title: The cloning and sequencing of the UDP-galactose 4-epimerase gene (galE) from Avibacterium paragallinarum.
abstract: The putative uridine diphosphate (UDP)-galactose 4-epimerase encoding gene, galE, was isolated from Avibacterium paragallinarum with the use of degenerate primers, colony hybridization and inverse PCR. The data revealed an open reading frame of 1017 bp encoding a protein of 338 amino acids with a molecular weight of 37 kDa and an isoelectric point of 5.5. High sequence homology was obtained with an 87, 91 and 89% sequence identity on protein level towards the galE genes from Actinobacillus pleuropneumoniae, Haemophilus influenza and Pasteurella multocida, respectively. To verify that the cloned galE gene encodes for a UDP-galactose 4-epimeras, this gene was cloned into the pYES-2 expression vector, followed by transformation in a Saccharomyces cerevisiae gal10 deletion strain. Complementation of the gal10 deletion mutant with the galE gene confirmed that this gene encodes a UDP-galactose 4-epimerase.
authors.affiliation: Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, Bloemfontein, South Africa.
authors.forename: Yolande
authors.initials: Y
authors.lastname: Roodt
authors.forename: Robert
authors.initials: R
authors.lastname: Bragg
authors.forename: Jacobus
authors.initials: J
authors.lastname: Albertyn
mesh_terms: D000595:Amino Acid Sequence; D003001:Cloning, Molecular; D005816:Genetic Complementation Test; D008969:Molecular Sequence Data; D015661:Pasteurellaceae / Q000201:enzymology* / Q000235:genetics*; D012441:Saccharomyces cerevisiae; D017422:Sequence Analysis, DNA; D014534:UDPglucose 4-Epimerase / Q000235:genetics*
chemical_list: D014534:UDPglucose 4-Epimerase