leucine
n . 白氨酸
白氨酸
leucine n 1 :
a white crystalline amino acid occurring in proteins that is essential for nutrition ;
obtained by the hydrolysis of most dietary proteins Leucine \
Leu "
cine \ (
l [=
oo ]"
s [=
e ]
n ),
Leucin \
Leu "
cin \(
l [=
u ]"
s [
i ^]
n ),
n . [
Gr .
leyko `
s white .] (
Physiol .
Chem .)
a naturally occurring alpha -
amino acid ({(
CH3 )
2CH .
CH2 .
CH (
NH2 )-
COOH }),
one of the building units of almost all proteins of living organisms ,
both animal and vegetable .
It is one of the essential amino acids (
not synthesized by the human body ,
a required component for proper nutrition ),
and is hydrophobic in character when bound in proteins .
In isolated form it is a white ,
crystalline ,
zwitterionic substance formed ,
e .
g .
by the decomposition of proteins by pancreatic digestion ,
by the action of boiling dilute mineral acid ,
or by putrefaction .
Chemically it is to be considered as amido -
caproic acid .
It occurs as two optical isomers ,
the L -
and D -
forms .
The L -
form ,
L -
leucine ,
is the natural form ,
present in most proteins .
[
1913 Webster PJC ]
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7 Foods High in Leucine and Why You Need It - WebMD 10 Foods High in Leucine Its Benefits - Cleveland Clinic Health . . . Leucine - Wikipedia