Title page for ETD etd-05042006-164528

Type of Document Dissertation
Author Lai, Kun-Nan
URN etd-05042006-164528
Title Cloning and expression of cambialistic Bacteroides fragilis superoxide dismutase gene
Degree PhD
Department Biochemistry and Nutrition
Advisory Committee
Advisor Name Title
Gregory, Eugene M. Committee Chair
Hess, John L. Committee Chair
Bevan, David R. Committee Member
Johnson, John L. Committee Member
Larson, Timothy J. Committee Member
  • Gene expression
  • Superoxide dismutase
  • Molecular cloning
Date of Defense 1992-09-15
Availability restricted

A gene coding for the cambialistic superoxide dismutase (SOD) was isolated from a LambdaGEM-ll genomic library of Bacteroides fragilis. In order to generate a complete genomic library, B. fragilis genomic DNA was partially digested with the restriction endonuclease Sau3AI and was ligated to cloning vector, LambdaGEM-ll. After in vitro packaging, DNA was used to infect E. coli KW 251. The genomic library was finally established in the plaque population. Recombinant phage DNAs containing the SOD gene were detected by a 32P-labelled synthetic oligonucleotide with 17 bases. The sequence of this oligonucleotide was deduced from the N-terminal amino acid sequence of B. fragilis FeSOD. Two recombinant phage DNAs were selected based on he results of plaque hybridization. Further analysis ith restriction mapping and DNA sequencing revealed that only one recombinant phage DNA contained the SOD gene.

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