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Information on EC 1.14.99.55 - lytic starch monooxygenase

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IUBMB Comments
The enzyme cleaves starch in an oxidative manner. It releases fragments of starch with a D-glucono-1,5-lactone at the reducing end. The initially formed alpha-D-glucono-1,5-lactone at the reducing end of the shortend amylose chain quickly hydrolyses spontaneously to the aldonic acid. In vitro ascorbate has been found to be able to serve as reducing agent. The enzyme contains copper at the active site.
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The enzyme appears in viruses and cellular organisms
Reaction Schemes
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D-glucono-1,5-lactone-terminated malto-oligosaccharides
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short-chain malto-oligosaccharides
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Synonyms
AA13, ANIA_05463, ANIA_06103, AO090701000246, ATEG_07286, LPMO, LPMO13A, LPMO13B, MGCH7_ch7g978, More, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
starch + reduced acceptor + O2 = D-glucono-1,5-lactone-terminated malto-oligosaccharides + short-chain malto-oligosaccharides + acceptor + H2O
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