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Item _chem_comp.three_letter_code

Description

              For standard polymer components, the common three-letter code for
               the component.   Non-standard polymer components and non-polymer
               components are also assigned three-letter-codes.

               For ambiguous polymer components three-letter code should 
               be given as 'UNK'.  Ambiguous ions are assigned the code 'UNX'.
               Ambiguous non-polymer components are assigned the code 'UNL'.  

Category

Item Examples

Example 1:

alanine

ALA

Example 2:

arginine

ARG

Example 3:

asparagine

ASN

Example 4:

aspartic acid

ASP

Example 5:

ambiguous asparagine/aspartic acid

ASX

Example 6:

cysteine

CYS

Example 7:

glutamine

GLN

Example 8:

glutamic acid

GLU

Example 9:

glycine

GLY

Example 10:

ambiguous glutamine/glutamic acid

GLX

Example 11:

histidine

HIS

Example 12:

isoleucine

ILE

Example 13:

leucine

LEU

Example 14:

lysine

LYS

Example 15:

methionine

MET

Example 16:

phenylalanine

PHE

Example 17:

proline

PRO

Example 18:

serine

SER

Example 19:

threonine

THR

Example 20:

tryptophan

TRP

Example 21:

tyrosine

TRY

Example 22:

valine

VAL

Example 23:

1-methyladenosine

1MA

Example 24:

5-methylcytosine

5MC

Example 25:

2(prime)-O-methylcytodine

OMC

Example 26:

1-methylguanosine

1MG

Example 27:

N(2)-methylguanosine

2MG

Example 28:

N(2)-dimethylguanosine

M2G

Example 29:

7-methylguanosine

7MG

Example 30:

2(prime)-O-methylguanosine

0MG

Example 31:

dihydrouridine

H2U

Example 32:

ribosylthymidine

5MU

Example 33:

pseudouridine

PSU

Example 34:

acetic acid

ACE

Example 35:

formic acid

FOR

Example 36:

water

HOH

Example 37:

other

UNK

Mandatory Code

Data Type Code

 

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