int-h: an int mutation of phage [lambda] that enhances site-specific recombination
dc.contributor.author | Miller, Harvey I. | en_US |
dc.contributor.author | Mozola, Mark A. | en_US |
dc.contributor.author | Friedman, David I. | en_US |
dc.date.accessioned | 2006-04-07T17:23:43Z | |
dc.date.available | 2006-04-07T17:23:43Z | |
dc.date.issued | 1980-07 | en_US |
dc.identifier.citation | Miller, Harvey I., Mozola, Mark A., Friedman, David I. (1980/07)."int-h: an int mutation of phage [lambda] that enhances site-specific recombination." Cell 20(3): 721-729. <http://hdl.handle.net/2027.42/23213> | en_US |
dc.identifier.uri | http://www.sciencedirect.com/science/article/B6WSN-4C8G0KB-3M/2/15dfacb1db79d53b49a406723a4aa10b | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/23213 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=6448091&dopt=citation | en_US |
dc.description.abstract | The mutation int-h3 maps in the int gene of coliphage [lambda] and results in the synthesis of an integrase with enhanced activity, which is manifested by an ability to support [lambda] site-specific recombination relatively efficiently under conditions where the wild-type integrase functions inefficiently. The level of site-specific recombination seen in the presence of the int+ integrase in himA- hosts is greatly reduced, as measured by lysogen formation, intramolecular site-specific integration and excision, and excision of a cryptic [lambda] prophage. In contrast, the int-h3 integrase shows relatively high levels of activities under these conditions. Int-h3 is also more active in other host mutants (himB and hip) that reduce [lambda] site-specific recombination. In the absence of the normal attB site, the frequency of lysogen formation (at secondary sites) by [lambda] int+ is reduced 200 fold. Although [lambda] int-h3 will integrate preferentially at the attB site if it is present, the mutant phage forms lysogens at a high frequency in attB-deleted hosts. [lambda] int-h3 requires himA function for integration at secondary sites. The fact that the int-h3 integrase uses the same att sites as well as the same host functions as the int+ integrase suggests that the mutation results in a quantitative rather than a qualitative change in integrase activity; that is, the int-h3 integrase is more active. The mutant integrase supports site-specific recombination with att sites that carry the att24 mutation. We propose that the int-h3 integrase is endowed with an enhanced ability to recognize att sequences, including some that are not effectively recognized by wild-type integrase. | en_US |
dc.format.extent | 1026565 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Elsevier | en_US |
dc.title | int-h: an int mutation of phage [lambda] that enhances site-specific recombination | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Molecular, Cellular and Developmental Biology | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Microbiology and Immunology University of Michigan, Ann Arbor, Michigan 48109, USA; Department of Molecular Biology, University of California, Berkeley, California 94720. | en_US |
dc.contributor.affiliationum | Department of Microbiology and Immunology University of Michigan, Ann Arbor, Michigan 48109, USA | en_US |
dc.contributor.affiliationum | Department of Microbiology and Immunology University of Michigan, Ann Arbor, Michigan 48109, USA | en_US |
dc.identifier.pmid | 6448091 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/23213/1/0000142.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1016/0092-8674(80)90318-9 | en_US |
dc.identifier.source | Cell | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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