| pubmed-article:8995687 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:8995687 | lifeskim:mentions | umls-concept:C0035736 | lld:lifeskim |
| pubmed-article:8995687 | lifeskim:mentions | umls-concept:C1000323 | lld:lifeskim |
| pubmed-article:8995687 | lifeskim:mentions | umls-concept:C1074110 | lld:lifeskim |
| pubmed-article:8995687 | lifeskim:mentions | umls-concept:C0005528 | lld:lifeskim |
| pubmed-article:8995687 | lifeskim:mentions | umls-concept:C0030946 | lld:lifeskim |
| pubmed-article:8995687 | lifeskim:mentions | umls-concept:C0035681 | lld:lifeskim |
| pubmed-article:8995687 | lifeskim:mentions | umls-concept:C0542341 | lld:lifeskim |
| pubmed-article:8995687 | lifeskim:mentions | umls-concept:C0872079 | lld:lifeskim |
| pubmed-article:8995687 | pubmed:issue | 2 | lld:pubmed |
| pubmed-article:8995687 | pubmed:dateCreated | 1997-2-18 | lld:pubmed |
| pubmed-article:8995687 | pubmed:abstractText | The NIb protein of tobacco etch potyvirus (TEV) possesses several functions, including RNA-dependent RNA polymerase and nuclear translocation activities. Using a reporter protein fusion strategy, NIb was shown to contain two independent nuclear localization signals (NLS I and NLS II). NLS I was mapped to a sequence within amino acid residues 1 to 17, and NLS II was identified between residues 292 and 316. Clustered point mutations resulting in substitutions of basic residues within the NLSs were shown previously to disrupt nuclear translocation activity. These mutations also abolished TEV RNA amplification when introduced into the viral genome. The amplification defects caused by each NLS mutation were complemented in trans within transgenic cells expressing functional NIb, although the level of complementation detected for each mutant differed significantly. Combined with previous results (X. H. Li and J. C. Carrington, Proc. Natl. Acad. Sci. USA 92:457-461, 1995), these data suggest that the NLSs overlap with essential regions necessary for NIb trans-active function(s). The fact that NIb functions in trans implies that it must interact with one or more other components of the genome replication apparatus. A yeast two-hybrid system was used to investigate physical interactions between NIb and several other TEV replication proteins, including the multifunctional VPg/proteinase NIa and the RNA helicase CI. A specific interaction was detected between NIa and NIb. Deletion of any of five regions spanning the NIb sequence resulted in NIb variants that were unable to interact with NIa. Clustered point mutations affecting the conserved GDD motif or NLS II within the central region of NIb, but not mutations affecting NLS I near the N terminus, reduced or eliminated the interaction. The C-terminal proteinase (Pro) domain of NIa, but not the N-terminal VPg domain, interacted with NIb. The effects of NIb mutations within NLS I, NLS II, and the GDD motif on the interaction between the Pro domain and NIb were identical to the effects of these mutations on the interaction between full-length NIa and NIb. These data are compatible with a model in which NIb is directed to replication complexes through an interaction with the Pro domain of NIa. | lld:pubmed |
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| pubmed-article:8995687 | pubmed:language | eng | lld:pubmed |
| pubmed-article:8995687 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:8995687 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:8995687 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
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| pubmed-article:8995687 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:8995687 | pubmed:month | Feb | lld:pubmed |
| pubmed-article:8995687 | pubmed:issn | 0022-538X | lld:pubmed |
| pubmed-article:8995687 | pubmed:author | pubmed-author:CarringtonJ... | lld:pubmed |
| pubmed-article:8995687 | pubmed:author | pubmed-author:LiX HXH | lld:pubmed |
| pubmed-article:8995687 | pubmed:author | pubmed-author:ValdesYY | lld:pubmed |
| pubmed-article:8995687 | pubmed:author | pubmed-author:OlveraR ERE | lld:pubmed |
| pubmed-article:8995687 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:8995687 | pubmed:volume | 71 | lld:pubmed |
| pubmed-article:8995687 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:8995687 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:8995687 | pubmed:pagination | 1598-607 | lld:pubmed |
| pubmed-article:8995687 | pubmed:dateRevised | 2010-9-13 | lld:pubmed |
| pubmed-article:8995687 | pubmed:meshHeading | pubmed-meshheading:8995687-... | lld:pubmed |
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| pubmed-article:8995687 | pubmed:meshHeading | pubmed-meshheading:8995687-... | lld:pubmed |
| pubmed-article:8995687 | pubmed:year | 1997 | lld:pubmed |
