Abstract:
:Deoxynucleoside-5'-monophosphates (5'-dNMPs) are the basic components of DNA and are widely used in medicine and as chemical and biochemical reagents. A large amount of effort has been expended to obtain 5'-dNMPs of high quality and at a low cost. However, these procedures are inefficient and inconvenient. In this study, deoxyadenosine-5'-monophosphate (5'-dAMP), 2,6-diaminopurine deoxynucleoside-5'-monophosphate (5'-dDAMP), and deoxycytidine-5'-monophosphate (5'-dCMP) were biosynthesized using recombinant N-deoxyribosyltransferase II (NDT-II), deoxycytidine kinase, and acetate kinase in a one-pot reaction system. The ndt-II gene from Lactobacillus delbrueckii, dck from Bacillus subtilus, and ack from Escherichia coli K12 were overexpressed in E. coli BL21 (DE3). Thymidine was used as the deoxyribose donor; GTP was used as the phosphate donor, and acetyl phosphate was used to regenerate GTP. Under optimized conditions, each 10 mM adenine, 10 mM 2,6-diaminopurine, or 10 mM cytosine were converted into 9.01 mM 5'-dAMP, 8.68 mM 5'-dDAMP, or 6.23 mM 5'-dCMP, respectively. The high yield indicated that this process of biosynthesis of 5'-dAMP, 5'-dDAMP, or 5'-dCMP was efficient and economical, and this one-pot system may also potentially be used for the preparation of other types of 5'-dNMPs.
journal_name
Appl Microbiol Biotechnoljournal_title
Applied microbiology and biotechnologyauthors
Zou Z,Ding Q,Ou L,Yan Bdoi
10.1007/s00253-013-5173-6subject
Has Abstractpub_date
2013-11-01 00:00:00pages
9389-95issue
21eissn
0175-7598issn
1432-0614journal_volume
97pub_type
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