Masaki Akino

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Sepiapterin is a structural isomer of biopterin whose reduced form is thought to play a role as cofactor in hydroxylation of aromatic amino acids and other compounds (1). Although biosyntheses of these unconjugated pterins have not been wholly elucidated, there might be a possibility of a biosynthetic route of the cofactor via sepiapterin in some organisms(More)
This paper describes a study of the use of sea urchin skeletons, a waste product of food-processing, as a biological filter medium. We obtained skeletal materials (tests, spines, and teeth) from the northern sea urchin Strongylocentrotus nudus by alkali treatment and evaluated their performance as biological filter media in an aquarium experiment. The(More)
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