This is an archive copy of the IUCr web site dating from 2008. For current content please visit
https://www.iucr.org.
Item _chem_comp.one_letter_code
| Top | Dictionary | Category Groups | Categories | Items | Data |
Description
For standard polymer components, the one-letter code for
the component. If there is not a standard one-letter code
for this component, or if this is a non-polymer
component, the one-letter code should be given as 'X'.
This code may be preceded by a '+' character to indicate
that the component is a modification of a standard
component.
Category
chem_comp
Item Examples
Example 1:
alanine or adenine
A
Example 2:
ambiguous asparagine/aspartic-acid
B
Example 3:
arginine
R
Example 4:
asparagine
N
Example 5:
aspartic-acid
D
Example 6:
cysteine or cystine or cytosine
C
Example 7:
glutamine
Q
Example 8:
glutamic-acid
E
Example 9:
ambiguous glutamine/glutamic acid
Z
Example 10:
glycine or guanine
G
Example 11:
histidine
H
Example 12:
isoleucine
I
Example 13:
leucine
L
Example 14:
lysine
K
Example 15:
methionine
M
Example 16:
phenylalanine
F
Example 17:
proline
P
Example 18:
serine
S
Example 19:
threonine or thymine
T
Example 20:
tryptophan
W
Example 21:
tyrosine
Y
Example 22:
valine
V
Example 23:
uracil
U
Example 24:
water
O
Example 25:
other
X
Mandatory Code
no
Data Type Code
uchar1
| Top | Dictionary | Category Groups | Categories | Items | Data |
This HTML dictionary was created using the
CIFLIB C Language Application Program Interface
at the
Resource Collaboratory for Structural Bioinformatics
Rutgers University, Department of Chemistry
New Brunswick, New Jersey
help@rcsb.rutgers.edu