Prenylated quinones are membrane-associated metabolites that serve as vital electron
carriers for respiration and photosynthesis. The UbiE (EC 2.1. 1.201)/MenG (EC 2.1. 1.163) …

Phylloquinone (vitamin K 1) is synthesized in cyanobacteria and in chloroplasts of plants,
where it serves as electron carrier of photosystem I. The last step of phylloquinone synthesis …

Prenylquinones are isoprenoid compounds with a characteristic quinone structure and
isoprenyl tail that are ubiquitous in almost all living organisms. There are four major …

Ubiquinone (also known as coenzyme Q) is a ubiquitous lipid-soluble redox cofactor that is
an essential component of electron transfer chains. Eleven genes have been implicated in …

Mutation of Arabidopsis thaliana NAD (P) H DEHYDROGENASE C1 (NDC1; At5g08740)
results in the accumulation of demethylphylloquinone, a late biosynthetic intermediate of …

Roles and functions of isoprenoid quinones (phylloquinone, plastoquinone-9) and α-
tocopherol were investigated in cyanobacteria. Comparative genome analyses of 14 …

Naturally occurring isoprenoid quinones mediate electron transfer in respiratory or
photosynthetic chains of living organisms. Tremendous progress has been made in the …

PQ-9 (plastoquinone-9) has a central role in energy transformation processes in
cyanobacteria by mediating electron transfer in both the photosynthetic as well as the …

A gene encoding a methyltransferase (menG) was identified in Synechocystis sp. PCC 6803
as responsible for transferring the methyl group to 2-phytyl-1, 4-naphthoquinone in the …

Coenzyme Q (ubiquinone or CoQ) is a conserved polyprenylated lipid essential for
mitochondrial respiration. CoQ is composed of a redox-active benzoquinone ring and a long …