An organic heterotricyclic compound resulting from the formal epoxidation of the 2-3 double bond of the 1,4-naphthoquinone moiety of phosphatoquinone B. It is isolated from the culture broth of Streptomyces sp.TC-0363 and exhibits inhibitory activity against the enzyme protein tyrosine phosphatase.
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This entity has been manually annotated by the ChEBI Team.
An EC 3.1.3.* (phosphoric monoester hydrolase) inhibitor which interferes with the activity of the enzyme protein tyrosine phosphatases (PTPs), EC 3.1.3.48, involved in the removal of phosphate groups from phosphorylated tyrosine residues on proteins.