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. 1986 Jul 11;14(13):5531–5556. doi: 10.1093/nar/14.13.5531

Specific cleavage of kinetoplast minicircle DNA from Leishmania tarentolae by mung bean nuclease and identification of several additional minicircle sequence classes.

M L Muhich, L Simpson
PMCID: PMC311557  PMID: 3016649

Abstract

Multiple sequence classes of kinetoplast minicircle DNA from Leishmania tarentolae were cleaved by mung bean nuclease in the presence of formamide, yielding unit length linear molecules which retained the anomalous electrophoretic mobility in acrylamide characteristic of minicircle DNA. No specific cleavage site sequence common to all minicircle sequence classes was apparent, although the main region of nuclease cleavage was localized approximately 350 bp from the unique SmaI restriction site of the conserved region found in all minicircle sequence classes. Covalent closure of the minicircle substrate was not a requirement for cleavage, as linearized network-derived or cloned minicircles were also cleaved by mung bean nuclease at similar locations. The partial sequences of several new minicircle sequence classes released from the network by mung bean nuclease are also reported.

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Selected References

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