Mariko Kanaji, Mitsuo Tasumi, Masao Fujiwara
Rok vydání:	1987
Předmět:	Photosynthetic reaction centre Cytochrome biology Photosystem II Chemistry Resonance Raman spectroscopy Resonance macromolecular substances General Chemistry Photochemistry symbols.namesake Crystallography symbols biology.protein Molecule Moiety Raman spectroscopy
Zdroj:	Chemistry Letters. 16:2005-2008
ISSN:	1348-0715 0366-7022
DOI:	10.1246/cl.1987.2005
Popis:	Resonance Raman spectra of chlorophyll a and β-carotene moieties have been observed from a photosystem II reaction-center complex containing the D-1 and D-2 polypeptides and cytochrome b-559. Examination of the CC double-bond and the keto CO stretching regions of chlorophyll a moiety has indicated that the Mg atom is five-coordinate and the keto CO is hydrogen-bonded. The resonance Raman spectrum of β-carotene moiety has suggested that this carotenoid molecule takes the all-trans form. This suggestion has been supported by an HPLC analysis of the extracted carotenoid.
Databáze:	OpenAIRE
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