Abstract
A combined approach was used to derive a detailed physical map of Nicotiana tabacum chloroplast DNA for the restriction enzymes SalI, SmaI, KpnI, and BamHI. Complete maps for the restriction enzymes SalI, SmaI, and KpnI were derived by using two-dimensional agarose gel analysis of fragments obtained by reciprocal double digestion of chloroplast DNA. We have characterized a complete cloned library of N. tabacum chloroplast DNA which contains overlapping restriction fragments resulting from partial digestion by BamHI. With these clones and existing data, we used a novel computer-aided analysis to derive a detailed map for the enzyme BamHI. A comparison and compilation of all published N. tabacum chloroplast DNA restriction maps is presented. Differences between ours and a previously published SmaI and BamHI restriction map are discussed.
Published Version
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