Linked Life Data

15285619

Source:http://linkedlifedata.com/resource/pubmed/id/15285619

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2004-8-2
pubmed:abstractText
The protein environment of each nucleotide of the template codon located in the A site of the human ribosome was studied with UUCUCAA and UUUGUU derivatives containing a Phe codon (UUC and UUU, respectively) and a perfluoroarylazido group at U4, U5, or U6. The analogs were positioned in the ribosome with the use of tRNA(Phe), which is cognate to the UUC or UUU codon and directs it to the P site, bringing a modified codon in the A site with a modified nucleotide occupying position +4, +5, or +6 relative to the first nucleotide of the P-site codon. On irradiation of ribosome complexes with tRNA(Phe) and mRNA analogs with mild UV light, the analogs crosslinked predominantly to the 40S subunit, modifying the proteins to a greater extent than the rRNA. The 18S rRNA nucleotides crosslinking to the analogs were identified previously. Of the small-subunit proteins, S3 and S15 were the major targets of modification in all cases. The former was modified both in ternary complexes and in the absence of tRNA, and the latter, only in ternary complexes. The extent of crosslinking of mRNA analogs to S15 decreased when the modified nucleotide was shifted from position +4 to position +6. The results were collated with the data on ribosomal proteins located at the decoding site of the 70S ribosome, and conclusion was made that the protein environment of the A-site codon strikingly differs between bacterial and eukaryotic ribosomes.
pubmed:language
rus
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0026-8984
pubmed:author
pubmed:issnType
Print
pubmed:volume
38
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
493-500
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:articleTitle
[Protein environment of the sense codon of the template in the A site of the human ribosome as inferred from crosslinking to oligoribonucleotide derivatives].
pubmed:publicationType
Journal Article, English Abstract, Research Support, Non-U.S. Gov't