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Journal of Bacteriology, December 1999, p. 7228-7234, Vol. 181, No. 23
Department of Molecular Microbiology,
Groningen Biomolecular Sciences and Biotechnology Institute, University
of Groningen, 9751 NN Haren, The
Netherlands,1 and Department of
Molecular Biology and Biotechnology, Krebs Institute for
Biomolecular Research, University of Sheffield, Sheffield S10 2TN,
United Kingdom2
Received 8 July 1999/Accepted 19 September 1999
In industrial fermentations, Penicillium chrysogenum
uses sulfate as the source of sulfur for the biosynthesis of
penicillin. By a PCR-based approach, two genes, sutA and
sutB, whose encoded products belong to the SulP superfamily
of sulfate permeases were isolated. Transformation of a sulfate
uptake-negative sB3 mutant of Aspergillus
nidulans with the sutB gene completely restored sulfate uptake activity. The sutA gene did not
complement the A. nidulans sB3 mutation, even when
expressed under control of the sutB promoter. Expression of
both sutA and sutB in P. chrysogenum is induced by growth under sulfur starvation
conditions. However, sutA is expressed to a much lower
level than is sutB. Disruption of sutB resulted
in a loss of sulfate uptake ability. Overall, the results show that
SutB is the major sulfate permease involved in sulfate uptake by
P. chrysogenum.
0021-9193/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Sulfate Transport in Penicillium
chrysogenum: Cloning and Characterization of the sutA
and sutB Genes

*
Corresponding author. Mailing address: Department of
Molecular Microbiology, Groningen Biomolecular Sciences and
Biotechnology Institute, University of Groningen, P.O. Box 14, 9750 AA
Haren, The Netherlands. Phone: 31-50-3632150. Fax: 31-50-3632154. E-mail: A.J.M.Driessen{at}BIOL.RUG.NL.
Present address: Synpac Pharmaceuticals, Cambois, Bedlington,
Northumberland NE2 7DB, United Kingdom.
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