21558012
not annotated - annotated - LINNAEUS only
Mig1 is involved in mycelial formation and expression of the genes encoding extracellular enzymes in Saccharomycopsis fibuligera A11.
The MIG1 gene of Saccharomycopsis fibuligera A11 was cloned from its genomic DNA using the degenerated primers and inverse PCR. The MIG1 gene (1152bp, accession number: HM450676) encoded a 384-amino acid protein very similar to Mig1s from other fungi. Besides their highly conserved zinc fingers, the Mig1 proteins displayed short conserved motifs of possible significance in glucose repression. The MIG1 gene in S. fibuligera A11 was disrupted by integrating the HPT (hygromycin B phosphotransferase) gene into ORF (Open Reading Frame) of the MIG1 gene. The disruptant A11-c obtained could grow in the media containing hygromycin and 2-deoxy-d-glucose, respectively. alpha-Amylase, glucoamylse, acid protease and Beta-glucosidase production by the disruptant and expression of their genes in the disruptant were greatly enhanced. This confirms that Mig1, the transcriptional repressor, indeed regulates expression of the genes and production of the extracellular enzymes in S. fibuligera A11. At the same time, it was found that cell budding was enhanced and mycelial formation was reduced in the disruptant.
Ann file
T1 Species 101 132 Saccharomycopsis fibuligera A11
N1 Reference T1 Taxonomy:4944
T2 Species 153 184 Saccharomycopsis fibuligera A11
N2 Reference T2 Taxonomy:4944
T3 Species 549 566 S. fibuligera A11
N3 Reference T3 Taxonomy:4944
T4 Species 1111 1128 S. fibuligera A11
N4 Reference T4 Taxonomy:4944