Literature summary for 3.1.1.72 extracted from

Chavez, R.; Schachter, K.; Navarro, C.; Peirano, A.; Bull, P.; Eyzaguirre, J.
The acetyl xylan esterase II gene from Penicillium purpurogenum is differentially expressed in several carbon sources, and tightly regulated by pH (2004), Biol. Res., 37, 107-113.

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Activating Compound

Activating Compound	Comment	Organism	Structure
xylan	induces enzyme expression, gene axeII	Talaromyces purpureogenus
xylitol	slightly induces enzyme expression, gene axeII	Talaromyces purpureogenus
xylose	slightly induces enzyme expression, gene axeII	Talaromyces purpureogenus

Inhibitors

Inhibitors	Comment	Organism	Structure
glucose	represses enzyme expression, gene axeII	Talaromyces purpureogenus

Organism

Organism	UniProt	Comment	Textmining
Talaromyces purpureogenus	O59893	gene axeII	-

Reaction

Reaction	Comment	Organism	Reaction ID
acetylxylan + 3 H2O = 3 acetic acid + xylan	catalyses the hydrolysis of acetyl groups from polymeric xylan, acetylated xylose, acetylated glucose, alpha-naphthyl acetate, p-nitrophenyl acetate but not from triacetylglycerol. Does not act on acetylated mannan or pectin.	Talaromyces purpureogenus	a

Substrates and Products (Substrate)

Substrates	Comment Substrates	Organism	Products	Comment (Products)	Rev.	Reac.
acetylated xylan + H2O	-	Talaromyces purpureogenus	xylan + acetate	-	?

Synonyms

Synonyms	Comment	Organism
acetyl xylan esterase II	-	Talaromyces purpureogenus

pH Range

pH Minimum	pH Maximum	Comment	Organism
additional information	-	enzyme expression from gene axeII is strictly regulated by the pH value, axeII transcript appears only at neutral pH	Talaromyces purpureogenus

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Release 2023.1 (January 2023)