AASA	L-aminoadipate-semialdehyde
AAT	aspartate aminotransferase
ABC	ATP BINDING CASSETTE
ABRE	abscisic acid-responsive elements
ACC	1-aminocyclopropane-1-carboxilic acid
ALP	alkaline phosphatase
ALS	acetolactate synthase
BCAA	branched-chain amino acid
BCAT	branched-chain amino acid transaminase
BH4	tetrahydrobiopterin
CBS	cystathionine-β-synthase
DAP	deoxyxylose 5′-phosphate
DXP	deoxyxylose 5′-phosphate
ERE	ethylene-responsive elements
FMN	flavin mononucleotide
GAP	glyceraldehyde-3-phosphate
GLN	L-glutamine
GLU	L-glutamate
HKT	3-hydroxykynurenine transaminase
HTH	helix-turn-helix
MAT	methionine adenosyltransferase
MS	methionine synthase
MT	methyltransferase
MTHFR	methylenetetrahydrofolate reductase
NR	nitrate reductase
NUP1	NICOTINE UPTAKE PERMEASE 1
ODX	ornithine decarboxylase
P6C	1-piperideine-6-carboxylic acid
PDE	pyridoxine-dependent epilepsy
PDXA	Pyridoxine Biosynthesis Proteins A
PDXH	pyridoxine/pyridoxamine 5′-phosphate oxidase
PDXJ	pyridoxine 5′-phosphate synthase
PDXK	pyridoxal kinase
PHT	4-phosphohydroxy-L-threonine
PL	pyridoxal
PLK	pyridoxal kinase specific to PL
PLP	pyridoxal 5′-phosphate
PLR	pyridoxal reductase
PM	pyridoxamine
PMP	pyridoxamine 5′-phosphate
PN	pyridoxine
PNP	pyridoxine 5′-phosphate
PNPox	pyridoxine 5′-phosphate oxidase
PPL	pyridoxyllysine
PUP	purine permease
RDA	recommended dietary allowances
RIP	ribose-5-phosphate
ROS	reactive oxygen species
RUP	ribulose-5-phosphate
SAH	S-adenosylhomocysteine
SAHH	S-adenosylhomocysteine hydrolase
SAM	S-adenosylmethionine
SHMT	serine hydroxymethyltransferase
THF	tetrahydrofolate
UL	tolerable upper intake levels
vitB12	vitamin B12
vitB6	vitamin B6