Table 2.

Biological functions of B₆ vitamers.

B6 vitamer	function	reference
PLP and PMP	catalysis (enzyme cofactor)	[37]
PLP and PN	binding to steroid receptors, playing a role in membrane transport	[38–40]
all vitamers	reactive oxygen species scavenger and resistance factor to biotic and abiotic stress in plants and in Plasmodium falciparum	[41–44]
PLP	virulence factor in Helicobacter pylori, Mycobacterium tuberculosis and Actinobacillus pleuropneumoniae	[45–47]
PLP	chaperone in enzyme folding	[48]
PLP	modulator of transcription factors	[49,50]
PLP and PMP	inhibition of the formation of advanced glycation end products (AGEs)	[51–53]