Linked Life Data

1847365

Source:http://linkedlifedata.com/resource/pubmed/id/1847365

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1991-3-26
pubmed:abstractText
The nusA11 mutation causes reduced transcription termination and temperature-sensitive growth of Escherichia coli. Suppressor mutations that restored growth of nusA11 mutant cells were isolated and named sna mutations. The intergenic suppressor mutation sna-10 was located in the rpoC gene at 90 min, which encodes the beta' subunit of RNA polymerase. sna-10 complemented the defect in tR1 termination caused by nusA11 and by itself stimulated termination of transcription at the lambda tR1 terminator. sna-10 is specific to the nusA11 allele and unable to suppress cold-sensitive growth of the nusA10 mutant. nusA10 carried two base substitutions at positions 311 and 634, causing two amino acid changes from the wild-type sequence. During these studies, we found three -1 frameshift errors in the wild-type nusA sequence; the correct sequence was confirmed by the peptide sequence and gene fusion analyses. The revised sequence revealed that nusA1 and nusA11 are located in an arginine-rich peptide region and substitute arginine and aspartate for leucine 183 and glycine 181, respectively. The intragenic suppressor study indicated that the nusA11 mutation can be suppressed by changing the mutated aspartate 181 to alanine or changing aspartate 84 to tyrosine.
pubmed:commentsCorrections
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pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0021-9193
pubmed:author
pubmed:issnType
Print
pubmed:volume
173
pubmed:geneSymbol
nusA1, nusA10, nusA11, rpoB, rpoC, sna-10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1492-501
pubmed:dateRevised
2009-11-18
pubmed:meshHeading
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