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4 definitions found
From:
DICT.TW English-Chinese Dictionary 英漢字典
pep·sin
/ˈpɛpsən/
胃液素,酸蛋白□
From:
DICT.TW English-Chinese Medical Dictionary 英漢醫學字典
pep·sin
/ˈpɛpsən/
名詞
From:
Webster's Revised Unabridged Dictionary (1913)
Pep·sin
n.
Physiol. Chem.
A
proteolytic
enzyme
(
MW
34,500)
contained
in
the
secretory
glands
of
the
stomach
.
In
the
gastric
juice
it
is
united
with
dilute
hydrochloric
acid
(0.2
per
cent
,
approximately
)
and
the
two
together
constitute
the
active
portion
of
the
digestive
fluid
.
It
degrades
proteins
to
proteoses
and
peptides
,
and
is
notable
for
having
a
very
low
pH
optimum
for
its
activity
.
It
is
the
active
agent
in
the
gastric
juice
of
all
animals
.
Note:
☞
As
prepared
from
the
glandular
layer
of
pigs
'
or
calves
'
stomachs
it
constitutes
an
important
article
of
pharmacy
.
◄
►
From:
WordNet (r) 2.0
pepsin
n
:
an
enzyme
produced
in
the
stomach
that
splits
proteins
into
peptones
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