Kaiping, S. and Soll, Jürgen and Schultz, Gernot
Site of methylation of 2-phytyl-1,4-naphthoquinol in phylloquinone (vitamin K1) synthesis in spinach chloroplasts.
In: Phytochemistry, Volume 23, Issue 1, 1984, Pages 89-91, Vol. 23, No. 1: pp. 89-91
Phylloquinol (the quinol form of vitamin K1) is synthesized from 2-phytyl-1,4-naphthoquinol and S-adenosylmethionine at the thylakoid membranes of spinach chloroplasts. The addition of soluble stroma protein (chloroplast extract) is necessary S-Adenosylhomocysteine acts as strong competitive inhibitor.