title: The acetyl xylan esterase II gene from Penicillium purpurogenum is differentially expressed in several carbon sources, and tightly regulated by pH.
abstract: The expression of the acetyl xylan esterase II (axeII) gene from Penicillium purpurogenum is repressed by glucose and induced by xylan, as well as to a small degree by xylose and xylitol. This gene is expressed at neutral pH, but not under alkaline or acidic conditions, in agreement with previous findings for other xylanolytic genes of this organism. This is the first report showing pH regulation of an axe gene.
authors.affiliation: Laboratorio de Bioquímica, Departamento de Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile, Santiago, Chile.
authors.forename: Renato
authors.initials: R
authors.lastname: Chávez
authors.forename: Karen
authors.initials: K
authors.lastname: Schachter
authors.forename: Claudio
authors.initials: C
authors.lastname: Navarro
authors.forename: Alessandra
authors.initials: A
authors.lastname: Peirano
authors.forename: Paulina
authors.initials: P
authors.lastname: Bull
authors.forename: Jaime
authors.initials: J
authors.lastname: Eyzaguirre
mesh_terms: D000115:Acetylesterase / Q000235:genetics*; D001483:Base Sequence; D015966:Gene Expression Regulation, Fungal / Q000187:drug effects; D006863:Hydrogen-Ion Concentration; D008969:Molecular Sequence Data; D010407:Penicillium / Q000201:enzymology* / Q000235:genetics; D016133:Polymerase Chain Reaction; D011401:Promoter Regions, Genetic; D012331:RNA, Fungal; D014993:Xylitol / Q000494:pharmacology; D014994:Xylose / Q000494:pharmacology
chemical_list: D012331:RNA, Fungal; D014994:Xylose; D000115:Acetylesterase; C081851:acetylxylan esterase; D014993:Xylitol