With no explanation, label each line with "O", "other-chemicalthing", "other-biologything", "art-broadcastprogram", "art-film", "art-music", "art-other", "art-painting", "art-writtenart" or "building-airport" preceded by ":".
Second
,
glutathione
is
synthesized
from
γ-glutamylcysteine
and
glycine
(
in
glutathione
homologues
,
β-alanine
or
serine
)
catalyzed
by
glutathione
synthetase
.
Second:O
,:O
glutathione:other-chemicalthing
is:O
synthesized:O
from:O
γ-glutamylcysteine:other-chemicalthing
and:O
glycine:other-chemicalthing
(:O
in:O
glutathione:other-chemicalthing
homologues:O
,:O
β-alanine:other-chemicalthing
or:O
serine:other-chemicalthing
):O
catalyzed:O
by:O
glutathione:other-biologything
synthetase:other-biologything
.:O