Literature summary for 4.4.1.4 extracted from

Kubec, R.; Krejcova, P.; Simek, P.; Vaclavik, L.; Hajslova, J.; Schraml, J.
Precursors and formation of pyrithione and other pyridyl-containing sulfur compounds in drumstick onion, Allium stipitatum (2011), J. Agric. Food Chem., 59, 5763-5770.

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Natural Substrates/ Products (Substrates)

Natural Substrates	Organism	Comment (Nat. Sub.)	Natural Products	Comment (Nat. Pro.)	Rev.	Reac.
(R)-S-(2-pyridyl)cysteine N-oxide	Allium stipitatum	-	2-sulfanylpyridine N-oxide + 2-aminoacrylate	2-sulfanylpyridine N-oxide can spontaneously rearrange into tautomeric and more stable N-hydroxypyridine-(1H)-thione, which can be transformed to 2-(methyldithio)pyridine N-oxide, 2-[(methylthio)methyldithio]pyridine N-oxide, di(2-pyridyl) disulfide N-oxide, and di(2-pyridyl) disulfide N,N'-dioxide	?
methiin	Allium stipitatum	-	methanesulfenic acid + 2-aminoacrylate	-	?
S-(methylthiomethyl)cysteine 4-oxide	Allium stipitatum	i.e. marasmin	(methylthio)methane-sulfenic acid + 2-aminoacrylate	-	?

Organism

Organism	UniProt	Comment	Textmining
Allium stipitatum	-	-	-

Source Tissue

Source Tissue	Comment	Organism	Textmining
bulb	-	Allium stipitatum	-

Substrates and Products (Substrate)

Substrates	Comment Substrates	Organism	Products	Comment (Products)	Rev.	Reac.
(R)-S-(2-pyridyl)cysteine N-oxide	-	Allium stipitatum	2-sulfanylpyridine N-oxide + 2-aminoacrylate	2-sulfanylpyridine N-oxide can spontaneously rearrange into tautomeric and more stable N-hydroxypyridine-(1H)-thione, which can be transformed to 2-(methyldithio)pyridine N-oxide, 2-[(methylthio)methyldithio]pyridine N-oxide, di(2-pyridyl) disulfide N-oxide, and di(2-pyridyl) disulfide N,N'-dioxide	?
methiin	-	Allium stipitatum	methanesulfenic acid + 2-aminoacrylate	-	?
S-(methylthiomethyl)cysteine 4-oxide	i.e. marasmin	Allium stipitatum	(methylthio)methane-sulfenic acid + 2-aminoacrylate	-	?

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Release 2023.1 (January 2023)