View source for Present concept of XOR and the autoinducers

== Signal molecules ==

[[Image:QSsignals.gif|QSsignals.gif]]


'''Gram (-) bacteria use:'''

3-oxo-C6-HSL, N-(3-oxohexanoyl)-L-homoserine lactone, an AHL

DPD, the AI-2 precursor, 4,5 dihydroxy-2,3-pentanedione

HHQ, 2-heptyl-4(1H)-quinolone, an AQ

'''Gram (+) bacteria use:'''

DPD, the AI-2 precursor, 4,5 dihydroxy-2,3-pentanedione

A-Factor, 2-isocapryloyl-3-hydroxymethyl--butyrolactone

PQS, pseudomonas quinolone signal, 2-heptyl-3-hydroxy-4(1H)-quinolone

DSF, ‘diffusible factor’, cis-11-methyl-2-dodecenoic acid

3OH-PAME, hydroxyl-palmitic acid methyl ester; 

AIP-1, staphylococcal autoinducing peptide 1