Beta-amyrin synthase
Definition:
EC Tree > 5 Isomerases > 5.4 Intramolecular transferases > 5.4.99 Transferring other groups > 5.4.99.39 beta-amyrin synthase
Beta-amyrin synthase cyclizes (3S)-2,3-epoxy-2,3-dihydrosqualene into β-amyrin. Some organisms have a monofunctional β-amyrin synthase, others a multifunctional enzyme that also synthesizes α-amyrin (EC 5.4.99.40) or lupeol (EC 5.4.99.41). It appears in viruses and cellular organisms. Structurally it is an OSC.
Beta-amyrin synthase cyclizes (3S)-2,3-epoxy-2,3-dihydrosqualene into β-amyrin. Some organisms have a monofunctional β-amyrin synthase, others a multifunctional enzyme that also synthesizes α-amyrin (EC 5.4.99.40) or lupeol (EC 5.4.99.41). It appears in viruses and cellular organisms. Structurally it is an OSC.
References:
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