Data Item _entity_poly.pdbx_seq_one_letter_code

General

Item name
_entity_poly.pdbx_seq_one_letter_code
Category name
entity_poly
Attribute name
pdbx_seq_one_letter_code
Required in PDB entries
no
Required for PDB deposition
yes
Used in current PDB entries
Yes, in about 99.5 % of entries

Item Description

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

Additional Descriptive Information for Depositors

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

Item Example

 
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

Additional Item Example for Depositors

 HHHH(MSE)AKQRSG or AUCGGAAU

Data Type

Data type code
text
Data type detail
text item types / multi-line text ...
Primitive data type code
char
Regular expression
[][ \n\t()_,.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*
Deposition data type
sequence_dep
Deposition regular expression
[a-zA-Z0-9\t \r\n\v\f\(\)]+$

Aliases

Alias Item Name Dictionary Name Dictionary Version
_entity_poly.ndb_seq_one_letter_code cif_rcsb.dic 1.1