Wei sheng wu xue bao = Acta microbiologica Sinica · 2009
[Construct cosmid libraries by isolating large genomic DNA fragments from Monascus ruber].
Оценочное исследованиеСтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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An Yang, Yang Jing, Xu Xinxin, Liu Gang
Аннотация
OBJECTIVE: To isolate large genomic DNA fragments from Monascus ruber for the construction of cosmid libraries.
METHODS: Modified phenol-chloroform method was used to isolate genomic DNA. The isolated genomic DNA was digested by Sau3AI to 40kb fragments on average. Then, the fragments were packaged by Stratagene' s Gigapack III XL packaging extract. A pair of degenerate primers were used to amplify a fragment of PKS (polyketide synthase) gene from this cosmid library.
RESULTS: The average size of genomic DNA isolated by this method was larger than 48 kb, with a concentration of 5 microg/microl. The constructed cosmid libraries had 10 folders coverage of the Monascus spp. genome. A cosmid containing the homologue of PKS gene was obtained by PCR screening.
CONCLUSION: This modified method of isolating large fragments genomic DNA of Monascus ruber was efficient and feasible.
METHODS: Modified phenol-chloroform method was used to isolate genomic DNA. The isolated genomic DNA was digested by Sau3AI to 40kb fragments on average. Then, the fragments were packaged by Stratagene' s Gigapack III XL packaging extract. A pair of degenerate primers were used to amplify a fragment of PKS (polyketide synthase) gene from this cosmid library.
RESULTS: The average size of genomic DNA isolated by this method was larger than 48 kb, with a concentration of 5 microg/microl. The constructed cosmid libraries had 10 folders coverage of the Monascus spp. genome. A cosmid containing the homologue of PKS gene was obtained by PCR screening.
CONCLUSION: This modified method of isolating large fragments genomic DNA of Monascus ruber was efficient and feasible.