Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: EC:6.5.1.2 (DNA ligase)
 2,749 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

3'-Deoxy-3'-chlorouridine has been chemically incorporated into two octanucleotides at various positions using in situ prepared phosphite chloridite intermediates. The behaviour of these modified selfcomplementary DNA fragments containing 2'-5' internucleotide bonds in the neighbourhood of 3'-deoxy-3'-chlororibose in respect to chemical sequencing, polynucleotide kinase and T4 DNA ligase has been studied.
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PMID:Chemical synthesis of octadeoxyribonucleotides containing sequence-specific 3'-deoxy-3'-chlorouridine residues and 2'-5' internucleotide linkages by the phosphite chloridite approach. 375 70

By a combination of chemical and enzymatic methods, a 75 base pair DNA duplex containing the sequence of the lambda PR promoter including the OR1 and OR2 cI repressor binding sites was synthesized. The solid support phosphite triester procedure (Caruthers, M. H. et al., Cold Spring Harbor Symposia on Quantitative Biology XLVII, in press) was used for the synthesis of oligonucleotides comprising the sequence. We report here an adaptation of the method of DNA synthesis in test tubes. Assembly of the oligonucleotides involved the use of T4 polynucleotide kinase and T4 DNA ligase. We show that the synthetic DNA is recognized by RNA polymerase and cI repressor in a manner identical to the same control region contained on a restriction fragment isolated from bacteriophage lambda DNA. Our synthetic approach using chemically synthesized promoter variants is thus suitable for studies probing the function of promoters.
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PMID:Chemical synthesis and biochemical reactivity of bacteriophage lambda PR promoter. 630 Jul 67