The secondary electron acceptor of photosystem I in Gloeobacter violaceus PCC 7421 is menaquinone-4 that is synthesized by a unique but unknown pathway

Mamoru Mimuro; Tohru Tsuchiya; Hidetoshi Inoue; Yumiko Sakuragi; Yuka Itoh; Takanori Gotoh; Hideaki Miyashita; Donald A. Bryant; Masami Kobayashi

doi:10.1016/j.febslet.2005.05.029

The secondary electron acceptor of photosystem I in Gloeobacter violaceus PCC 7421 is menaquinone-4 that is synthesized by a unique but unknown pathway

Mamoru Mimuro
, Tohru Tsuchiya
, Hidetoshi Inoue
, Yumiko Sakuragi
, Yuka Itoh
, Takanori Gotoh
, Hideaki Miyashita
, Donald A. Bryant
, Masami Kobayashi

Plant Institute

Research output: Contribution to journal › Article › peer-review

30 Scopus citations

Abstract

The secondary electron acceptor of photosystem (PS) I in the cyanobacterium Gloeobacter violaceus PCC 7421 was identified as menaquinone-4 (MQ-4) by comparing high performance liquid chromatograms and absorption spectra with an authentic compound. The MQ-4 content was estimated to be two molecules per one molecule of chlorophyll (Chl) a′, a constituent of P700. Comparative genomic analyses showed that six of eight men genes, encoding phylloquinone/MQ biosynthetic enzymes, are missing from the G. violaceus genome. Since G. violaceus clearly synthesizes MQ-4, the combined results indicate that this cyanobacterium must have a novel pathway for the synthesis of 1,4-dihydroxy-2-naphthoic acid.

Original language	English (US)
Pages (from-to)	3493-3496
Number of pages	4
Journal	FEBS Letters
Volume	579
Issue number	17
DOIs	https://doi.org/10.1016/j.febslet.2005.05.029
State	Published - Jul 27 2005

All Science Journal Classification (ASJC) codes

Biophysics
Structural Biology
Biochemistry
Molecular Biology
Genetics
Cell Biology

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10.1016/j.febslet.2005.05.029

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@article{cb08e16199274a4d893b4c0f6d89a49c,

title = "The secondary electron acceptor of photosystem I in Gloeobacter violaceus PCC 7421 is menaquinone-4 that is synthesized by a unique but unknown pathway",

abstract = "The secondary electron acceptor of photosystem (PS) I in the cyanobacterium Gloeobacter violaceus PCC 7421 was identified as menaquinone-4 (MQ-4) by comparing high performance liquid chromatograms and absorption spectra with an authentic compound. The MQ-4 content was estimated to be two molecules per one molecule of chlorophyll (Chl) a′, a constituent of P700. Comparative genomic analyses showed that six of eight men genes, encoding phylloquinone/MQ biosynthetic enzymes, are missing from the G. violaceus genome. Since G. violaceus clearly synthesizes MQ-4, the combined results indicate that this cyanobacterium must have a novel pathway for the synthesis of 1,4-dihydroxy-2-naphthoic acid.",

author = "Mamoru Mimuro and Tohru Tsuchiya and Hidetoshi Inoue and Yumiko Sakuragi and Yuka Itoh and Takanori Gotoh and Hideaki Miyashita and Bryant, \{Donald A.\} and Masami Kobayashi",

note = "Funding Information: This work was supported in part by the Grant-in-Aids for Scientific research from the MEXT, Japan (Grant No. 15370021 to M.M. and SRPA (417) to M.K.) and from the US National Science Foundation (MCB-0077586) to D.A.B. We also thank Prof. I. Enami, Tokyo University of Science for kind gift of Cyanidium caldarium . ",

year = "2005",

month = jul,

day = "27",

doi = "10.1016/j.febslet.2005.05.029",

language = "English (US)",

volume = "579",

pages = "3493--3496",

journal = "FEBS Letters",

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publisher = "John Wiley and Sons Inc.",

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T1 - The secondary electron acceptor of photosystem I in Gloeobacter violaceus PCC 7421 is menaquinone-4 that is synthesized by a unique but unknown pathway

AU - Mimuro, Mamoru

AU - Tsuchiya, Tohru

AU - Inoue, Hidetoshi

AU - Sakuragi, Yumiko

AU - Itoh, Yuka

AU - Gotoh, Takanori

AU - Miyashita, Hideaki

AU - Bryant, Donald A.

AU - Kobayashi, Masami

N1 - Funding Information: This work was supported in part by the Grant-in-Aids for Scientific research from the MEXT, Japan (Grant No. 15370021 to M.M. and SRPA (417) to M.K.) and from the US National Science Foundation (MCB-0077586) to D.A.B. We also thank Prof. I. Enami, Tokyo University of Science for kind gift of Cyanidium caldarium .

PY - 2005/7/27

Y1 - 2005/7/27

N2 - The secondary electron acceptor of photosystem (PS) I in the cyanobacterium Gloeobacter violaceus PCC 7421 was identified as menaquinone-4 (MQ-4) by comparing high performance liquid chromatograms and absorption spectra with an authentic compound. The MQ-4 content was estimated to be two molecules per one molecule of chlorophyll (Chl) a′, a constituent of P700. Comparative genomic analyses showed that six of eight men genes, encoding phylloquinone/MQ biosynthetic enzymes, are missing from the G. violaceus genome. Since G. violaceus clearly synthesizes MQ-4, the combined results indicate that this cyanobacterium must have a novel pathway for the synthesis of 1,4-dihydroxy-2-naphthoic acid.

AB - The secondary electron acceptor of photosystem (PS) I in the cyanobacterium Gloeobacter violaceus PCC 7421 was identified as menaquinone-4 (MQ-4) by comparing high performance liquid chromatograms and absorption spectra with an authentic compound. The MQ-4 content was estimated to be two molecules per one molecule of chlorophyll (Chl) a′, a constituent of P700. Comparative genomic analyses showed that six of eight men genes, encoding phylloquinone/MQ biosynthetic enzymes, are missing from the G. violaceus genome. Since G. violaceus clearly synthesizes MQ-4, the combined results indicate that this cyanobacterium must have a novel pathway for the synthesis of 1,4-dihydroxy-2-naphthoic acid.

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DO - 10.1016/j.febslet.2005.05.029

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AN - SCOPUS:21244467212

SN - 0014-5793

VL - 579

SP - 3493

EP - 3496

JO - FEBS Letters

JF - FEBS Letters

IS - 17

ER -

The secondary electron acceptor of photosystem I in Gloeobacter violaceus PCC 7421 is menaquinone-4 that is synthesized by a unique but unknown pathway

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