Assertion: l tryptophan | /r/CapableOf | comprise reacting indole
Facets:
value: with l-serine
type: OTHER
Source sentences:
text: In accordance with the present invention, the foregoing first and second objects can be attained by a process for the preparation of L-tryptophan which comprises reacting indole with L-serine in the presence of tryptophan synthetase or tryptophanase, wherein indole and DL-serine or D-serine are used and a serine-racemizing enzyme is included in the reaction system to convert at least a part of D-serine to L-serine.