Crystallographic Information Framework

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Protein Data Bank exchange dictionary (pdbx) version 1.0521




   Chemical sequence expressed as string of one-letter 
   amino acid codes. Modifications and non-standard 
   amino acids are coded as X.


A  for alanine or adenine
B  for ambiguous asparagine/aspartic-acid
R  for arginine
N  for asparagine
D  for aspartic-acid
C  for cysteine or cystine or cytosine
Q  for glutamine
E  for glutamic-acid
Z  for ambiguous glutamine/glutamic acid
G  for glycine or guanine
H  for histidine
I  for isoleucine
L  for leucine
K  for lysine
M  for methionine
F  for phenylalanine
P  for proline
S  for serine
T  for threonine or thymine
W  for tryptophan
Y  for tyrosine
V  for valine
U  for uracil
O  for water
X  for other

Type: text

Mandatory item: no

_entity_poly.ndb_seq_one_letter_code (cif_rcsb.dic version 1.1)

Category: entity_poly