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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
5
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pubmed:dateCreated |
1997-9-18
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pubmed:abstractText |
XerC and XerD are related 298-amino-acid site-specific recombinases, each of which is responsible for the exchange of one pair of strands in Xer recombination. Both recombinases encode functions necessary for sequence-specific DNA-binding, co-operative XerC/D interactions, synapsis and catalysis. These functions were related to the primary amino acid sequence by constructing and analysing internal and C-terminal XerD deletions. An XerD derivative containing residues 1-233 was proficient in specific DNA binding, but did not interact co-operatively with XerC. Deletion of a further five C-terminal amino acids abolished binding to DNA. Proteins deleted for residues 32-88 and for residues 145-159 were deficient in DNA binding. Deletion of residues 244-281, a region containing amino acids necessary for catalysis, gave a protein that bound to DNA. An XerD derivative containing residues 1-268 retained co-operative interactions with XerC; nevertheless, it did not support XerC strand exchange and was defective in XerD catalysis. Residues 1-283 retain a functional catalytic active site, though a protein lacking the five C-terminal amino acids was still unable to mediate normal in vivo recombination, indicating that these residues are needed for a function that is not directly related to DNA binding or catalysis.
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pubmed:grant | |
pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/DNA,
http://linkedlifedata.com/resource/pubmed/chemical/DNA Nucleotidyltransferases,
http://linkedlifedata.com/resource/pubmed/chemical/DNA Topoisomerases, Type I,
http://linkedlifedata.com/resource/pubmed/chemical/Escherichia coli Proteins,
http://linkedlifedata.com/resource/pubmed/chemical/Integrases,
http://linkedlifedata.com/resource/pubmed/chemical/Recombinases,
http://linkedlifedata.com/resource/pubmed/chemical/XerC protein, E coli,
http://linkedlifedata.com/resource/pubmed/chemical/XerD protein, E coli,
http://linkedlifedata.com/resource/pubmed/chemical/integron integrase IntI1
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pubmed:status |
MEDLINE
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pubmed:month |
Jun
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pubmed:issn |
0950-382X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
24
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1071-82
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pubmed:dateRevised |
2009-9-29
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pubmed:meshHeading |
pubmed-meshheading:9220013-Amino Acid Sequence,
pubmed-meshheading:9220013-DNA,
pubmed-meshheading:9220013-DNA Nucleotidyltransferases,
pubmed-meshheading:9220013-DNA Topoisomerases, Type I,
pubmed-meshheading:9220013-Escherichia coli,
pubmed-meshheading:9220013-Escherichia coli Proteins,
pubmed-meshheading:9220013-Integrases,
pubmed-meshheading:9220013-Molecular Sequence Data,
pubmed-meshheading:9220013-Plasmids,
pubmed-meshheading:9220013-Recombinases,
pubmed-meshheading:9220013-Recombination, Genetic,
pubmed-meshheading:9220013-Sequence Deletion,
pubmed-meshheading:9220013-Structure-Activity Relationship
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pubmed:year |
1997
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pubmed:articleTitle |
Relating primary structure to function in the Escherichia coli XerD site-specific recombinase.
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pubmed:affiliation |
Department of Biochemistry, University of Oxford, UK.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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