The acetyl xylan esterase II gene from Penicillium purpurogenum is differentially expressed in several carbon sources, and tightly regulated by pH.
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.
Chávez
Renato
R
Laboratorio de Bioquímica, Departamento de Genética Molecular y Microbiología, Pontificia Universidad Católica de Chile, Santiago, Chile.
Schachter
Karen
K
Navarro
Claudio
C
Peirano
Alessandra
A
Bull
Paulina
P
Eyzaguirre
Jaime
J
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
D012331:RNA, Fungal; D014994:Xylose; D000115:Acetylesterase; C081851:acetylxylan esterase; D014993:Xylitol