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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제22권 제4호
- 발행연도
- 2012.1
- 수록면
- 555 - 562 (8page)
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PCR was performed to analyze the β-lactamase genes carried by ampicillin-resistant Vibrio spp. strains isolated from marine environments in Korea between 2006 and 2009. All 36 strains tested showed negative results in PCR with the primers designed from the nucleotide sequences of various known β-lactamase genes. This prompted us to screen new β-lactamase genes. A novel β-lactamase gene was cloned from Vibrio alginolyticus KV3 isolated from the aquaculture water of Geoje Island of Korea. The determined nucleotide sequence (VAK-3 β-lactamase)revealed an open reading frame (ORF) of 852 bp, encoding a protein of 283 amino acids (aa), which displayed low homology to any other β-lactamase genes reported in public databases. The deduced 283 aa sequence of VAK-3,consisting of a 19 aa signal peptide and a 264 aa mature protein, contained highly conserved peptide segments specific to class A β-lactamases including the specific amino acid residues STFK (62-65), SDN (122-124), E (158), and RTG (226-228). Results from PCR performed with primers specific to the VAK-3 β-lactamase gene identified 3 of the 36 isolated strains as V. alginolyticus,Vibrio cholerae, and Photobacterium damselae subsp.
damselae, indicating the utilization of various β-lactamase genes including unidentified ones in ampicillin-resistant Vibrio spp. strains from the marine environment. In a mating experiment, none of the isolates transfered the VAK-3 β-lactamase gene to the Escherichia coli recipient.
This lack of mobility, and the presence of a chromosomal acyl-CoA flanking sequence upstream of the VAK-3 β-lactamase gene, led to the assumption that the location of this new β-lactamase gene was in the chromosome, rather than the mobile plasmid. Antibiotic susceptibility of VAK-3β-lactamase was indicated by elevated levels of resistance to penicillins, but not to cephalosporins in the wild type and E. coli harboring recombinant plasmid pKV-3, compared with those of the host strain alone. Phylogenetic analysis showed that VAK-3 β-lactamase is a new and separate member of class A β-lactamases.
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참고문헌 (21)
참고문헌 신청
Ambler, R. P. / 1980 / The structure of β-lactamases / Philos. Trans. R. Soc. London Biol 289 : 321 ~ 331
Bert, F. / 2002 / Identification of PSE and OXA β-lactamase genes in Pseudomonas aeruginosa using PCR-restriction fragment length polymorphism / J. Antimicrob. Chemother 50
Bonnet, R. / 2000 / A novel CTX-M β- lactamase (CTX-M-8) in cefotaxime-resistant Enterobacteriaceae isolated in Brazil / Antimicrob. Agents Chemother 44 : 1936 ~ 1942
Choury, D. / 2000 / Nucleotide sequence of the bla(RTG-2) (CARB-5) gene and phylogeny of a new group of carbenicillinases / Antimicrob. Agents Chemother 44 : 1070 ~ 1074
Daniele, C. / 1999 / Characterization and nucleotide sequence of CARB-6, a new carbenicillin-hydrolyzing β-lactamase from Vibrio cholera / Antimicrob. Agents Chemother 43 :
Bert, F. / 2002 / Identification of PSE and OXA β-lactamase genes in Pseudomonas aeruginosa using PCR-restriction fragment length polymorphism / J. Antimicrob. Chemother 50
Bonnet, R. / 2000 / A novel CTX-M β- lactamase (CTX-M-8) in cefotaxime-resistant Enterobacteriaceae isolated in Brazil / Antimicrob. Agents Chemother 44 : 1936 ~ 1942
Choury, D. / 2000 / Nucleotide sequence of the bla(RTG-2) (CARB-5) gene and phylogeny of a new group of carbenicillinases / Antimicrob. Agents Chemother 44 : 1070 ~ 1074
Daniele, C. / 1999 / Characterization and nucleotide sequence of CARB-6, a new carbenicillin-hydrolyzing β-lactamase from Vibrio cholera / Antimicrob. Agents Chemother 43 :
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