Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2007-4-30
pubmed:abstractText
Binding of the next complementary dNTP by the binary complex containing HIV-1 reverse transcriptase (RT) and primer-template induces conformational changes that have been implicated in catalytic function of RT. We have used DNase I footprinting, gel electrophoretic mobility shift, and exonuclease protection assays to characterize the interactions between HIV-1 RT and chain-terminated primer-template in the absence and presence of various ligands. Distinguishable stable complexes were formed in the presence of foscarnet (an analog of pyrophosphate), the dNTP complementary to the first (+1) templating nucleotide or the dNTP complementary to the second (+2) templating nucleotide. The position of HIV-1 RT on the primer-template in each of these complexes is different. RT is located upstream in the foscarnet complex, relative to the +1 complex, and downstream in the +2 complex. These results suggest that HIV-1 RT can translocate along the primer-template in the absence of phosphodiester bond formation. The ability to form a specific foscarnet complex might explain the inhibitory properties of this compound. The ability to recognize the second templating nucleotide has implications for nucleotide misincorporation.
pubmed:grant
pubmed:commentsCorrections
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pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0022-2836
pubmed:author
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