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Proline
Codex
(
@codex,
0
)
...
Chemical substance
Organic acid
Carboxylic acid
Amino acid
Alpha-amino acid
Proteinogenic amino acid
Created
2026-10-14
Updated
2026-10-20
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Proline
is
a
cyclic
alpha-amino acid
whose
amine
nitrogen
is joined to two
carbon
positions
within
a
five-membered
ring
. This explains the exception to
H
2
N
−
CH
(
R
)
−
COOH
in
amino acid
.
[ref]
Organic Chemistry by John McMurry
. §26.
1
, primary
alpha-amino-acid
and secondary
proline
structures
Ancestors
(8)
Proteinogenic amino acid
Alpha-amino acid
Amino acid
Carboxylic acid
Organic acid
Chemical substance
Chemistry
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Amino acid
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