Construction of a biotin-overproducing strain of Serratia marcescens

We have isolated mutants resistant to acidomycin, a biotin analog, from Serratia marcescens Sr41. Strain SB304, resistant to 0.5 mg of acidomycin (frequently called actithiazic acid) per ml, produced 5 mg of D-biotin per liter of a medium containing sucrose and urea. Strain SB412, which was isolated...

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Veröffentlicht in:Applied and Environmental Microbiology 1993-09, Vol.59 (9), p.2857-2863
Hauptverfasser: Sakurai, N, Imai, Y, Masuda, M, Komatsubara, S, Tosa, T
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container_end_page 2863
container_issue 9
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container_title Applied and Environmental Microbiology
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creator Sakurai, N
Imai, Y
Masuda, M
Komatsubara, S
Tosa, T
description We have isolated mutants resistant to acidomycin, a biotin analog, from Serratia marcescens Sr41. Strain SB304, resistant to 0.5 mg of acidomycin (frequently called actithiazic acid) per ml, produced 5 mg of D-biotin per liter of a medium containing sucrose and urea. Strain SB412, which was isolated from SB304 on a minimal agar plate containing 2 mg of acidomycin per ml and 0.1 mg of 5-(2-thienyl)-valeric acid per ml, produced 20 Mg of D-biotin per ml. The two enzymes related to biotin synthesis were found to be released from biotin-mediated feedback repression in these mutants. Transductional analysis revealed that SB412 had acquired at least two mutations, one in the biotin operon locus and the other in an unknown locus distant from the biotin operon locus
doi_str_mv 10.1128/aem.59.9.2857-2863.1993
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Strain SB304, resistant to 0.5 mg of acidomycin (frequently called actithiazic acid) per ml, produced 5 mg of D-biotin per liter of a medium containing sucrose and urea. Strain SB412, which was isolated from SB304 on a minimal agar plate containing 2 mg of acidomycin per ml and 0.1 mg of 5-(2-thienyl)-valeric acid per ml, produced 20 Mg of D-biotin per ml. The two enzymes related to biotin synthesis were found to be released from biotin-mediated feedback repression in these mutants. 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source American Society for Microbiology; PubMed Central; Alma/SFX Local Collection
subjects Bacteria
Biochemistry
Biological and medical sciences
BIOSINTESIS
BIOSYNTHESE
Biotechnology
BIOTINA
BIOTINE
Fundamental and applied biological sciences. Psychology
Genetic technics
Methods. Procedures. Technologies
MUTACION
MUTANT
Mutant screening
MUTANTES
MUTATION
Physiology and Biotechnology
Prokaryotes
SERRATIA
Serratia marcescens
title Construction of a biotin-overproducing strain of Serratia marcescens
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