Information on EC - FAD-AMP lyase (cyclizing)

for references in articles please use BRENDA:EC4.6.1.15
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IUBMB Comments
Requires Mn2+ or Co2+. While FAD was the best substrate tested , the enzyme also splits ribonucleoside diphosphate-X compounds in which X is an acyclic or cyclic monosaccharide or derivative bearing an X-OH group that is able to attack internally the proximal phosphorus with the geometry necessary to form a P=X product; either a five-atom monocyclic phosphodiester or a cis-bicyclic phosphodiester-pyranose fusion. The reaction is strongly inhibited by ADP or ATP but is unaffected by the presence of the product, cFMN.
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The expected taxonomic range for this enzyme is: Eukaryota, Bacteria
dAK, Flavine-adenine-dinucleotide cyclase, FMN cyclase, FMN cyclase/dha kinase, Rivoflavin cyclic phosphate synthase, TKFC, triokinase/FMN cyclase, more
FAD = AMP + riboflavin cyclic-4',5'-phosphate
show the reaction diagram
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