Assertion: l tryptophan | /r/CapableOf | control decomposition of serine
Facets:
Source sentences:
text: If tryptophan synthetase or tryptophanase and/or a serine-racemizing enzyme is fixed in the above-mentioned process and ammonium ions are made present in the reaction system, the quality of obtained L-tryptophan can be highly improved and L-tryptophan can be prepared economically advantageously while controlling decomposition of serine.