Enzyme Nomenclature

List of Symbols and Abbreviations Used in the Enzyme List

A(electron) acceptor
AdoHcy S-adenosyl-L-homocysteine
AdoMet S-adenosyl-L-methionine
ADP adenosine 5'-diphosphate
AH2 reduced (electron) acceptor
Ala L-alanine
AMP adenosine 5'-phosphate
AraL-arabinose
ArgL-arginine
AsnL-asparagine
AspL-aspartic acid
ATP adenosine 5'-triphosphate
CDP cytidine 5'-diphosphate
CMP cytidine 5'-phosphate
CoA coenzyme A
CTP cytidine 5'-triphosphate
CysL-cysteine
DNA deoxyribonucleic acid
dTDP thymidine 5'-diphosphate
dTMP thymidine 5'-phosphate
DTT dithiothreitol
dTTP thymidine 5'-triphosphate
EDTA ethylenediaminetetraacetic acid
FAD flavin-adenine dinucleotide
FADH2 reduced flavin-adenine dinucleotide
FMN flavin mononucleotide (riboflavin 5'-phosphate)
FMNH2 reduced flavin mononucleotide (riboflavin 5'-phosphate)
FruD-fructose
FucL-fucose
GalD-galactose
GDP guanosine 5'-diphosphate
GlcD-glucose
GlcND-glucosamine
GlcNAcN-acetyl-D-glucosamine
GlnL-glutamine
GluL-glutamic acid
Gly glycine
GMP guanosine 5'-phosphate
GSH glutathione
GSSGglutathione disulfide
GTP guanosine 5'-triphosphate
HisL-histidine
Ido idose
IDP inosine 5'-diphosphate
Ig immunoglobulin
IleL-isoleucine
IMP inosine 5'-phosphate
ITP inosine 5'-triphosphate
Kdo 3-deoxy-α-D-manno-oct-2-ulopyranosylonate
Km Michaelis constant
LeuL-leucine
LysL-lysine
ManD-mannose
MetL-methionine
mRNA messenger ribonucleic acid
Mur muramic acid
NAD(P)+ indicates either NAD+ or NADP+
NAD(P)H indicates either NADH or NADPH
NAD+ β-nicotinamide-adenine dinucleotide
NADH reduced β-nicotinamide-adenine dinucleotide
NADP+ β-nicotinamide-adenine dinucleotide phosphate
NADPH reduced β-nicotinamide-adenine dinucleotide phosphate
NDP nucleoside 5'-diphosphate
Neu neuraminate
NeuNAcN-acetylneuraminate
NMN nicotinamide mononucleotide
NMP nucleoside 5'-phosphate
NTP nucleoside 5'-triphosphate
OrnL-ornithine
-P-phosphate (in diagrams only)
Piphosphate (in diagrams only)
PPidiphosphate (in diagrams only)
PEP phosphoenolpyruvate
PheL-phenylalanine
PQQ pyrroloquinoline quinone
ProL-proline
PylL-pyrrolysine
RhaL-rhamnose
RibD-ribose
RNA ribonucleic acid
rRNA ribosomal ribonucleic acid
SarN-methylglycine (sarcosine)
SecL-selenocysteine
SerL-serine
ThrL-threonine
tRNA transfer ribonucleic acid
TrpL-tryptophan
TyrL-tyrosine
UDP uridine 5'-diphosphate
UMP uridine 5'-phosphate
UTP uridine 5'-triphosphate
ValL-valine
Vmax maximum or limiting velocity
Xaa symbol for an amino acid of unknown constitution in peptide formula
XMP xanthosine 5'-phosphate
Xyl D-xylose

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