Authority Sprinzl, M. and Gauss, D.H.
Reference Sprinzl, M. and Gauss, D.H. Nucl Acid Res 10, r1 (1982).
(note that in Cornish_Bowden, A. Nucl Acid Res 13, 3021-3030
(1985) the IUPAC-IUB declined to recommend a set of
abbreviations for modified nucleotides)
Contact NCBI
Scope /mod_base
Listing
Abbreviation Modified base description
------------ -------------------------
ac4c 4-acetylcytidine
chm5u 5-(carboxyhydroxylmethyl)uridine
cm 2'-O-methylcytidine
cmnm5s2u 5-carboxymethylaminomethyl-2-thiouridine
cmnm5u 5-carboxymethylaminomethyluridine
d dihydrouridine
fm 2'-O-methylpseudouridine
gal q beta,D-galactosylqueosine
gm 2'-O-methylguanosine
i inosine
i6a N6-isopentenyladenosine
m1a 1-methyladenosine
m1f 1-methylpseudouridine
m1g 1-methylguanosine
m1i 1-methylinosine
m22g 2,2-dimethylguanosine
m2a 2-methyladenosine
m2g 2-methylguanosine
m3c 3-methylcytidine
m5c 5-methylcytidine
m6a N6-methyladenosine
m7g 7-methylguanosine
mam5u 5-methylaminomethyluridine
mam5s2u 5-methoxyaminomethyl-2-thiouridine
man q beta,D-mannosylqueosine
mcm5s2u 5-methoxycarbonylmethyl-2-thiouridine
mcm5u 5-methoxycarbonylmethyluridine
mo5u 5-methoxyuridine
ms2i6a 2-methylthio-N6-isopentenyladenosine
ms2t6a N-((9-beta-D-ribofuranosyl-2-methyltiopurine-6-yl)car
bamoyl)threonine
mt6a N-((9-beta-D-ribofuranosylpurine-6-yl)N-methyl-carbam
oyl)threonine
mv uridine-5-oxyacetic acid-methylester
o5u uridine-5-oxyacetic acid (v)
osyw wybutoxosine
p pseudouridine
q queosine
s2c 2-thiocytidine
s2t 5-methyl-2-thiouridine
s2u 2-thiouridine
s4u 4-thiouridine
t 5-methyluridine
t6a N-((9-beta-D-ribofuranosylpurine-6-yl)carbamoyl)threo
nine
tm 2'-O-methyl-5-methyluridine
um 2'-O-methyluridine
yw wybutosine
x 3-(3-amino-3-carboxypropyl)uridine, (acp3)u
OTHER (requires /note= qualifier)
Amino acid abbreviations
Authority IUPAC-IUB Joint Commission on Biochemical Nomenclature.
Reference IUPAC-IUB JOint Commission on Biochemical Nomenclature.
Nomenclature and Symbolism for Amino Acids and Peptides.
Eur. J. Biochem. 138:9-37(1984).
Scope /anticodon, /codon, /transl_except
Contact EMBL
Listing (note that the abbreviations are legal values for amino acids, not the full names)
Abbreviation Amino acid name
------------ ---------------
Ala A Alanine
Arg R Arginine
Asn N Asparagine
Asp D Aspartic acid (Aspartate)
Cys C Cysteine
Gln Q Glutamine
Glu E Glutamic acid (Glutamate)
Gly G Glycine
His H Histidine
Ile I Isoleucine
Leu L Leucine
Lys K Lysine
Met M Methionine
Phe F Phenylalanine
Pro P Proline
Ser S Serine
Thr T Threonine
Trp W Tryptophan
Tyr Y Tyrosine
Val V Valine
Asx B Aspartic acid or Asparagine
Glx Z Glutamine or Glutamic acid.
Xaa X Any amino acid.
TERM termination codon